[libc++] Use ASSERT_SAME_TYPE instead of <type_traits> in depr tests

[ldionne]

Summary

Whenever, possible, use ASSERT_SAME_TYPE instead of static_assert along
with std::is_same in the depr header tests. This prevents dragging in
multiple headers unrelated to the header being tested, which can (and
has) hidden issues.

Also, add a couple of tests to ensure that basic declarations in
<stddef.h> and <stdint.h> are available when including just those
headers, since the rest of the tests for those types require pulling
in additional dependencies.

libcxx/test/std/depr/depr.c.headers/ctype_h.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // <ctype.h>
 
 #include <ctype.h>
-#include <type_traits>
-#include <cassert>
+
+#include "test_macros.h"
 
 #ifdef isalnum
 #error isalnum defined
 #endif
 
 #ifdef isalpha
 #error isalpha defined
 #endif

 #ifdef tolower
 #error tolower defined
 #endif
 
 #ifdef toupper
 #error toupper defined
 #endif
 
-int main(int, char**) {
-  static_assert(std::is_same<decltype(isalnum(0)), int>::value, "");
-  static_assert(std::is_same<decltype(isalpha(0)), int>::value, "");
-  static_assert(std::is_same<decltype(isblank(0)), int>::value, "");
-  static_assert(std::is_same<decltype(iscntrl(0)), int>::value, "");
-  static_assert(std::is_same<decltype(isdigit(0)), int>::value, "");
-  static_assert(std::is_same<decltype(isgraph(0)), int>::value, "");
-  static_assert(std::is_same<decltype(islower(0)), int>::value, "");
-  static_assert(std::is_same<decltype(isprint(0)), int>::value, "");
-  static_assert(std::is_same<decltype(ispunct(0)), int>::value, "");
-  static_assert(std::is_same<decltype(isspace(0)), int>::value, "");
-  static_assert(std::is_same<decltype(isupper(0)), int>::value, "");
-  static_assert(std::is_same<decltype(isxdigit(0)), int>::value, "");
-  static_assert(std::is_same<decltype(tolower(0)), int>::value, "");
-  static_assert(std::is_same<decltype(toupper(0)), int>::value, "");
+ASSERT_SAME_TYPE(int, decltype(isalnum(0)));
+ASSERT_SAME_TYPE(int, decltype(isalpha(0)));
+ASSERT_SAME_TYPE(int, decltype(isblank(0)));
+ASSERT_SAME_TYPE(int, decltype(iscntrl(0)));
+ASSERT_SAME_TYPE(int, decltype(isdigit(0)));
+ASSERT_SAME_TYPE(int, decltype(isgraph(0)));
+ASSERT_SAME_TYPE(int, decltype(islower(0)));
+ASSERT_SAME_TYPE(int, decltype(isprint(0)));
+ASSERT_SAME_TYPE(int, decltype(ispunct(0)));
+ASSERT_SAME_TYPE(int, decltype(isspace(0)));
+ASSERT_SAME_TYPE(int, decltype(isupper(0)));
+ASSERT_SAME_TYPE(int, decltype(isxdigit(0)));
+ASSERT_SAME_TYPE(int, decltype(tolower(0)));
+ASSERT_SAME_TYPE(int, decltype(toupper(0)));
 
+#include <cassert>
+
+int main(int, char**) {
   assert(isalnum('a'));
   assert(isalpha('a'));
   assert(isblank(' '));
   assert(!iscntrl(' '));
   assert(!isdigit('a'));
   assert(isgraph('a'));
   assert(islower('a'));
   assert(isprint('a'));

libcxx/test/std/depr/depr.c.headers/fenv_h.compile.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // <fenv.h>
 
 #include <fenv.h>
-#include <type_traits>
+
+#include "test_macros.h"
 
 #ifndef FE_DIVBYZERO
 #error FE_DIVBYZERO not defined
 #endif
 
 #ifndef FE_INEXACT
 #error FE_INEXACT not defined
 #endif

 #endif
 
 #ifndef FE_DFL_ENV
 #error FE_DFL_ENV not defined
 #endif
 
 fenv_t fenv = {};
 fexcept_t fex = 0;
-static_assert(std::is_same<decltype(::feclearexcept(0)), int>::value, "");
-static_assert(std::is_same<decltype(::fegetexceptflag(&fex, 0)), int>::value, "");
-static_assert(std::is_same<decltype(::feraiseexcept(0)), int>::value, "");
-static_assert(std::is_same<decltype(::fesetexceptflag(&fex, 0)), int>::value, "");
-static_assert(std::is_same<decltype(::fetestexcept(0)), int>::value, "");
-static_assert(std::is_same<decltype(::fegetround()), int>::value, "");
-static_assert(std::is_same<decltype(::fesetround(0)), int>::value, "");
-static_assert(std::is_same<decltype(::fegetenv(&fenv)), int>::value, "");
-static_assert(std::is_same<decltype(::feholdexcept(&fenv)), int>::value, "");
-static_assert(std::is_same<decltype(::fesetenv(&fenv)), int>::value, "");
-static_assert(std::is_same<decltype(::feupdateenv(&fenv)), int>::value, "");
+ASSERT_SAME_TYPE(int, decltype(::feclearexcept(0)));
+ASSERT_SAME_TYPE(int, decltype(::fegetexceptflag(&fex, 0)));
+ASSERT_SAME_TYPE(int, decltype(::feraiseexcept(0)));
+ASSERT_SAME_TYPE(int, decltype(::fesetexceptflag(&fex, 0)));
+ASSERT_SAME_TYPE(int, decltype(::fetestexcept(0)));
+ASSERT_SAME_TYPE(int, decltype(::fegetround()));
+ASSERT_SAME_TYPE(int, decltype(::fesetround(0)));
+ASSERT_SAME_TYPE(int, decltype(::fegetenv(&fenv)));
+ASSERT_SAME_TYPE(int, decltype(::feholdexcept(&fenv)));
+ASSERT_SAME_TYPE(int, decltype(::fesetenv(&fenv)));
+ASSERT_SAME_TYPE(int, decltype(::feupdateenv(&fenv)));

libcxx/test/std/depr/depr.c.headers/inttypes_h.compile.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // test <inttypes.h>
 
 #include <inttypes.h>
-#include <type_traits>
 
 #include "test_macros.h"
 
 #ifndef INT8_MIN
 #error INT8_MIN not defined
 #endif
 
 #ifndef INT16_MIN

 #ifndef SCNxMAX
 #error SCNxMAX not defined
 #endif
 
 #ifndef SCNxPTR
 #error SCNxPTR not defined
 #endif
 
-template <class T>
-void test() {
-    T t = 0;
-    ((void)t); // Prevent unused warning
-}
-
-int main(int, char**) {
-    test<int8_t >();
-    test<int16_t>();
-    test<int32_t>();
-    test<int64_t>();
-
-    test<uint8_t >();
-    test<uint16_t>();
-    test<uint32_t>();
-    test<uint64_t>();
-
-    test<int_least8_t >();
-    test<int_least16_t>();
-    test<int_least32_t>();
-    test<int_least64_t>();
-
-    test<uint_least8_t >();
-    test<uint_least16_t>();
-    test<uint_least32_t>();
-    test<uint_least64_t>();
-
-    test<int_fast8_t >();
-    test<int_fast16_t>();
-    test<int_fast32_t>();
-    test<int_fast64_t>();
-
-    test<uint_fast8_t >();
-    test<uint_fast16_t>();
-    test<uint_fast32_t>();
-    test<uint_fast64_t>();
-
-    test<intptr_t >();
-    test<uintptr_t>();
-    test<intmax_t >();
-    test<uintmax_t>();
-
-    {
-        imaxdiv_t  i1 = {};
-        ((void)i1); // Prevent unused warning
-    }
-
-    intmax_t i = 0;
-    ((void)i); // Prevent unused warning
-    static_assert((std::is_same<decltype(imaxabs(i)), intmax_t>::value), "");
-    static_assert((std::is_same<decltype(imaxdiv(i, i)), imaxdiv_t>::value), "");
-    static_assert((std::is_same<decltype(strtoimax("", (char**)0, 0)), intmax_t>::value), "");
-    static_assert((std::is_same<decltype(strtoumax("", (char**)0, 0)), uintmax_t>::value), "");
+void f() {
+    { int8_t x = 0; (void)x; }
+    { int16_t x = 0; (void)x; }
+    { int32_t x = 0; (void)x; }
+    { int64_t x = 0; (void)x; }
+
+    { uint8_t x = 0; (void)x; }
+    { uint16_t x = 0; (void)x; }
+    { uint32_t x = 0; (void)x; }
+    { uint64_t x = 0; (void)x; }
+
+    { int_least8_t x = 0; (void)x; }
+    { int_least16_t x = 0; (void)x; }
+    { int_least32_t x = 0; (void)x; }
+    { int_least64_t x = 0; (void)x; }
+
+    { uint_least8_t x = 0; (void)x; }
+    { uint_least16_t x = 0; (void)x; }
+    { uint_least32_t x = 0; (void)x; }
+    { uint_least64_t x = 0; (void)x; }
+
+    { int_fast8_t x = 0; (void)x; }
+    { int_fast16_t x = 0; (void)x; }
+    { int_fast32_t x = 0; (void)x; }
+    { int_fast64_t x = 0; (void)x; }
+
+    { uint_fast8_t x = 0; (void)x; }
+    { uint_fast16_t x = 0; (void)x; }
+    { uint_fast32_t x = 0; (void)x; }
+    { uint_fast64_t x = 0; (void)x; }
+
+    { intptr_t x = 0; (void)x; }
+    { uintptr_t x = 0; (void)x; }
+    { intmax_t x = 0; (void)x; }
+    { uintmax_t x = 0; (void)x; }
+
+    { imaxdiv_t x = {}; (void)x; }
+
+    intmax_t i = 0; (void)i;
+    ASSERT_SAME_TYPE(intmax_t,  decltype(imaxabs(i)));
+    ASSERT_SAME_TYPE(imaxdiv_t, decltype(imaxdiv(i, i)));
+    ASSERT_SAME_TYPE(intmax_t,  decltype(strtoimax("", (char**)0, 0)));
+    ASSERT_SAME_TYPE(uintmax_t, decltype(strtoumax("", (char**)0, 0)));
 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
-    static_assert((std::is_same<decltype(wcstoimax(L"", (wchar_t**)0, 0)), intmax_t>::value), "");
-    static_assert((std::is_same<decltype(wcstoumax(L"", (wchar_t**)0, 0)), uintmax_t>::value), "");
+    ASSERT_SAME_TYPE(intmax_t,  decltype(wcstoimax(L"", (wchar_t**)0, 0)));
+    ASSERT_SAME_TYPE(uintmax_t, decltype(wcstoumax(L"", (wchar_t**)0, 0)));
 #endif
-
-    return 0;
 }

libcxx/test/std/depr/depr.c.headers/locale_h.compile.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // UNSUPPORTED: no-localization
 
 // <locale.h>
 
 #include <locale.h>
-#include <type_traits>
+
+#include "test_macros.h"
 
 #ifndef LC_ALL
 #error LC_ALL not defined
 #endif
 
 #ifndef LC_COLLATE
 #error LC_COLLATE not defined
 #endif

 #error LC_TIME not defined
 #endif
 
 #ifndef NULL
 #error NULL not defined
 #endif
 
 lconv lc;
-static_assert((std::is_same<decltype(setlocale(0, "")), char*>::value), "");
-static_assert((std::is_same<decltype(localeconv()), lconv*>::value), "");
+ASSERT_SAME_TYPE(char*,  decltype(setlocale(0, "")));
+ASSERT_SAME_TYPE(lconv*, decltype(localeconv()));

libcxx/test/std/depr/depr.c.headers/math_h.pass.cpp

 template <class T, class = decltype(::abs(std::declval<T>()))>
 std::true_type has_abs_imp(int);
 template <class T>
 std::false_type has_abs_imp(...);
 
 template <class T>
 struct has_abs : decltype(has_abs_imp<T>(0)) {};
 
-void test_abs()
-{
+void test_abs() {
   TEST_DIAGNOSTIC_PUSH
   TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value")
 
-  static_assert((std::is_same<decltype(abs((float)0)), float>::value), "");
-  static_assert((std::is_same<decltype(abs((double)0)), double>::value), "");
-  static_assert(
-      (std::is_same<decltype(abs((long double)0)), long double>::value), "");
-  static_assert((std::is_same<decltype(abs((int)0)), int>::value), "");
-  static_assert((std::is_same<decltype(abs((long)0)), long>::value), "");
-  static_assert((std::is_same<decltype(abs((long long)0)), long long>::value),
-                "");
-  static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value),
-                "");
-  static_assert((std::is_same<decltype(abs((unsigned short)0)), int>::value),
-                "");
-
-  static_assert((std::is_same<decltype(abs(Ambiguous())), Ambiguous>::value),
-                "");
+  ASSERT_SAME_TYPE(decltype(abs((float)0)), float);
+  ASSERT_SAME_TYPE(decltype(abs((double)0)), double);
+  ASSERT_SAME_TYPE(decltype(abs((long double)0)), long double);
+  ASSERT_SAME_TYPE(decltype(abs((int)0)), int);
+  ASSERT_SAME_TYPE(decltype(abs((long)0)), long);
+  ASSERT_SAME_TYPE(decltype(abs((long long)0)), long long);
+  ASSERT_SAME_TYPE(decltype(abs((unsigned char)0)), int);
+  ASSERT_SAME_TYPE(decltype(abs((unsigned short)0)), int);
+  ASSERT_SAME_TYPE(decltype(abs(Ambiguous())), Ambiguous);
 
   static_assert(!has_abs<unsigned>::value, "");
   static_assert(!has_abs<unsigned long>::value, "");
   static_assert(!has_abs<unsigned long long>::value, "");
 
   TEST_DIAGNOSTIC_POP
 
   assert(abs(-1.) == 1);
 }
 
-void test_acos()
-{
-    static_assert((std::is_same<decltype(acosf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(acosl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(acos(Ambiguous())), Ambiguous>::value), "");
+void test_acos() {
+    ASSERT_SAME_TYPE(decltype(acosf(0)), float);
+    ASSERT_SAME_TYPE(decltype(acosl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(acos(Ambiguous())), Ambiguous);
     assert(acos(1) == 0);
 }
 
-void test_asin()
-{
-    static_assert((std::is_same<decltype(asinf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(asinl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(asin(Ambiguous())), Ambiguous>::value), "");
+void test_asin() {
+    ASSERT_SAME_TYPE(decltype(asinf(0)), float);
+    ASSERT_SAME_TYPE(decltype(asinl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(asin(Ambiguous())), Ambiguous);
     assert(asin(0) == 0);
 }
 
-void test_atan()
-{
-    static_assert((std::is_same<decltype(atanf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(atanl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(atan(Ambiguous())), Ambiguous>::value), "");
+void test_atan() {
+    ASSERT_SAME_TYPE(decltype(atanf(0)), float);
+    ASSERT_SAME_TYPE(decltype(atanl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(atan(Ambiguous())), Ambiguous);
     assert(atan(0) == 0);
 }
 
-void test_atan2()
-{
-    static_assert((std::is_same<decltype(atan2f(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(atan2l(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(atan2(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_atan2() {
+    ASSERT_SAME_TYPE(decltype(atan2f(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(atan2l(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(atan2(Ambiguous(), Ambiguous())), Ambiguous);
     assert(atan2(0,1) == 0);
 }
 
-void test_ceil()
-{
-    static_assert((std::is_same<decltype(ceilf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(ceill(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(ceil(Ambiguous())), Ambiguous>::value), "");
+void test_ceil() {
+    ASSERT_SAME_TYPE(decltype(ceilf(0)), float);
+    ASSERT_SAME_TYPE(decltype(ceill(0)), long double);
+    ASSERT_SAME_TYPE(decltype(ceil(Ambiguous())), Ambiguous);
     assert(ceil(0) == 0);
 }
 
-void test_cos()
-{
-    static_assert((std::is_same<decltype(cosf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(cosl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(cos(Ambiguous())), Ambiguous>::value), "");
+void test_cos() {
+    ASSERT_SAME_TYPE(decltype(cosf(0)), float);
+    ASSERT_SAME_TYPE(decltype(cosl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(cos(Ambiguous())), Ambiguous);
     assert(cos(0) == 1);
 }
 
-void test_cosh()
-{
-    static_assert((std::is_same<decltype(coshf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(coshl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(cosh(Ambiguous())), Ambiguous>::value), "");
+void test_cosh() {
+    ASSERT_SAME_TYPE(decltype(coshf(0)), float);
+    ASSERT_SAME_TYPE(decltype(coshl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(cosh(Ambiguous())), Ambiguous);
     assert(cosh(0) == 1);
 }
 
-void test_exp()
-{
-    static_assert((std::is_same<decltype(expf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(expl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(exp(Ambiguous())), Ambiguous>::value), "");
+void test_exp() {
+    ASSERT_SAME_TYPE(decltype(expf(0)), float);
+    ASSERT_SAME_TYPE(decltype(expl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(exp(Ambiguous())), Ambiguous);
     assert(exp(0) == 1);
 }
 
-void test_fabs()
-{
-    static_assert((std::is_same<decltype(fabsf(0.0f)), float>::value), "");
-    static_assert((std::is_same<decltype(fabsl(0.0L)), long double>::value), "");
-    static_assert((std::is_same<decltype(fabs(Ambiguous())), Ambiguous>::value), "");
+void test_fabs() {
+    ASSERT_SAME_TYPE(decltype(fabsf(0.0f)), float);
+    ASSERT_SAME_TYPE(decltype(fabsl(0.0L)), long double);
+    ASSERT_SAME_TYPE(decltype(fabs(Ambiguous())), Ambiguous);
     assert(fabs(-1) == 1);
 }
 
-void test_floor()
-{
-    static_assert((std::is_same<decltype(floorf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(floorl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(floor(Ambiguous())), Ambiguous>::value), "");
+void test_floor() {
+    ASSERT_SAME_TYPE(decltype(floorf(0)), float);
+    ASSERT_SAME_TYPE(decltype(floorl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(floor(Ambiguous())), Ambiguous);
     assert(floor(1) == 1);
 }
 
-void test_fmod()
-{
-    static_assert((std::is_same<decltype(fmodf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(fmodl(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fmod(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_fmod() {
+    ASSERT_SAME_TYPE(decltype(fmodf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(fmodl(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(fmod(Ambiguous(), Ambiguous())), Ambiguous);
     assert(fmod(1.5,1) == .5);
 }
 
-void test_frexp()
-{
+void test_frexp() {
     int ip;
-    static_assert((std::is_same<decltype(frexpf(0, &ip)), float>::value), "");
-    static_assert((std::is_same<decltype(frexpl(0, &ip)), long double>::value), "");
-    static_assert((std::is_same<decltype(frexp(Ambiguous(), &ip)), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(frexpf(0, &ip)), float);
+    ASSERT_SAME_TYPE(decltype(frexpl(0, &ip)), long double);
+    ASSERT_SAME_TYPE(decltype(frexp(Ambiguous(), &ip)), Ambiguous);
     assert(frexp(0, &ip) == 0);
 }
 
-void test_ldexp()
-{
+void test_ldexp() {
     int ip = 1;
-    static_assert((std::is_same<decltype(ldexpf(0, ip)), float>::value), "");
-    static_assert((std::is_same<decltype(ldexpl(0, ip)), long double>::value), "");
-    static_assert((std::is_same<decltype(ldexp(Ambiguous(), ip)), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(ldexpf(0, ip)), float);
+    ASSERT_SAME_TYPE(decltype(ldexpl(0, ip)), long double);
+    ASSERT_SAME_TYPE(decltype(ldexp(Ambiguous(), ip)), Ambiguous);
     assert(ldexp(1, ip) == 2);
 }
 
-void test_log()
-{
-    static_assert((std::is_same<decltype(logf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(logl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(log(Ambiguous())), Ambiguous>::value), "");
+void test_log() {
+    ASSERT_SAME_TYPE(decltype(logf(0)), float);
+    ASSERT_SAME_TYPE(decltype(logl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(log(Ambiguous())), Ambiguous);
     assert(log(1) == 0);
 }
 
-void test_log10()
-{
-    static_assert((std::is_same<decltype(log10f(0)), float>::value), "");
-    static_assert((std::is_same<decltype(log10l(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(log10(Ambiguous())), Ambiguous>::value), "");
+void test_log10() {
+    ASSERT_SAME_TYPE(decltype(log10f(0)), float);
+    ASSERT_SAME_TYPE(decltype(log10l(0)), long double);
+    ASSERT_SAME_TYPE(decltype(log10(Ambiguous())), Ambiguous);
     assert(log10(1) == 0);
 }
 
-void test_modf()
-{
-    static_assert((std::is_same<decltype(modf((float)0, (float*)0)), float>::value), "");
-    static_assert((std::is_same<decltype(modf((double)0, (double*)0)), double>::value), "");
-    static_assert((std::is_same<decltype(modf((long double)0, (long double*)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(modff(0, (float*)0)), float>::value), "");
-    static_assert((std::is_same<decltype(modfl(0, (long double*)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(modf(Ambiguous(), (Ambiguous*)0)), Ambiguous>::value), "");
+void test_modf() {
+    ASSERT_SAME_TYPE(decltype(modf((float)0, (float*)0)), float);
+    ASSERT_SAME_TYPE(decltype(modf((double)0, (double*)0)), double);
+    ASSERT_SAME_TYPE(decltype(modf((long double)0, (long double*)0)), long double);
+    ASSERT_SAME_TYPE(decltype(modff(0, (float*)0)), float);
+    ASSERT_SAME_TYPE(decltype(modfl(0, (long double*)0)), long double);
+    ASSERT_SAME_TYPE(decltype(modf(Ambiguous(), (Ambiguous*)0)), Ambiguous);
     double i;
     assert(modf(1., &i) == 0);
 }
 
-void test_pow()
-{
-    static_assert((std::is_same<decltype(powf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(powl(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(pow((int)0, (int)0)), double>::value), "");
-//     static_assert((std::is_same<decltype(pow(Value<int>(), (int)0)), double>::value), "");
-//     static_assert((std::is_same<decltype(pow(Value<long double>(), (float)0)), long double>::value), "");
-//     static_assert((std::is_same<decltype(pow((float) 0, Value<float>())), float>::value), "");
-    static_assert((std::is_same<decltype(pow(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_pow() {
+    ASSERT_SAME_TYPE(decltype(powf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(powl(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(pow((int)0, (int)0)), double);
+    // ASSERT_SAME_TYPE(decltype(pow(Value<int>(), (int)0)), double);
+    // ASSERT_SAME_TYPE(decltype(pow(Value<long double>(), (float)0)), long double);
+    // ASSERT_SAME_TYPE(decltype(pow((float) 0, Value<float>())), float);
+    ASSERT_SAME_TYPE(decltype(pow(Ambiguous(), Ambiguous())), Ambiguous);
     assert(pow(1,1) == 1);
-//     assert(pow(Value<int,1>(), Value<float,1>())  == 1);
-//     assert(pow(1.0f, Value<double,1>()) == 1);
-//     assert(pow(1.0, Value<int,1>()) == 1);
-//     assert(pow(Value<long double,1>(), 1LL) == 1);
+    // assert(pow(Value<int,1>(), Value<float,1>())  == 1);
+    // assert(pow(1.0f, Value<double,1>()) == 1);
+    // assert(pow(1.0, Value<int,1>()) == 1);
+    // assert(pow(Value<long double,1>(), 1LL) == 1);
 }
 
-void test_sin()
-{
-    static_assert((std::is_same<decltype(sinf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(sinl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(sin(Ambiguous())), Ambiguous>::value), "");
+void test_sin() {
+    ASSERT_SAME_TYPE(decltype(sinf(0)), float);
+    ASSERT_SAME_TYPE(decltype(sinl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(sin(Ambiguous())), Ambiguous);
     assert(sin(0) == 0);
 }
 
-void test_sinh()
-{
-    static_assert((std::is_same<decltype(sinhf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(sinhl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(sinh(Ambiguous())), Ambiguous>::value), "");
+void test_sinh() {
+    ASSERT_SAME_TYPE(decltype(sinhf(0)), float);
+    ASSERT_SAME_TYPE(decltype(sinhl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(sinh(Ambiguous())), Ambiguous);
     assert(sinh(0) == 0);
 }
 
-void test_sqrt()
-{
-    static_assert((std::is_same<decltype(sqrtf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(sqrtl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(sqrt(Ambiguous())), Ambiguous>::value), "");
+void test_sqrt() {
+    ASSERT_SAME_TYPE(decltype(sqrtf(0)), float);
+    ASSERT_SAME_TYPE(decltype(sqrtl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(sqrt(Ambiguous())), Ambiguous);
     assert(sqrt(4) == 2);
 }
 
-void test_tan()
-{
-    static_assert((std::is_same<decltype(tanf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(tanl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(tan(Ambiguous())), Ambiguous>::value), "");
+void test_tan() {
+    ASSERT_SAME_TYPE(decltype(tanf(0)), float);
+    ASSERT_SAME_TYPE(decltype(tanl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(tan(Ambiguous())), Ambiguous);
     assert(tan(0) == 0);
 }
 
-void test_tanh()
-{
-    static_assert((std::is_same<decltype(tanhf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(tanhl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(tanh(Ambiguous())), Ambiguous>::value), "");
+void test_tanh() {
+    ASSERT_SAME_TYPE(decltype(tanhf(0)), float);
+    ASSERT_SAME_TYPE(decltype(tanhl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(tanh(Ambiguous())), Ambiguous);
     assert(tanh(0) == 0);
 }
 
-void test_signbit()
-{
+void test_signbit() {
 #ifdef signbit
 #error signbit defined
 #endif
-    static_assert((std::is_same<decltype(signbit(Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(signbit(Ambiguous())), Ambiguous);
     assert(signbit(-1.0) == true);
 }
 
-void test_fpclassify()
-{
+void test_fpclassify() {
 #ifdef fpclassify
 #error fpclassify defined
 #endif
-    static_assert((std::is_same<decltype(fpclassify(Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(fpclassify(Ambiguous())), Ambiguous);
     assert(fpclassify(-1.0) == FP_NORMAL);
 }
 
-void test_isfinite()
-{
+void test_isfinite() {
 #ifdef isfinite
 #error isfinite defined
 #endif
-    static_assert((std::is_same<decltype(isfinite(Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(isfinite(Ambiguous())), Ambiguous);
     assert(isfinite(-1.0) == true);
 }
 
-void test_isnormal()
-{
+void test_isnormal() {
 #ifdef isnormal
 #error isnormal defined
 #endif
-    static_assert((std::is_same<decltype(isnormal(Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(isnormal(Ambiguous())), Ambiguous);
     assert(isnormal(-1.0) == true);
 }
 
-void test_isgreater()
-{
+void test_isgreater() {
 #ifdef isgreater
 #error isgreater defined
 #endif
-    static_assert((std::is_same<decltype(isgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(isgreater(Ambiguous(), Ambiguous())), Ambiguous);
     assert(isgreater(-1.0, 0.F) == false);
 }
 
-void test_isgreaterequal()
-{
+void test_isgreaterequal() {
 #ifdef isgreaterequal
 #error isgreaterequal defined
 #endif
-    static_assert((std::is_same<decltype(isgreaterequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(isgreaterequal(Ambiguous(), Ambiguous())), Ambiguous);
     assert(isgreaterequal(-1.0, 0.F) == false);
 }
 
-void test_isinf()
-{
+void test_isinf() {
 #ifdef isinf
 #error isinf defined
 #endif
-    static_assert((std::is_same<decltype(isinf((float)0)), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(isinf((float)0)), bool);
 
     typedef decltype(isinf((double)0)) DoubleRetType;
 #ifndef __linux__
-    static_assert((std::is_same<DoubleRetType, bool>::value), "");
+    ASSERT_SAME_TYPE(DoubleRetType, bool);
 #else
     // GLIBC < 2.26 defines 'isinf(double)' with a return type of 'int' in
     // all C++ dialects. The test should tolerate this.
     // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
     static_assert((std::is_same<DoubleRetType, bool>::value
                 || std::is_same<DoubleRetType, int>::value), "");
 #endif
 
-    static_assert((std::is_same<decltype(isinf(0)), bool>::value), "");
-    static_assert((std::is_same<decltype(isinf((long double)0)), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(isinf(0)), bool);
+    ASSERT_SAME_TYPE(decltype(isinf((long double)0)), bool);
     assert(isinf(-1.0) == false);
 }
 
-void test_isless()
-{
+void test_isless() {
 #ifdef isless
 #error isless defined
 #endif
-    static_assert((std::is_same<decltype(isless(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(isless(Ambiguous(), Ambiguous())), Ambiguous);
     assert(isless(-1.0, 0.F) == true);
 }
 
-void test_islessequal()
-{
+void test_islessequal() {
 #ifdef islessequal
 #error islessequal defined
 #endif
-    static_assert((std::is_same<decltype(islessequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(islessequal(Ambiguous(), Ambiguous())), Ambiguous);
     assert(islessequal(-1.0, 0.F) == true);
 }
 
-void test_islessgreater()
-{
+void test_islessgreater() {
 #ifdef islessgreater
 #error islessgreater defined
 #endif
-    static_assert((std::is_same<decltype(islessgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(islessgreater(Ambiguous(), Ambiguous())), Ambiguous);
     assert(islessgreater(-1.0, 0.F) == true);
 }
 
-void test_isnan()
-{
+void test_isnan() {
 #ifdef isnan
 #error isnan defined
 #endif
-    static_assert((std::is_same<decltype(isnan((float)0)), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(isnan((float)0)), bool);
 
     typedef decltype(isnan((double)0)) DoubleRetType;
 #ifndef __linux__
-    static_assert((std::is_same<DoubleRetType, bool>::value), "");
+    ASSERT_SAME_TYPE(DoubleRetType, bool);
 #else
     // GLIBC < 2.26 defines 'isnan(double)' with a return type of 'int' in
     // all C++ dialects. The test should tolerate this.
     // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
     static_assert((std::is_same<DoubleRetType, bool>::value
                 || std::is_same<DoubleRetType, int>::value), "");
 #endif
 
-    static_assert((std::is_same<decltype(isnan(0)), bool>::value), "");
-    static_assert((std::is_same<decltype(isnan((long double)0)), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(isnan(0)), bool);
+    ASSERT_SAME_TYPE(decltype(isnan((long double)0)), bool);
     assert(isnan(-1.0) == false);
 }
 
-void test_isunordered()
-{
+void test_isunordered() {
 #ifdef isunordered
 #error isunordered defined
 #endif
-    static_assert((std::is_same<decltype(isunordered(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(isunordered(Ambiguous(), Ambiguous())), Ambiguous);
     assert(isunordered(-1.0, 0.F) == false);
 }
 
-void test_acosh()
-{
-    static_assert((std::is_same<decltype(acoshf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(acoshl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(acosh(Ambiguous())), Ambiguous>::value), "");
+void test_acosh() {
+    ASSERT_SAME_TYPE(decltype(acoshf(0)), float);
+    ASSERT_SAME_TYPE(decltype(acoshl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(acosh(Ambiguous())), Ambiguous);
     assert(acosh(1) == 0);
 }
 
-void test_asinh()
-{
-    static_assert((std::is_same<decltype(asinhf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(asinhl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(asinh(Ambiguous())), Ambiguous>::value), "");
+void test_asinh() {
+    ASSERT_SAME_TYPE(decltype(asinhf(0)), float);
+    ASSERT_SAME_TYPE(decltype(asinhl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(asinh(Ambiguous())), Ambiguous);
     assert(asinh(0) == 0);
 }
 
-void test_atanh()
-{
-    static_assert((std::is_same<decltype(atanhf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(atanhl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(atanh(Ambiguous())), Ambiguous>::value), "");
+void test_atanh() {
+    ASSERT_SAME_TYPE(decltype(atanhf(0)), float);
+    ASSERT_SAME_TYPE(decltype(atanhl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(atanh(Ambiguous())), Ambiguous);
     assert(atanh(0) == 0);
 }
 
 void test_cbrt() {
-    static_assert((std::is_same<decltype(cbrtf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(cbrtl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(cbrt(Ambiguous())), Ambiguous>::value),
-                  "");
+    ASSERT_SAME_TYPE(decltype(cbrtf(0)), float);
+    ASSERT_SAME_TYPE(decltype(cbrtl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(cbrt(Ambiguous())), Ambiguous);
     assert(truncate_fp(cbrt(1)) == 1);
-
 }
 
-void test_copysign()
-{
-    static_assert((std::is_same<decltype(copysignf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(copysignl(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(copysign((int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(copysign(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_copysign() {
+    ASSERT_SAME_TYPE(decltype(copysignf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(copysignl(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(copysign((int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(copysign(Ambiguous(), Ambiguous())), Ambiguous);
     assert(copysign(1,1) == 1);
 }
 
-void test_erf()
-{
-    static_assert((std::is_same<decltype(erff(0)), float>::value), "");
-    static_assert((std::is_same<decltype(erfl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(erf(Ambiguous())), Ambiguous>::value), "");
+void test_erf() {
+    ASSERT_SAME_TYPE(decltype(erff(0)), float);
+    ASSERT_SAME_TYPE(decltype(erfl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(erf(Ambiguous())), Ambiguous);
     assert(erf(0) == 0);
 }
 
-void test_erfc()
-{
-    static_assert((std::is_same<decltype(erfcf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(erfcl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(erfc(Ambiguous())), Ambiguous>::value), "");
+void test_erfc() {
+    ASSERT_SAME_TYPE(decltype(erfcf(0)), float);
+    ASSERT_SAME_TYPE(decltype(erfcl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(erfc(Ambiguous())), Ambiguous);
     assert(erfc(0) == 1);
 }
 
-void test_exp2()
-{
-    static_assert((std::is_same<decltype(exp2f(0)), float>::value), "");
-    static_assert((std::is_same<decltype(exp2l(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(exp2(Ambiguous())), Ambiguous>::value), "");
+void test_exp2() {
+    ASSERT_SAME_TYPE(decltype(exp2f(0)), float);
+    ASSERT_SAME_TYPE(decltype(exp2l(0)), long double);
+    ASSERT_SAME_TYPE(decltype(exp2(Ambiguous())), Ambiguous);
     assert(exp2(1) == 2);
 }
 
-void test_expm1()
-{
-    static_assert((std::is_same<decltype(expm1f(0)), float>::value), "");
-    static_assert((std::is_same<decltype(expm1l(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(expm1(Ambiguous())), Ambiguous>::value), "");
+void test_expm1() {
+    ASSERT_SAME_TYPE(decltype(expm1f(0)), float);
+    ASSERT_SAME_TYPE(decltype(expm1l(0)), long double);
+    ASSERT_SAME_TYPE(decltype(expm1(Ambiguous())), Ambiguous);
     assert(expm1(0) == 0);
 }
 
-void test_fdim()
-{
-    static_assert((std::is_same<decltype(fdimf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(fdiml(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fdim((int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(fdim(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_fdim() {
+    ASSERT_SAME_TYPE(decltype(fdimf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(fdiml(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(fdim((int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(fdim(Ambiguous(), Ambiguous())), Ambiguous);
     assert(fdim(1,0) == 1);
 }
 
-void test_fma()
-{
-    static_assert((std::is_same<decltype(fma((bool)0, (float)0, (float)0)), double>::value), "");
-    static_assert((std::is_same<decltype(fma((float)0, (float)0, (double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(fma((float)0, (float)0, (long double)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fma((float)0, (float)0, (float)0)), float>::value), "");
-
-    static_assert((std::is_same<decltype(fma((bool)0, (double)0, (double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(fma((double)0, (double)0, (float)0)), double>::value), "");
-    static_assert((std::is_same<decltype(fma((double)0, (double)0, (long double)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fma((double)0, (double)0,  (double)0)), double>::value), "");
-
-    static_assert((std::is_same<decltype(fma((long double)0, (long double)0, (float)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fma((double)0, (long double)0, (long double)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fma((long double)0, (long double)0, (long double)0)), long double>::value), "");
-
-    static_assert((std::is_same<decltype(fmaf(0,0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(fmal(0,0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fma(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_fma() {
+    ASSERT_SAME_TYPE(decltype(fma((bool)0, (float)0, (float)0)), double);
+    ASSERT_SAME_TYPE(decltype(fma((float)0, (float)0, (double)0)), double);
+    ASSERT_SAME_TYPE(decltype(fma((float)0, (float)0, (long double)0)), long double);
+    ASSERT_SAME_TYPE(decltype(fma((float)0, (float)0, (float)0)), float);
+
+    ASSERT_SAME_TYPE(decltype(fma((bool)0, (double)0, (double)0)), double);
+    ASSERT_SAME_TYPE(decltype(fma((double)0, (double)0, (float)0)), double);
+    ASSERT_SAME_TYPE(decltype(fma((double)0, (double)0, (long double)0)), long double);
+    ASSERT_SAME_TYPE(decltype(fma((double)0, (double)0,  (double)0)), double);
+
+    ASSERT_SAME_TYPE(decltype(fma((long double)0, (long double)0, (float)0)), long double);
+    ASSERT_SAME_TYPE(decltype(fma((double)0, (long double)0, (long double)0)), long double);
+    ASSERT_SAME_TYPE(decltype(fma((long double)0, (long double)0, (long double)0)), long double);
+
+    ASSERT_SAME_TYPE(decltype(fmaf(0,0,0)), float);
+    ASSERT_SAME_TYPE(decltype(fmal(0,0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(fma(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous);
     assert(fma(1,1,1) == 2);
 }
 
-void test_fmax()
-{
-    static_assert((std::is_same<decltype(fmaxf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(fmaxl(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fmax((int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(fmax(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_fmax() {
+    ASSERT_SAME_TYPE(decltype(fmaxf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(fmaxl(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(fmax((int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(fmax(Ambiguous(), Ambiguous())), Ambiguous);
     assert(fmax(1,0) == 1);
 }
 
-void test_fmin()
-{
-    static_assert((std::is_same<decltype(fminf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(fminl(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(fmin((int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(fmin(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_fmin() {
+    ASSERT_SAME_TYPE(decltype(fminf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(fminl(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(fmin((int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(fmin(Ambiguous(), Ambiguous())), Ambiguous);
     assert(fmin(1,0) == 0);
 }
 
-void test_hypot()
-{
-    static_assert((std::is_same<decltype(hypotf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(hypotl(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(hypot((int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_hypot() {
+    ASSERT_SAME_TYPE(decltype(hypotf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(hypotl(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(hypot((int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(hypot(Ambiguous(), Ambiguous())), Ambiguous);
     assert(hypot(3,4) == 5);
 }
 
-void test_ilogb()
-{
-    static_assert((std::is_same<decltype(ilogbf(0)), int>::value), "");
-    static_assert((std::is_same<decltype(ilogbl(0)), int>::value), "");
-    static_assert((std::is_same<decltype(ilogb(Ambiguous())), Ambiguous>::value), "");
+void test_ilogb() {
+    ASSERT_SAME_TYPE(decltype(ilogbf(0)), int);
+    ASSERT_SAME_TYPE(decltype(ilogbl(0)), int);
+    ASSERT_SAME_TYPE(decltype(ilogb(Ambiguous())), Ambiguous);
     assert(ilogb(1) == 0);
 }
 
-void test_lgamma()
-{
-    static_assert((std::is_same<decltype(lgammaf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(lgammal(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(lgamma(Ambiguous())), Ambiguous>::value), "");
+void test_lgamma() {
+    ASSERT_SAME_TYPE(decltype(lgammaf(0)), float);
+    ASSERT_SAME_TYPE(decltype(lgammal(0)), long double);
+    ASSERT_SAME_TYPE(decltype(lgamma(Ambiguous())), Ambiguous);
     assert(lgamma(1) == 0);
 }
 
-void test_llrint()
-{
-    static_assert((std::is_same<decltype(llrintf(0)), long long>::value), "");
-    static_assert((std::is_same<decltype(llrintl(0)), long long>::value), "");
-    static_assert((std::is_same<decltype(llrint(Ambiguous())), Ambiguous>::value), "");
+void test_llrint() {
+    ASSERT_SAME_TYPE(decltype(llrintf(0)), long long);
+    ASSERT_SAME_TYPE(decltype(llrintl(0)), long long);
+    ASSERT_SAME_TYPE(decltype(llrint(Ambiguous())), Ambiguous);
     assert(llrint(1) == 1LL);
 }
 
-void test_llround()
-{
-    static_assert((std::is_same<decltype(llroundf(0)), long long>::value), "");
-    static_assert((std::is_same<decltype(llroundl(0)), long long>::value), "");
-    static_assert((std::is_same<decltype(llround(Ambiguous())), Ambiguous>::value), "");
+void test_llround() {
+    ASSERT_SAME_TYPE(decltype(llroundf(0)), long long);
+    ASSERT_SAME_TYPE(decltype(llroundl(0)), long long);
+    ASSERT_SAME_TYPE(decltype(llround(Ambiguous())), Ambiguous);
     assert(llround(1) == 1LL);
 }
 
-void test_log1p()
-{
-    static_assert((std::is_same<decltype(log1pf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(log1pl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(log1p(Ambiguous())), Ambiguous>::value), "");
+void test_log1p() {
+    ASSERT_SAME_TYPE(decltype(log1pf(0)), float);
+    ASSERT_SAME_TYPE(decltype(log1pl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(log1p(Ambiguous())), Ambiguous);
     assert(log1p(0) == 0);
 }
 
-void test_log2()
-{
-    static_assert((std::is_same<decltype(log2f(0)), float>::value), "");
-    static_assert((std::is_same<decltype(log2l(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(log2(Ambiguous())), Ambiguous>::value), "");
+void test_log2() {
+    ASSERT_SAME_TYPE(decltype(log2f(0)), float);
+    ASSERT_SAME_TYPE(decltype(log2l(0)), long double);
+    ASSERT_SAME_TYPE(decltype(log2(Ambiguous())), Ambiguous);
     assert(log2(1) == 0);
 }
 
-void test_logb()
-{
-    static_assert((std::is_same<decltype(logbf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(logbl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(logb(Ambiguous())), Ambiguous>::value), "");
+void test_logb() {
+    ASSERT_SAME_TYPE(decltype(logbf(0)), float);
+    ASSERT_SAME_TYPE(decltype(logbl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(logb(Ambiguous())), Ambiguous);
     assert(logb(1) == 0);
 }
 
-void test_lrint()
-{
-    static_assert((std::is_same<decltype(lrintf(0)), long>::value), "");
-    static_assert((std::is_same<decltype(lrintl(0)), long>::value), "");
-    static_assert((std::is_same<decltype(lrint(Ambiguous())), Ambiguous>::value), "");
+void test_lrint() {
+    ASSERT_SAME_TYPE(decltype(lrintf(0)), long);
+    ASSERT_SAME_TYPE(decltype(lrintl(0)), long);
+    ASSERT_SAME_TYPE(decltype(lrint(Ambiguous())), Ambiguous);
     assert(lrint(1) == 1L);
 }
 
-void test_lround()
-{
-    static_assert((std::is_same<decltype(lroundf(0)), long>::value), "");
-    static_assert((std::is_same<decltype(lroundl(0)), long>::value), "");
-    static_assert((std::is_same<decltype(lround(Ambiguous())), Ambiguous>::value), "");
+void test_lround() {
+    ASSERT_SAME_TYPE(decltype(lroundf(0)), long);
+    ASSERT_SAME_TYPE(decltype(lroundl(0)), long);
+    ASSERT_SAME_TYPE(decltype(lround(Ambiguous())), Ambiguous);
     assert(lround(1) == 1L);
 }
 
-void test_nan()
-{
-    static_assert((std::is_same<decltype(nan("")), double>::value), "");
-    static_assert((std::is_same<decltype(nanf("")), float>::value), "");
-    static_assert((std::is_same<decltype(nanl("")), long double>::value), "");
+void test_nan() {
+    ASSERT_SAME_TYPE(decltype(nan("")), double);
+    ASSERT_SAME_TYPE(decltype(nanf("")), float);
+    ASSERT_SAME_TYPE(decltype(nanl("")), long double);
 }
 
-void test_nearbyint()
-{
-    static_assert((std::is_same<decltype(nearbyintf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(nearbyintl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(nearbyint(Ambiguous())), Ambiguous>::value), "");
+void test_nearbyint() {
+    ASSERT_SAME_TYPE(decltype(nearbyintf(0)), float);
+    ASSERT_SAME_TYPE(decltype(nearbyintl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(nearbyint(Ambiguous())), Ambiguous);
     assert(nearbyint(1) == 1);
 }
 
-void test_nextafter()
-{
-    static_assert((std::is_same<decltype(nextafterf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(nextafterl(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(nextafter((int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nextafter(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_nextafter() {
+    ASSERT_SAME_TYPE(decltype(nextafterf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(nextafterl(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(nextafter((int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(nextafter(Ambiguous(), Ambiguous())), Ambiguous);
     assert(nextafter(0,1) == hexfloat<double>(0x1, 0, -1074));
 }
 
-void test_nexttoward()
-{
-    static_assert((std::is_same<decltype(nexttoward((float)0, (long double)0)), float>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((bool)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((unsigned short)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((int)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((unsigned int)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((long)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((unsigned long)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((long long)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((unsigned long long)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((double)0, (long double)0)), double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward((long double)0, (long double)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(nexttowardf(0, (long double)0)), float>::value), "");
-    static_assert((std::is_same<decltype(nexttowardl(0, (long double)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(nexttoward(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_nexttoward() {
+    ASSERT_SAME_TYPE(decltype(nexttoward((float)0, (long double)0)), float);
+    ASSERT_SAME_TYPE(decltype(nexttoward((bool)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((unsigned short)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((int)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((unsigned int)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((long)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((unsigned long)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((long long)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((unsigned long long)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((double)0, (long double)0)), double);
+    ASSERT_SAME_TYPE(decltype(nexttoward((long double)0, (long double)0)), long double);
+    ASSERT_SAME_TYPE(decltype(nexttowardf(0, (long double)0)), float);
+    ASSERT_SAME_TYPE(decltype(nexttowardl(0, (long double)0)), long double);
+    ASSERT_SAME_TYPE(decltype(nexttoward(Ambiguous(), Ambiguous())), Ambiguous);
     assert(nexttoward(0, 1) == hexfloat<double>(0x1, 0, -1074));
 }
 
-void test_remainder()
-{
-    static_assert((std::is_same<decltype(remainderf(0,0)), float>::value), "");
-    static_assert((std::is_same<decltype(remainderl(0,0)), long double>::value), "");
-    static_assert((std::is_same<decltype(remainder((int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(remainder(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_remainder() {
+    ASSERT_SAME_TYPE(decltype(remainderf(0,0)), float);
+    ASSERT_SAME_TYPE(decltype(remainderl(0,0)), long double);
+    ASSERT_SAME_TYPE(decltype(remainder((int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(remainder(Ambiguous(), Ambiguous())), Ambiguous);
     assert(remainder(0.5,1) == 0.5);
 }
 
-void test_remquo()
-{
+void test_remquo() {
     int ip;
-    static_assert((std::is_same<decltype(remquof(0,0, &ip)), float>::value), "");
-    static_assert((std::is_same<decltype(remquol(0,0, &ip)), long double>::value), "");
-    static_assert((std::is_same<decltype(remquo((int)0, (int)0, &ip)), double>::value), "");
-    static_assert((std::is_same<decltype(remquo(Ambiguous(), Ambiguous(), &ip)), Ambiguous>::value), "");
+    ASSERT_SAME_TYPE(decltype(remquof(0,0, &ip)), float);
+    ASSERT_SAME_TYPE(decltype(remquol(0,0, &ip)), long double);
+    ASSERT_SAME_TYPE(decltype(remquo((int)0, (int)0, &ip)), double);
+    ASSERT_SAME_TYPE(decltype(remquo(Ambiguous(), Ambiguous(), &ip)), Ambiguous);
     assert(remquo(0.5,1, &ip) == 0.5);
 }
 
-void test_rint()
-{
-    static_assert((std::is_same<decltype(rintf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(rintl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(rint(Ambiguous())), Ambiguous>::value), "");
+void test_rint() {
+    ASSERT_SAME_TYPE(decltype(rintf(0)), float);
+    ASSERT_SAME_TYPE(decltype(rintl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(rint(Ambiguous())), Ambiguous);
     assert(rint(1) == 1);
 }
 
-void test_round()
-{
-    static_assert((std::is_same<decltype(roundf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(roundl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(round(Ambiguous())), Ambiguous>::value), "");
+void test_round() {
+    ASSERT_SAME_TYPE(decltype(roundf(0)), float);
+    ASSERT_SAME_TYPE(decltype(roundl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(round(Ambiguous())), Ambiguous);
     assert(round(1) == 1);
 }
 
-void test_scalbln()
-{
-    static_assert((std::is_same<decltype(scalbln((float)0, (long)0)), float>::value), "");
-    static_assert((std::is_same<decltype(scalbln((bool)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((unsigned short)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((int)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((unsigned int)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((long)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((unsigned long)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((long long)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((unsigned long long)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((double)0, (long)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbln((long double)0, (long)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(scalblnf(0, (long)0)), float>::value), "");
-    static_assert((std::is_same<decltype(scalblnl(0, (long)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(scalbln(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_scalbln() {
+    ASSERT_SAME_TYPE(decltype(scalbln((float)0, (long)0)), float);
+    ASSERT_SAME_TYPE(decltype(scalbln((bool)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((unsigned short)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((int)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((unsigned int)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((long)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((unsigned long)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((long long)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((unsigned long long)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((double)0, (long)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbln((long double)0, (long)0)), long double);
+    ASSERT_SAME_TYPE(decltype(scalblnf(0, (long)0)), float);
+    ASSERT_SAME_TYPE(decltype(scalblnl(0, (long)0)), long double);
+    ASSERT_SAME_TYPE(decltype(scalbln(Ambiguous(), Ambiguous())), Ambiguous);
     assert(scalbln(1, 1) == 2);
 }
 
-void test_scalbn()
-{
-    static_assert((std::is_same<decltype(scalbn((float)0, (int)0)), float>::value), "");
-    static_assert((std::is_same<decltype(scalbn((bool)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((unsigned short)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((unsigned int)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((long)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((unsigned long)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((long long)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((unsigned long long)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((double)0, (int)0)), double>::value), "");
-    static_assert((std::is_same<decltype(scalbn((long double)0, (int)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(scalbnf(0, (int)0)), float>::value), "");
-    static_assert((std::is_same<decltype(scalbnl(0, (int)0)), long double>::value), "");
-    static_assert((std::is_same<decltype(scalbn(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+void test_scalbn() {
+    ASSERT_SAME_TYPE(decltype(scalbn((float)0, (int)0)), float);
+    ASSERT_SAME_TYPE(decltype(scalbn((bool)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((unsigned short)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((unsigned int)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((long)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((unsigned long)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((long long)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((unsigned long long)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((double)0, (int)0)), double);
+    ASSERT_SAME_TYPE(decltype(scalbn((long double)0, (int)0)), long double);
+    ASSERT_SAME_TYPE(decltype(scalbnf(0, (int)0)), float);
+    ASSERT_SAME_TYPE(decltype(scalbnl(0, (int)0)), long double);
+    ASSERT_SAME_TYPE(decltype(scalbn(Ambiguous(), Ambiguous())), Ambiguous);
     assert(scalbn(1, 1) == 2);
 }
 
-void test_tgamma()
-{
-    static_assert((std::is_same<decltype(tgammaf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(tgammal(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(tgamma(Ambiguous())), Ambiguous>::value), "");
+void test_tgamma() {
+    ASSERT_SAME_TYPE(decltype(tgammaf(0)), float);
+    ASSERT_SAME_TYPE(decltype(tgammal(0)), long double);
+    ASSERT_SAME_TYPE(decltype(tgamma(Ambiguous())), Ambiguous);
     assert(tgamma(1) == 1);
 }
 
-void test_trunc()
-{
-    static_assert((std::is_same<decltype(truncf(0)), float>::value), "");
-    static_assert((std::is_same<decltype(truncl(0)), long double>::value), "");
-    static_assert((std::is_same<decltype(trunc(Ambiguous())), Ambiguous>::value), "");
+void test_trunc() {
+    ASSERT_SAME_TYPE(decltype(truncf(0)), float);
+    ASSERT_SAME_TYPE(decltype(truncl(0)), long double);
+    ASSERT_SAME_TYPE(decltype(trunc(Ambiguous())), Ambiguous);
     assert(trunc(1) == 1);
 }
 
 template <class PromoteResult, class Arg = void>
 struct test_single_arg {
   template <class T = Arg>
   void operator()() {
-    static_assert((std::is_same<decltype(::acos(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::acos(T())), PromoteResult);
     (void)::acos(T());
-    static_assert((std::is_same<decltype(::asin(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::asin(T())), PromoteResult);
     (void)::asin(T());
-    static_assert((std::is_same<decltype(::atan(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::atan(T())), PromoteResult);
     (void)::atan(T());
-    static_assert((std::is_same<decltype(::ceil(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::ceil(T())), PromoteResult);
     (void)::ceil(T());
-    static_assert((std::is_same<decltype(::cos(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::cos(T())), PromoteResult);
     (void)::cos(T());
-    static_assert((std::is_same<decltype(::cosh(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::cosh(T())), PromoteResult);
     (void)::cosh(T());
-    static_assert((std::is_same<decltype(::exp(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::exp(T())), PromoteResult);
     (void)::exp(T());
-    static_assert((std::is_same<decltype(::fabs(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::fabs(T())), PromoteResult);
     (void)::fabs(T());
-    static_assert((std::is_same<decltype(::floor(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::floor(T())), PromoteResult);
     (void)::floor(T());
     int ip;
-    static_assert((std::is_same<decltype(::frexp(T(), &ip)), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::frexp(T(), &ip)), PromoteResult);
     (void)::frexp(T(), &ip);
-    static_assert((std::is_same<decltype(::ldexp(T(), ip)), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::ldexp(T(), ip)), PromoteResult);
     (void)::ldexp(T(), ip);
-    static_assert((std::is_same<decltype(::log(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::log(T())), PromoteResult);
     (void)::log(T());
-    static_assert((std::is_same<decltype(::log10(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::log10(T())), PromoteResult);
     (void)::log10(T());
-    static_assert((std::is_same<decltype(::sin(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::sin(T())), PromoteResult);
     (void)::sin(T());
-    static_assert((std::is_same<decltype(::sinh(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::sinh(T())), PromoteResult);
     (void)::sinh(T());
-    static_assert((std::is_same<decltype(::sqrt(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::sqrt(T())), PromoteResult);
     (void)::sqrt(T());
-    static_assert((std::is_same<decltype(::tan(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::tan(T())), PromoteResult);
     (void)::tan(T());
-    static_assert((std::is_same<decltype(::tanh(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::tanh(T())), PromoteResult);
     (void)::tanh(T());
-    static_assert((std::is_same<decltype(::signbit(T())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::signbit(T())), bool);
     (void)::signbit(T());
-    static_assert((std::is_same<decltype(::fpclassify(T())), int>::value), "");
+    ASSERT_SAME_TYPE(decltype(::fpclassify(T())), int);
     (void)::fpclassify(T());
-    static_assert((std::is_same<decltype(::isfinite(T())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::isfinite(T())), bool);
     (void)::isfinite(T());
-    static_assert((std::is_same<decltype(::isnormal(T())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::isnormal(T())), bool);
     (void)::isnormal(T());
-    static_assert((std::is_same<decltype(::acosh(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::acosh(T())), PromoteResult);
     (void)::acosh(T());
-    static_assert((std::is_same<decltype(::asinh(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::asinh(T())), PromoteResult);
     (void)::asinh(T());
-    static_assert((std::is_same<decltype(::atanh(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::atanh(T())), PromoteResult);
     (void)::atanh(T());
-    static_assert((std::is_same<decltype(::cbrt(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::cbrt(T())), PromoteResult);
     (void)::cbrt(T());
-    static_assert((std::is_same<decltype(::erf(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::erf(T())), PromoteResult);
     (void)::erf(T());
-    static_assert((std::is_same<decltype(::erfc(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::erfc(T())), PromoteResult);
     (void)::erfc(T());
-    static_assert((std::is_same<decltype(::exp2(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::exp2(T())), PromoteResult);
     (void)::exp2(T());
-    static_assert((std::is_same<decltype(::expm1(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::expm1(T())), PromoteResult);
     (void)::expm1(T());
-    static_assert((std::is_same<decltype(::ilogb(T())), int>::value), "");
+    ASSERT_SAME_TYPE(decltype(::ilogb(T())), int);
     (void)::ilogb(T());
-    static_assert((std::is_same<decltype(::lgamma(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::lgamma(T())), PromoteResult);
     (void)::lgamma(T());
-    static_assert((std::is_same<decltype(::llrint(T())), long long>::value), "");
+    ASSERT_SAME_TYPE(decltype(::llrint(T())), long long);
     (void)::llrint(T());
-    static_assert((std::is_same<decltype(::llround(T())), long long>::value), "");
+    ASSERT_SAME_TYPE(decltype(::llround(T())), long long);
     (void)::llround(T());
-    static_assert((std::is_same<decltype(::log1p(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::log1p(T())), PromoteResult);
     (void)::log1p(T());
-    static_assert((std::is_same<decltype(::log2(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::log2(T())), PromoteResult);
     (void)::log2(T());
-    static_assert((std::is_same<decltype(::logb(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::logb(T())), PromoteResult);
     (void)::logb(T());
-    static_assert((std::is_same<decltype(::lrint(T())), long>::value), "");
+    ASSERT_SAME_TYPE(decltype(::lrint(T())), long);
     (void)::lrint(T());
-    static_assert((std::is_same<decltype(::lround(T())), long>::value), "");
+    ASSERT_SAME_TYPE(decltype(::lround(T())), long);
     (void)::lround(T());
-    static_assert((std::is_same<decltype(::nearbyint(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::nearbyint(T())), PromoteResult);
     (void)::nearbyint(T());
-    static_assert((std::is_same<decltype(::rint(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::rint(T())), PromoteResult);
     (void)::rint(T());
-    static_assert((std::is_same<decltype(::round(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::round(T())), PromoteResult);
     (void)::round(T());
-    static_assert((std::is_same<decltype(::trunc(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::trunc(T())), PromoteResult);
     (void)::trunc(T());
-    static_assert((std::is_same<decltype(::tgamma(T())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::tgamma(T())), PromoteResult);
     (void)::tgamma(T());
   }
 };
 
 template <class PromoteResult, class Arg1 = void, class Arg2 = void>
 struct test_two_args {
   template <class T = Arg1, class U = Arg2>
   void operator()() {
-    static_assert((std::is_same<decltype(::atan2(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::atan2(T(), U())), PromoteResult);
     (void)::atan2(T(), U());
-    static_assert((std::is_same<decltype(::fmod(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::fmod(T(), U())), PromoteResult);
     (void)::fmod(T(), U());
-    static_assert((std::is_same<decltype(::pow(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::pow(T(), U())), PromoteResult);
     (void)::pow(T(), U());
-    static_assert((std::is_same<decltype(::isgreater(T(), U())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::isgreater(T(), U())), bool);
     (void)::isgreater(T(), U());
-    static_assert((std::is_same<decltype(::isgreaterequal(T(), U())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::isgreaterequal(T(), U())), bool);
     (void)::isgreaterequal(T(), U());
-    static_assert((std::is_same<decltype(::isless(T(), U())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::isless(T(), U())), bool);
     (void)::isless(T(), U());
-    static_assert((std::is_same<decltype(::islessequal(T(), U())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::islessequal(T(), U())), bool);
     (void)::islessequal(T(), U());
-    static_assert((std::is_same<decltype(::islessgreater(T(), U())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::islessgreater(T(), U())), bool);
     (void)::islessgreater(T(), U());
-    static_assert((std::is_same<decltype(::isunordered(T(), U())), bool>::value), "");
+    ASSERT_SAME_TYPE(decltype(::isunordered(T(), U())), bool);
     (void)::isunordered(T(), U());
-    static_assert((std::is_same<decltype(::copysign(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::copysign(T(), U())), PromoteResult);
     (void)::copysign(T(), U());
-    static_assert((std::is_same<decltype(::fdim(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::fdim(T(), U())), PromoteResult);
     (void)::fdim(T(), U());
-    static_assert((std::is_same<decltype(::fmax(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::fmax(T(), U())), PromoteResult);
     (void)::fmax(T(), U());
-    static_assert((std::is_same<decltype(::fmin(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::fmin(T(), U())), PromoteResult);
     (void)::fmin(T(), U());
-    static_assert((std::is_same<decltype(::hypot(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::hypot(T(), U())), PromoteResult);
     (void)::hypot(T(), U());
-    static_assert((std::is_same<decltype(::nextafter(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::nextafter(T(), U())), PromoteResult);
     (void)::nextafter(T(), U());
-    static_assert((std::is_same<decltype(::remainder(T(), U())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::remainder(T(), U())), PromoteResult);
     (void)::remainder(T(), U());
     int ip;
-    static_assert((std::is_same<decltype(::remquo(T(), U(), &ip)), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::remquo(T(), U(), &ip)), PromoteResult);
     ::remquo(T(), U(), &ip);
   }
 };
 
 template <class PromoteResult, class Arg1 = void, class Arg2 = void, class Arg3 = void>
 struct test_three_args {
   template <class T = Arg1, class U = Arg2, class V = Arg3>
   void operator()() {
-    static_assert((std::is_same<decltype(::fma(T(), U(), V())), PromoteResult>::value), "");
+    ASSERT_SAME_TYPE(decltype(::fma(T(), U(), V())), PromoteResult);
     (void)::fma(T(), U(), V());
   }
 };
 
 struct CallTwoArgs {
   using integral_float_double = types::concatenate_t<types::integral_types, types::type_list<float, double> >;
 
   template <class Arg2>
struct CallThreeArgs {
   };
 
   template <class Arg3>
   void operator()() {
     types::for_each(integral_float_double(), Helper<Arg3>());
   }
 };
 
-int main(int, char**)
-{
+int main(int, char**) {
   types::for_each(types::integral_types(), test_single_arg</*PromoteResult=*/double>());
   test_single_arg</*PromoteResult=*/float, /*Arg=*/float>();
   test_single_arg</*PromoteResult=*/double, /*Arg=*/double>();
   test_single_arg</*PromoteResult=*/long double, /*Arg=*/long double>();
 
   types::for_each(types::integral_types(), CallTwoArgs());
 
   types::for_each(

libcxx/test/std/depr/depr.c.headers/setjmp_h.compile.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // test <setjmp.h>
 
 #include <setjmp.h>
-#include <type_traits>
+
+#include "test_macros.h"
 
 #ifndef setjmp
 #error setjmp not defined
 #endif
 
 jmp_buf jb;
-static_assert(std::is_same<decltype(longjmp(jb, 0)), void>::value, "");
+ASSERT_SAME_TYPE(void, decltype(longjmp(jb, 0)));

libcxx/test/std/depr/depr.c.headers/signal_h.compile.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // test <signal.h>
 
 #include <signal.h>
-#include <type_traits>
+
+#include "test_macros.h"
 
 #ifndef SIG_DFL
 #error SIG_DFL not defined
 #endif
 
 #ifndef SIG_ERR
 #error SIG_ERR not defined
 #endif

 #endif
 
 #ifndef SIGTERM
 #error SIGTERM not defined
 #endif
 
 sig_atomic_t sig;
 typedef void (*func)(int);
-static_assert((std::is_same<decltype(signal(0, (func)0)), func>::value), "");
-static_assert((std::is_same<decltype(raise(0)), int>::value), "");
+ASSERT_SAME_TYPE(func, decltype(signal(0, (func)0)));
+ASSERT_SAME_TYPE(int,  decltype(raise(0)));

libcxx/test/std/depr/depr.c.headers/stddef_h.compile.pass.cpp

+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stddef.h>
+
+#include <stddef.h>
+
+#include "test_macros.h"
+
+void use() {
+    // Make sure we can use the following types without including anything else
+    (void)sizeof(size_t);
+    (void)sizeof(ptrdiff_t);
+#if TEST_STD_VER >= 11
+    (void)sizeof(nullptr);
+    (void)sizeof(nullptr_t);
+    (void)sizeof(max_align_t);
+#endif
+}
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef offsetof
+#error offsetof not defined
+#endif
+
+#include <type_traits>
+
+static_assert(sizeof(size_t) == sizeof(void*), "");
+static_assert(std::is_unsigned<size_t>::value, "");
+static_assert(std::is_integral<size_t>::value, "");
+static_assert(sizeof(ptrdiff_t) == sizeof(void*), "");
+static_assert(std::is_signed<ptrdiff_t>::value, "");
+static_assert(std::is_integral<ptrdiff_t>::value, "");
+static_assert((std::is_same<decltype(nullptr), nullptr_t>::value), "");
+static_assert(sizeof(nullptr_t) == sizeof(void*), "");
+#if TEST_STD_VER >= 11
+#  if TEST_STD_VER >= 20
+// P0767
+static_assert(std::is_trivial<max_align_t>::value, "");
+static_assert(std::is_standard_layout<max_align_t>::value, "");
+#  else
+static_assert(std::is_pod<max_align_t>::value, "");
+#  endif
+static_assert(std::alignment_of<max_align_t>::value >= std::alignment_of<long long>::value, "");
+static_assert(std::alignment_of<max_align_t>::value >= std::alignment_of<long double>::value, "");
+static_assert(std::alignment_of<max_align_t>::value >= std::alignment_of<void*>::value, "");
+#endif // TEST_STD_VER >= 11

libcxx/test/std/depr/depr.c.headers/stddef_h.nullptr.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
-// test <setjmp.h>
+// <stddef.h>
 
-#include <setjmp.h>
-#include <type_traits>
+#include <stddef.h>
+#include <cassert>
 
-#ifndef setjmp
-#error setjmp not defined
-#endif
+int main(int, char**) {
+    {
+        void *p = NULL;
+        assert(!p);
+    }
+    {
+        void *p = nullptr;
+        assert(!p);
+    }
 
-jmp_buf jb;
-static_assert(std::is_same<decltype(longjmp(jb, 0)), void>::value, "");
+    return 0;
+}

libcxx/test/std/depr/depr.c.headers/stddef_h.pass.cpp

-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-// <stddef.h>
-
-#include <stddef.h>
-#include <cassert>
-#include <type_traits>
-
-#include "test_macros.h"
-
-#ifndef NULL
-#error NULL not defined
-#endif
-
-#ifndef offsetof
-#error offsetof not defined
-#endif
-
-int main(int, char**) {
-    void *p = NULL;
-    assert(!p);
-
-    static_assert(sizeof(size_t) == sizeof(void*),
-                  "sizeof(size_t) == sizeof(void*)");
-    static_assert(std::is_unsigned<size_t>::value,
-                  "std::is_unsigned<size_t>::value");
-    static_assert(std::is_integral<size_t>::value,
-                  "std::is_integral<size_t>::value");
-    static_assert(sizeof(ptrdiff_t) == sizeof(void*),
-                  "sizeof(ptrdiff_t) == sizeof(void*)");
-    static_assert(std::is_signed<ptrdiff_t>::value,
-                  "std::is_signed<ptrdiff_t>::value");
-    static_assert(std::is_integral<ptrdiff_t>::value,
-                  "std::is_integral<ptrdiff_t>::value");
-    static_assert((std::is_same<decltype(nullptr), nullptr_t>::value),
-                  "decltype(nullptr) == nullptr_t");
-    static_assert(sizeof(nullptr_t) == sizeof(void*),
-                  "sizeof(nullptr_t) == sizeof(void*)");
-#if TEST_STD_VER >= 11
-#if TEST_STD_VER > 17
-//   P0767
-    static_assert(std::is_trivial<max_align_t>::value,
-                  "std::is_trivial<max_align_t>::value");
-    static_assert(std::is_standard_layout<max_align_t>::value,
-                  "std::is_standard_layout<max_align_t>::value");
-#else
-    static_assert(std::is_pod<max_align_t>::value,
-                  "std::is_pod<max_align_t>::value");
-#endif
-    static_assert((std::alignment_of<max_align_t>::value >=
-                  std::alignment_of<long long>::value),
-                  "std::alignment_of<max_align_t>::value >= "
-                  "std::alignment_of<long long>::value");
-    static_assert(std::alignment_of<max_align_t>::value >=
-                  std::alignment_of<long double>::value,
-                  "std::alignment_of<max_align_t>::value >= "
-                  "std::alignment_of<long double>::value");
-    static_assert(std::alignment_of<max_align_t>::value >=
-                  std::alignment_of<void*>::value,
-                  "std::alignment_of<max_align_t>::value >= "
-                  "std::alignment_of<void*>::value");
-#endif
-
-    return 0;
-}

libcxx/test/std/depr/depr.c.headers/stdint_h.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // test <stdint.h>
 
 #include <stdint.h>
+
+void use() {
+    // Make sure we can use the following types without including anything else
+    (void)sizeof(int8_t);
+    (void)sizeof(int16_t);
+    (void)sizeof(int32_t);
+    (void)sizeof(int64_t);
+
+    (void)sizeof(uint8_t);
+    (void)sizeof(uint16_t);
+    (void)sizeof(uint32_t);
+    (void)sizeof(uint64_t);
+
+    (void)sizeof(int_least8_t);
+    (void)sizeof(int_least16_t);
+    (void)sizeof(int_least32_t);
+    (void)sizeof(int_least64_t);
+
+    (void)sizeof(uint_least8_t);
+    (void)sizeof(uint_least16_t);
+    (void)sizeof(uint_least32_t);
+    (void)sizeof(uint_least64_t);
+
+    (void)sizeof(int_fast8_t);
+    (void)sizeof(int_fast16_t);
+    (void)sizeof(int_fast32_t);
+    (void)sizeof(int_fast64_t);
+
+    (void)sizeof(uint_fast8_t);
+    (void)sizeof(uint_fast16_t);
+    (void)sizeof(uint_fast32_t);
+    (void)sizeof(uint_fast64_t);
+
+    (void)sizeof(intptr_t);
+    (void)sizeof(uintptr_t);
+    (void)sizeof(intmax_t);
+    (void)sizeof(uintmax_t);
+}
+
 #include <cstddef>
 #include <csignal>
 #include <climits>
 #include <type_traits>
 #include <limits>
 #include <cassert>
 
 #include "test_macros.h"
 
 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
 #   include <cwctype>
 #endif
 
 int main(int, char**) {
     // typedef int8_t
-    static_assert(sizeof(int8_t)*CHAR_BIT == 8,
-                 "sizeof(int8_t)*CHAR_BIT == 8");
-    static_assert(std::is_signed<int8_t>::value,
-                 "std::is_signed<int8_t>::value");
+    static_assert(sizeof(int8_t)*CHAR_BIT == 8, "");
+    static_assert(std::is_signed<int8_t>::value, "");
     // typedef int16_t
-    static_assert(sizeof(int16_t)*CHAR_BIT == 16,
-                 "sizeof(int16_t)*CHAR_BIT == 16");
-    static_assert(std::is_signed<int16_t>::value,
-                 "std::is_signed<int16_t>::value");
+    static_assert(sizeof(int16_t)*CHAR_BIT == 16, "");
+    static_assert(std::is_signed<int16_t>::value, "");
     // typedef int32_t
-    static_assert(sizeof(int32_t)*CHAR_BIT == 32,
-                 "sizeof(int32_t)*CHAR_BIT == 32");
-    static_assert(std::is_signed<int32_t>::value,
-                 "std::is_signed<int32_t>::value");
+    static_assert(sizeof(int32_t)*CHAR_BIT == 32, "");
+    static_assert(std::is_signed<int32_t>::value, "");
     // typedef int64_t
-    static_assert(sizeof(int64_t)*CHAR_BIT == 64,
-                 "sizeof(int64_t)*CHAR_BIT == 64");
-    static_assert(std::is_signed<int64_t>::value,
-                 "std::is_signed<int64_t>::value");
+    static_assert(sizeof(int64_t)*CHAR_BIT == 64, "");
+    static_assert(std::is_signed<int64_t>::value, "");
 
     // typedef uint8_t
-    static_assert(sizeof(uint8_t)*CHAR_BIT == 8,
-                 "sizeof(uint8_t)*CHAR_BIT == 8");
-    static_assert(std::is_unsigned<uint8_t>::value,
-                 "std::is_unsigned<uint8_t>::value");
+    static_assert(sizeof(uint8_t)*CHAR_BIT == 8, "");
+    static_assert(std::is_unsigned<uint8_t>::value, "");
     // typedef uint16_t
-    static_assert(sizeof(uint16_t)*CHAR_BIT == 16,
-                 "sizeof(uint16_t)*CHAR_BIT == 16");
-    static_assert(std::is_unsigned<uint16_t>::value,
-                 "std::is_unsigned<uint16_t>::value");
+    static_assert(sizeof(uint16_t)*CHAR_BIT == 16, "");
+    static_assert(std::is_unsigned<uint16_t>::value, "");
     // typedef uint32_t
-    static_assert(sizeof(uint32_t)*CHAR_BIT == 32,
-                 "sizeof(uint32_t)*CHAR_BIT == 32");
-    static_assert(std::is_unsigned<uint32_t>::value,
-                 "std::is_unsigned<uint32_t>::value");
+    static_assert(sizeof(uint32_t)*CHAR_BIT == 32, "");
+    static_assert(std::is_unsigned<uint32_t>::value, "");
     // typedef uint64_t
-    static_assert(sizeof(uint64_t)*CHAR_BIT == 64,
-                 "sizeof(uint64_t)*CHAR_BIT == 64");
-    static_assert(std::is_unsigned<uint64_t>::value,
-                 "std::is_unsigned<uint64_t>::value");
+    static_assert(sizeof(uint64_t)*CHAR_BIT == 64, "");
+    static_assert(std::is_unsigned<uint64_t>::value, "");
 
     // typedef int_least8_t
-    static_assert(sizeof(int_least8_t)*CHAR_BIT >= 8,
-                 "sizeof(int_least8_t)*CHAR_BIT >= 8");
-    static_assert(std::is_signed<int_least8_t>::value,
-                 "std::is_signed<int_least8_t>::value");
+    static_assert(sizeof(int_least8_t)*CHAR_BIT >= 8, "");
+    static_assert(std::is_signed<int_least8_t>::value, "");
     // typedef int_least16_t
-    static_assert(sizeof(int_least16_t)*CHAR_BIT >= 16,
-                 "sizeof(int_least16_t)*CHAR_BIT >= 16");
-    static_assert(std::is_signed<int_least16_t>::value,
-                 "std::is_signed<int_least16_t>::value");
+    static_assert(sizeof(int_least16_t)*CHAR_BIT >= 16, "");
+    static_assert(std::is_signed<int_least16_t>::value, "");
     // typedef int_least32_t
-    static_assert(sizeof(int_least32_t)*CHAR_BIT >= 32,
-                 "sizeof(int_least32_t)*CHAR_BIT >= 32");
-    static_assert(std::is_signed<int_least32_t>::value,
-                 "std::is_signed<int_least32_t>::value");
+    static_assert(sizeof(int_least32_t)*CHAR_BIT >= 32, "");
+    static_assert(std::is_signed<int_least32_t>::value, "");
     // typedef int_least64_t
-    static_assert(sizeof(int_least64_t)*CHAR_BIT >= 64,
-                 "sizeof(int_least64_t)*CHAR_BIT >= 64");
-    static_assert(std::is_signed<int_least64_t>::value,
-                 "std::is_signed<int_least64_t>::value");
+    static_assert(sizeof(int_least64_t)*CHAR_BIT >= 64, "");
+    static_assert(std::is_signed<int_least64_t>::value, "");
 
     // typedef uint_least8_t
-    static_assert(sizeof(uint_least8_t)*CHAR_BIT >= 8,
-                 "sizeof(uint_least8_t)*CHAR_BIT >= 8");
-    static_assert(std::is_unsigned<uint_least8_t>::value,
-                 "std::is_unsigned<uint_least8_t>::value");
+    static_assert(sizeof(uint_least8_t)*CHAR_BIT >= 8, "");
+    static_assert(std::is_unsigned<uint_least8_t>::value, "");
     // typedef uint_least16_t
-    static_assert(sizeof(uint_least16_t)*CHAR_BIT >= 16,
-                 "sizeof(uint_least16_t)*CHAR_BIT >= 16");
-    static_assert(std::is_unsigned<uint_least16_t>::value,
-                 "std::is_unsigned<uint_least16_t>::value");
+    static_assert(sizeof(uint_least16_t)*CHAR_BIT >= 16, "");
+    static_assert(std::is_unsigned<uint_least16_t>::value, "");
     // typedef uint_least32_t
-    static_assert(sizeof(uint_least32_t)*CHAR_BIT >= 32,
-                 "sizeof(uint_least32_t)*CHAR_BIT >= 32");
-    static_assert(std::is_unsigned<uint_least32_t>::value,
-                 "std::is_unsigned<uint_least32_t>::value");
+    static_assert(sizeof(uint_least32_t)*CHAR_BIT >= 32, "");
+    static_assert(std::is_unsigned<uint_least32_t>::value, "");
     // typedef uint_least64_t
-    static_assert(sizeof(uint_least64_t)*CHAR_BIT >= 64,
-                 "sizeof(uint_least64_t)*CHAR_BIT >= 64");
-    static_assert(std::is_unsigned<uint_least64_t>::value,
-                 "std::is_unsigned<uint_least64_t>::value");
+    static_assert(sizeof(uint_least64_t)*CHAR_BIT >= 64, "");
+    static_assert(std::is_unsigned<uint_least64_t>::value, "");
 
     // typedef int_fast8_t
-    static_assert(sizeof(int_fast8_t)*CHAR_BIT >= 8,
-                 "sizeof(int_fast8_t)*CHAR_BIT >= 8");
-    static_assert(std::is_signed<int_fast8_t>::value,
-                 "std::is_signed<int_fast8_t>::value");
+    static_assert(sizeof(int_fast8_t)*CHAR_BIT >= 8, "");
+    static_assert(std::is_signed<int_fast8_t>::value, "");
     // typedef int_fast16_t
-    static_assert(sizeof(int_fast16_t)*CHAR_BIT >= 16,
-                 "sizeof(int_fast16_t)*CHAR_BIT >= 16");
-    static_assert(std::is_signed<int_fast16_t>::value,
-                 "std::is_signed<int_fast16_t>::value");
+    static_assert(sizeof(int_fast16_t)*CHAR_BIT >= 16, "");
+    static_assert(std::is_signed<int_fast16_t>::value, "");
     // typedef int_fast32_t
-    static_assert(sizeof(int_fast32_t)*CHAR_BIT >= 32,
-                 "sizeof(int_fast32_t)*CHAR_BIT >= 32");
-    static_assert(std::is_signed<int_fast32_t>::value,
-                 "std::is_signed<int_fast32_t>::value");
+    static_assert(sizeof(int_fast32_t)*CHAR_BIT >= 32, "");
+    static_assert(std::is_signed<int_fast32_t>::value, "");
     // typedef int_fast64_t
-    static_assert(sizeof(int_fast64_t)*CHAR_BIT >= 64,
-                 "sizeof(int_fast64_t)*CHAR_BIT >= 64");
-    static_assert(std::is_signed<int_fast64_t>::value,
-                 "std::is_signed<int_fast64_t>::value");
+    static_assert(sizeof(int_fast64_t)*CHAR_BIT >= 64, "");
+    static_assert(std::is_signed<int_fast64_t>::value, "");
 
     // typedef uint_fast8_t
-    static_assert(sizeof(uint_fast8_t)*CHAR_BIT >= 8,
-                 "sizeof(uint_fast8_t)*CHAR_BIT >= 8");
-    static_assert(std::is_unsigned<uint_fast8_t>::value,
-                 "std::is_unsigned<uint_fast8_t>::value");
+    static_assert(sizeof(uint_fast8_t)*CHAR_BIT >= 8, "");
+    static_assert(std::is_unsigned<uint_fast8_t>::value, "");
     // typedef uint_fast16_t
-    static_assert(sizeof(uint_fast16_t)*CHAR_BIT >= 16,
-                 "sizeof(uint_fast16_t)*CHAR_BIT >= 16");
-    static_assert(std::is_unsigned<uint_fast16_t>::value,
-                 "std::is_unsigned<uint_fast16_t>::value");
+    static_assert(sizeof(uint_fast16_t)*CHAR_BIT >= 16, "");
+    static_assert(std::is_unsigned<uint_fast16_t>::value, "");
     // typedef uint_fast32_t
-    static_assert(sizeof(uint_fast32_t)*CHAR_BIT >= 32,
-                 "sizeof(uint_fast32_t)*CHAR_BIT >= 32");
-    static_assert(std::is_unsigned<uint_fast32_t>::value,
-                 "std::is_unsigned<uint_fast32_t>::value");
+    static_assert(sizeof(uint_fast32_t)*CHAR_BIT >= 32, "");
+    static_assert(std::is_unsigned<uint_fast32_t>::value, "");
     // typedef uint_fast64_t
-    static_assert(sizeof(uint_fast64_t)*CHAR_BIT >= 64,
-                 "sizeof(uint_fast64_t)*CHAR_BIT >= 64");
-    static_assert(std::is_unsigned<uint_fast64_t>::value,
-                 "std::is_unsigned<uint_fast64_t>::value");
+    static_assert(sizeof(uint_fast64_t)*CHAR_BIT >= 64, "");
+    static_assert(std::is_unsigned<uint_fast64_t>::value, "");
 
     // typedef intptr_t
-    static_assert(sizeof(intptr_t) >= sizeof(void*),
-                 "sizeof(intptr_t) >= sizeof(void*)");
-    static_assert(std::is_signed<intptr_t>::value,
-                 "std::is_signed<intptr_t>::value");
+    static_assert(sizeof(intptr_t) >= sizeof(void*), "");
+    static_assert(std::is_signed<intptr_t>::value, "");
     // typedef uintptr_t
-    static_assert(sizeof(uintptr_t) >= sizeof(void*),
-                 "sizeof(uintptr_t) >= sizeof(void*)");
-    static_assert(std::is_unsigned<uintptr_t>::value,
-                 "std::is_unsigned<uintptr_t>::value");
+    static_assert(sizeof(uintptr_t) >= sizeof(void*), "");
+    static_assert(std::is_unsigned<uintptr_t>::value, "");
 
     // typedef intmax_t
-    static_assert(sizeof(intmax_t) >= sizeof(long long),
-                 "sizeof(intmax_t) >= sizeof(long long)");
-    static_assert(std::is_signed<intmax_t>::value,
-                 "std::is_signed<intmax_t>::value");
+    static_assert(sizeof(intmax_t) >= sizeof(long long), "");
+    static_assert(std::is_signed<intmax_t>::value, "");
     // typedef uintmax_t
-    static_assert(sizeof(uintmax_t) >= sizeof(unsigned long long),
-                 "sizeof(uintmax_t) >= sizeof(unsigned long long)");
-    static_assert(std::is_unsigned<uintmax_t>::value,
-                 "std::is_unsigned<uintmax_t>::value");
+    static_assert(sizeof(uintmax_t) >= sizeof(unsigned long long), "");
+    static_assert(std::is_unsigned<uintmax_t>::value, "");
 
     // INTN_MIN
-    static_assert(INT8_MIN == -128, "INT8_MIN == -128");
-    static_assert(INT16_MIN == -32768, "INT16_MIN == -32768");
-    static_assert(INT32_MIN == -2147483647 - 1, "INT32_MIN == -2147483648");
-    static_assert(INT64_MIN == -9223372036854775807LL - 1, "INT64_MIN == -9223372036854775808LL");
+    static_assert(INT8_MIN == -128, "");
+    static_assert(INT16_MIN == -32768, "");
+    static_assert(INT32_MIN == -2147483647 - 1, "");
+    static_assert(INT64_MIN == -9223372036854775807LL - 1, "");
 
     // INTN_MAX
-    static_assert(INT8_MAX == 127, "INT8_MAX == 127");
-    static_assert(INT16_MAX == 32767, "INT16_MAX == 32767");
-    static_assert(INT32_MAX == 2147483647, "INT32_MAX == 2147483647");
-    static_assert(INT64_MAX == 9223372036854775807LL, "INT64_MAX == 9223372036854775807LL");
+    static_assert(INT8_MAX == 127, "");
+    static_assert(INT16_MAX == 32767, "");
+    static_assert(INT32_MAX == 2147483647, "");
+    static_assert(INT64_MAX == 9223372036854775807LL, "");
 
     // UINTN_MAX
-    static_assert(UINT8_MAX == 255, "UINT8_MAX == 255");
-    static_assert(UINT16_MAX == 65535, "UINT16_MAX == 65535");
-    static_assert(UINT32_MAX == 4294967295U, "UINT32_MAX == 4294967295");
-    static_assert(UINT64_MAX == 18446744073709551615ULL, "UINT64_MAX == 18446744073709551615ULL");
+    static_assert(UINT8_MAX == 255, "");
+    static_assert(UINT16_MAX == 65535, "");
+    static_assert(UINT32_MAX == 4294967295U, "");
+    static_assert(UINT64_MAX == 18446744073709551615ULL, "");
 
     // INT_FASTN_MIN
-    static_assert(INT_FAST8_MIN <= -128, "INT_FAST8_MIN <= -128");
-    static_assert(INT_FAST16_MIN <= -32768, "INT_FAST16_MIN <= -32768");
-    static_assert(INT_FAST32_MIN <= -2147483647 - 1, "INT_FAST32_MIN <= -2147483648");
-    static_assert(INT_FAST64_MIN <= -9223372036854775807LL - 1, "INT_FAST64_MIN <= -9223372036854775808LL");
+    static_assert(INT_FAST8_MIN <= -128, "");
+    static_assert(INT_FAST16_MIN <= -32768, "");
+    static_assert(INT_FAST32_MIN <= -2147483647 - 1, "");
+    static_assert(INT_FAST64_MIN <= -9223372036854775807LL - 1, "");
 
     // INT_FASTN_MAX
-    static_assert(INT_FAST8_MAX >= 127, "INT_FAST8_MAX >= 127");
-    static_assert(INT_FAST16_MAX >= 32767, "INT_FAST16_MAX >= 32767");
-    static_assert(INT_FAST32_MAX >= 2147483647, "INT_FAST32_MAX >= 2147483647");
-    static_assert(INT_FAST64_MAX >= 9223372036854775807LL, "INT_FAST64_MAX >= 9223372036854775807LL");
+    static_assert(INT_FAST8_MAX >= 127, "");
+    static_assert(INT_FAST16_MAX >= 32767, "");
+    static_assert(INT_FAST32_MAX >= 2147483647, "");
+    static_assert(INT_FAST64_MAX >= 9223372036854775807LL, "");
 
     // UINT_FASTN_MAX
-    static_assert(UINT_FAST8_MAX >= 255, "UINT_FAST8_MAX >= 255");
-    static_assert(UINT_FAST16_MAX >= 65535, "UINT_FAST16_MAX >= 65535");
-    static_assert(UINT_FAST32_MAX >= 4294967295U, "UINT_FAST32_MAX >= 4294967295");
-    static_assert(UINT_FAST64_MAX >= 18446744073709551615ULL, "UINT_FAST64_MAX >= 18446744073709551615ULL");
+    static_assert(UINT_FAST8_MAX >= 255, "");
+    static_assert(UINT_FAST16_MAX >= 65535, "");
+    static_assert(UINT_FAST32_MAX >= 4294967295U, "");
+    static_assert(UINT_FAST64_MAX >= 18446744073709551615ULL, "");
 
     // INTPTR_MIN
     assert(INTPTR_MIN == std::numeric_limits<intptr_t>::min());
 
     // INTPTR_MAX
     assert(INTPTR_MAX == std::numeric_limits<intptr_t>::max());
 
     // UINTPTR_MAX

libcxx/test/std/depr/depr.c.headers/stdio_h.compile.pass.cpp

+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <stdio.h>
+
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "test_macros.h"
+
+#ifdef getc
+#error getc is defined
+#endif
+
+#ifdef putc
+#error putc is defined
+#endif
+
+#ifdef clearerr
+#error clearerr is defined
+#endif
+
+#ifdef feof
+#error feof is defined
+#endif
+
+#ifdef ferror
+#error ferror is defined
+#endif
+
+#ifndef BUFSIZ
+#error BUFSIZ not defined
+#endif
+
+#ifndef EOF
+#error EOF not defined
+#endif
+
+#ifndef FILENAME_MAX
+#error FILENAME_MAX not defined
+#endif
+
+#ifndef FOPEN_MAX
+#error FOPEN_MAX not defined
+#endif
+
+#ifndef L_tmpnam
+#error L_tmpnam not defined
+#endif
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef SEEK_CUR
+#error SEEK_CUR not defined
+#endif
+
+#ifndef SEEK_END
+#error SEEK_END not defined
+#endif
+
+#ifndef SEEK_SET
+#error SEEK_SET not defined
+#endif
+
+#ifndef TMP_MAX
+#error TMP_MAX not defined
+#endif
+
+#ifndef _IOFBF
+#error _IOFBF not defined
+#endif
+
+#ifndef _IOLBF
+#error _IOLBF not defined
+#endif
+
+#ifndef _IONBF
+#error _IONBF not defined
+#endif
+
+#ifndef stderr
+#error stderr not defined
+#endif
+
+#ifndef stdin
+#error stdin not defined
+#endif
+
+#ifndef stdout
+#error stdout not defined
+#endif
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wformat-zero-length")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wformat-zero-length")
+
+FILE* fp = 0;
+fpos_t fpos = fpos_t();
+size_t s = 0;
+char* cp = 0;
+char arr[] = {'a', 'b'};
+va_list va;
+ASSERT_SAME_TYPE(int,    decltype(remove("")));
+ASSERT_SAME_TYPE(int,    decltype(rename("","")));
+ASSERT_SAME_TYPE(FILE*,  decltype(tmpfile()));
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+ASSERT_SAME_TYPE(char*,  decltype(tmpnam(cp)));
+TEST_DIAGNOSTIC_POP
+ASSERT_SAME_TYPE(int,    decltype(fclose(fp)));
+ASSERT_SAME_TYPE(int,    decltype(fflush(fp)));
+ASSERT_SAME_TYPE(FILE*,  decltype(fopen("", "")));
+ASSERT_SAME_TYPE(FILE*,  decltype(freopen("", "", fp)));
+ASSERT_SAME_TYPE(void,   decltype(setbuf(fp,cp)));
+ASSERT_SAME_TYPE(int,    decltype(vfprintf(fp,"",va)));
+ASSERT_SAME_TYPE(int,    decltype(fprintf(fp," ")));
+ASSERT_SAME_TYPE(int,    decltype(fscanf(fp,"")));
+ASSERT_SAME_TYPE(int,    decltype(printf("\n")));
+ASSERT_SAME_TYPE(int,    decltype(scanf("\n")));
+ASSERT_SAME_TYPE(int,    decltype(snprintf(cp,0,"p")));
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+ASSERT_SAME_TYPE(int,    decltype(sprintf(cp," ")));
+TEST_DIAGNOSTIC_POP
+ASSERT_SAME_TYPE(int,    decltype(sscanf("","")));
+ASSERT_SAME_TYPE(int,    decltype(vfprintf(fp,"",va)));
+ASSERT_SAME_TYPE(int,    decltype(vfscanf(fp,"",va)));
+ASSERT_SAME_TYPE(int,    decltype(vprintf(" ",va)));
+ASSERT_SAME_TYPE(int,    decltype(vscanf("",va)));
+ASSERT_SAME_TYPE(int,    decltype(vsnprintf(cp,0," ",va)));
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+ASSERT_SAME_TYPE(int,    decltype(vsprintf(cp," ",va)));
+TEST_DIAGNOSTIC_POP
+ASSERT_SAME_TYPE(int,    decltype(vsscanf("","",va)));
+ASSERT_SAME_TYPE(int,    decltype(fgetc(fp)));
+ASSERT_SAME_TYPE(char*,  decltype(fgets(cp,0,fp)));
+ASSERT_SAME_TYPE(int,    decltype(fputc(0,fp)));
+ASSERT_SAME_TYPE(int,    decltype(fputs("",fp)));
+ASSERT_SAME_TYPE(int,    decltype(getc(fp)));
+ASSERT_SAME_TYPE(int,    decltype(getchar()));
+#if TEST_STD_VER < 14
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+ASSERT_SAME_TYPE(char*,  decltype(gets(cp)));
+TEST_DIAGNOSTIC_POP
+#endif
+ASSERT_SAME_TYPE(int,    decltype(putc(0,fp)));
+ASSERT_SAME_TYPE(int,    decltype(putchar(0)));
+ASSERT_SAME_TYPE(int,    decltype(puts("")));
+ASSERT_SAME_TYPE(int,    decltype(ungetc(0,fp)));
+ASSERT_SAME_TYPE(size_t, decltype(fread((void*)0,0,0,fp)));
+ASSERT_SAME_TYPE(size_t, decltype(fwrite((const void*)arr,1,0,fp)));
+#ifndef TEST_HAS_NO_FGETPOS_FSETPOS
+ASSERT_SAME_TYPE(int,    decltype(fgetpos(fp, &fpos)));
+#endif
+ASSERT_SAME_TYPE(int,    decltype(fseek(fp, 0,0)));
+#ifndef TEST_HAS_NO_FGETPOS_FSETPOS
+ASSERT_SAME_TYPE(int,    decltype(fsetpos(fp, &fpos)));
+#endif
+ASSERT_SAME_TYPE(long,   decltype(ftell(fp)));
+ASSERT_SAME_TYPE(void,   decltype(rewind(fp)));
+ASSERT_SAME_TYPE(void,   decltype(clearerr(fp)));
+ASSERT_SAME_TYPE(int,    decltype(feof(fp)));
+ASSERT_SAME_TYPE(int,    decltype(ferror(fp)));
+ASSERT_SAME_TYPE(void,   decltype(perror("")));

libcxx/test/std/depr/depr.c.headers/stdio_h.pass.cpp

-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-// test <stdio.h>
-
-#include <stdio.h>
-#include <type_traits>
-#include "test_macros.h"
-
-#ifdef getc
-#error getc is defined
-#endif
-
-#ifdef putc
-#error putc is defined
-#endif
-
-#ifdef clearerr
-#error clearerr is defined
-#endif
-
-#ifdef feof
-#error feof is defined
-#endif
-
-#ifdef ferror
-#error ferror is defined
-#endif
-
-#ifndef BUFSIZ
-#error BUFSIZ not defined
-#endif
-
-#ifndef EOF
-#error EOF not defined
-#endif
-
-#ifndef FILENAME_MAX
-#error FILENAME_MAX not defined
-#endif
-
-#ifndef FOPEN_MAX
-#error FOPEN_MAX not defined
-#endif
-
-#ifndef L_tmpnam
-#error L_tmpnam not defined
-#endif
-
-#ifndef NULL
-#error NULL not defined
-#endif
-
-#ifndef SEEK_CUR
-#error SEEK_CUR not defined
-#endif
-
-#ifndef SEEK_END
-#error SEEK_END not defined
-#endif
-
-#ifndef SEEK_SET
-#error SEEK_SET not defined
-#endif
-
-#ifndef TMP_MAX
-#error TMP_MAX not defined
-#endif
-
-#ifndef _IOFBF
-#error _IOFBF not defined
-#endif
-
-#ifndef _IOLBF
-#error _IOLBF not defined
-#endif
-
-#ifndef _IONBF
-#error _IONBF not defined
-#endif
-
-#ifndef stderr
-#error stderr not defined
-#endif
-
-#ifndef stdin
-#error stdin not defined
-#endif
-
-#ifndef stdout
-#error stdout not defined
-#endif
-
-#include <cstdarg>
-
-TEST_CLANG_DIAGNOSTIC_IGNORED("-Wformat-zero-length")
-TEST_GCC_DIAGNOSTIC_IGNORED("-Wformat-zero-length")
-
-int main(int, char**) {
-    FILE* fp = 0;
-    fpos_t fpos = fpos_t();
-    size_t s = 0;
-    char* cp = 0;
-    char arr[] = {'a', 'b'};
-    va_list va;
-    ((void)fp); // Prevent unused warning
-    ((void)fpos); // Prevent unused warning
-    ((void)s); // Prevent unused warning
-    ((void)cp); // Prevent unused warning
-    ((void)arr); // Prevent unused warning
-    ((void)va); // Prevent unused warning
-    static_assert((std::is_same<decltype(remove("")), int>::value), "");
-    static_assert((std::is_same<decltype(rename("","")), int>::value), "");
-    static_assert((std::is_same<decltype(tmpfile()), FILE*>::value), "");
-    TEST_DIAGNOSTIC_PUSH
-    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
-    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
-    static_assert((std::is_same<decltype(tmpnam(cp)), char*>::value), "");
-    TEST_DIAGNOSTIC_POP
-    static_assert((std::is_same<decltype(fclose(fp)), int>::value), "");
-    static_assert((std::is_same<decltype(fflush(fp)), int>::value), "");
-    static_assert((std::is_same<decltype(fopen("", "")), FILE*>::value), "");
-    static_assert((std::is_same<decltype(freopen("", "", fp)), FILE*>::value), "");
-    static_assert((std::is_same<decltype(setbuf(fp,cp)), void>::value), "");
-    static_assert((std::is_same<decltype(vfprintf(fp,"",va)), int>::value), "");
-    static_assert((std::is_same<decltype(fprintf(fp," ")), int>::value), "");
-    static_assert((std::is_same<decltype(fscanf(fp,"")), int>::value), "");
-    static_assert((std::is_same<decltype(printf("\n")), int>::value), "");
-    static_assert((std::is_same<decltype(scanf("\n")), int>::value), "");
-    static_assert((std::is_same<decltype(snprintf(cp,0,"p")), int>::value), "");
-    TEST_DIAGNOSTIC_PUSH
-    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
-    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
-    static_assert((std::is_same<decltype(sprintf(cp," ")), int>::value), "");
-    TEST_DIAGNOSTIC_POP
-    static_assert((std::is_same<decltype(sscanf("","")), int>::value), "");
-    static_assert((std::is_same<decltype(vfprintf(fp,"",va)), int>::value), "");
-    static_assert((std::is_same<decltype(vfscanf(fp,"",va)), int>::value), "");
-    static_assert((std::is_same<decltype(vprintf(" ",va)), int>::value), "");
-    static_assert((std::is_same<decltype(vscanf("",va)), int>::value), "");
-    static_assert((std::is_same<decltype(vsnprintf(cp,0," ",va)), int>::value), "");
-    TEST_DIAGNOSTIC_PUSH
-    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
-    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
-    static_assert((std::is_same<decltype(vsprintf(cp," ",va)), int>::value), "");
-    TEST_DIAGNOSTIC_POP
-    static_assert((std::is_same<decltype(vsscanf("","",va)), int>::value), "");
-    static_assert((std::is_same<decltype(fgetc(fp)), int>::value), "");
-    static_assert((std::is_same<decltype(fgets(cp,0,fp)), char*>::value), "");
-    static_assert((std::is_same<decltype(fputc(0,fp)), int>::value), "");
-    static_assert((std::is_same<decltype(fputs("",fp)), int>::value), "");
-    static_assert((std::is_same<decltype(getc(fp)), int>::value), "");
-    static_assert((std::is_same<decltype(getchar()), int>::value), "");
-#if TEST_STD_VER < 14
-    TEST_DIAGNOSTIC_PUSH
-    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
-    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
-    static_assert((std::is_same<decltype(gets(cp)), char*>::value), "");
-    TEST_DIAGNOSTIC_POP
-#endif
-    static_assert((std::is_same<decltype(putc(0,fp)), int>::value), "");
-    static_assert((std::is_same<decltype(putchar(0)), int>::value), "");
-    static_assert((std::is_same<decltype(puts("")), int>::value), "");
-    static_assert((std::is_same<decltype(ungetc(0,fp)), int>::value), "");
-    static_assert((std::is_same<decltype(fread((void*)0,0,0,fp)), size_t>::value), "");
-    static_assert((std::is_same<decltype(fwrite((const void*)arr,1,0,fp)), size_t>::value), "");
-#ifndef TEST_HAS_NO_FGETPOS_FSETPOS
-    static_assert((std::is_same<decltype(fgetpos(fp, &fpos)), int>::value), "");
-#endif
-    static_assert((std::is_same<decltype(fseek(fp, 0,0)), int>::value), "");
-#ifndef TEST_HAS_NO_FGETPOS_FSETPOS
-    static_assert((std::is_same<decltype(fsetpos(fp, &fpos)), int>::value), "");
-#endif
-    static_assert((std::is_same<decltype(ftell(fp)), long>::value), "");
-    static_assert((std::is_same<decltype(rewind(fp)), void>::value), "");
-    static_assert((std::is_same<decltype(clearerr(fp)), void>::value), "");
-    static_assert((std::is_same<decltype(feof(fp)), int>::value), "");
-    static_assert((std::is_same<decltype(ferror(fp)), int>::value), "");
-    static_assert((std::is_same<decltype(perror("")), void>::value), "");
-
-    return 0;
-}

libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp

 std::false_type has_abs_imp(...);
 
 template <class T>
 struct has_abs : decltype(has_abs_imp<T>(0)) {};
 
 void test_abs() {
   TEST_DIAGNOSTIC_PUSH
   TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value")
-  static_assert((std::is_same<decltype(abs((float)0)), float>::value), "");
-  static_assert((std::is_same<decltype(abs((double)0)), double>::value), "");
-  static_assert(
-      (std::is_same<decltype(abs((long double)0)), long double>::value), "");
-  static_assert((std::is_same<decltype(abs((int)0)), int>::value), "");
-  static_assert((std::is_same<decltype(abs((long)0)), long>::value), "");
-  static_assert((std::is_same<decltype(abs((long long)0)), long long>::value),
-                "");
-  static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value),
-                "");
-  static_assert((std::is_same<decltype(abs((unsigned short)0)), int>::value),
-                "");
-  static_assert((std::is_same<decltype(abs((signed char)0)), int>::value),
-                "");
-  static_assert((std::is_same<decltype(abs((short)0)), int>::value),
-                "");
-  static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value),
-                "");
-  static_assert((std::is_same<decltype(abs((char)0)), int>::value),
-                "");
+  ASSERT_SAME_TYPE(float,       decltype(abs((float)0)));
+  ASSERT_SAME_TYPE(double,      decltype(abs((double)0)));
+  ASSERT_SAME_TYPE(long double, decltype(abs((long double)0)));
+  ASSERT_SAME_TYPE(int,         decltype(abs((int)0)));
+  ASSERT_SAME_TYPE(long,        decltype(abs((long)0)));
+  ASSERT_SAME_TYPE(long long,   decltype(abs((long long)0)));
+  ASSERT_SAME_TYPE(int,         decltype(abs((unsigned char)0)));
+  ASSERT_SAME_TYPE(int,         decltype(abs((unsigned short)0)));
+  ASSERT_SAME_TYPE(int,         decltype(abs((signed char)0)));
+  ASSERT_SAME_TYPE(int,         decltype(abs((short)0)));
+  ASSERT_SAME_TYPE(int,         decltype(abs((unsigned char)0)));
+  ASSERT_SAME_TYPE(int,         decltype(abs((char)0)));
 
   static_assert(!has_abs<unsigned>::value, "");
   static_assert(!has_abs<unsigned long>::value, "");
   static_assert(!has_abs<unsigned long long>::value, "");
   static_assert(!has_abs<size_t>::value, "");
 
   TEST_DIAGNOSTIC_POP
 
   assert(abs(-1.) == 1);
 }
 
 int main(int, char**) {
     size_t s = 0; ((void)s);
     div_t d; ((void)d);
     ldiv_t ld; ((void)ld);
     lldiv_t lld; ((void)lld);
     char** endptr = 0;
-    static_assert((std::is_same<decltype(atof("")), double>::value), "");
-    static_assert((std::is_same<decltype(atoi("")), int>::value), "");
-    static_assert((std::is_same<decltype(atol("")), long>::value), "");
-    static_assert((std::is_same<decltype(atoll("")), long long>::value), "");
-    static_assert((std::is_same<decltype(getenv("")), char*>::value), "");
-    static_assert((std::is_same<decltype(strtod("", endptr)), double>::value), "");
-    static_assert((std::is_same<decltype(strtof("", endptr)), float>::value), "");
-    static_assert((std::is_same<decltype(strtold("", endptr)), long double>::value), "");
-    static_assert((std::is_same<decltype(strtol("", endptr,0)), long>::value), "");
-    static_assert((std::is_same<decltype(strtoll("", endptr,0)), long long>::value), "");
-    static_assert((std::is_same<decltype(strtoul("", endptr,0)), unsigned long>::value), "");
-    static_assert((std::is_same<decltype(strtoull("", endptr,0)), unsigned long long>::value), "");
-    static_assert((std::is_same<decltype(rand()), int>::value), "");
-    static_assert((std::is_same<decltype(srand(0)), void>::value), "");
+    ASSERT_SAME_TYPE(double,             decltype(atof("")));
+    ASSERT_SAME_TYPE(int,                decltype(atoi("")));
+    ASSERT_SAME_TYPE(long,               decltype(atol("")));
+    ASSERT_SAME_TYPE(long long,          decltype(atoll("")));
+    ASSERT_SAME_TYPE(char*,              decltype(getenv("")));
+    ASSERT_SAME_TYPE(double,             decltype(strtod("", endptr)));
+    ASSERT_SAME_TYPE(float,              decltype(strtof("", endptr)));
+    ASSERT_SAME_TYPE(long double,        decltype(strtold("", endptr)));
+    ASSERT_SAME_TYPE(long,               decltype(strtol("", endptr,0)));
+    ASSERT_SAME_TYPE(long long,          decltype(strtoll("", endptr,0)));
+    ASSERT_SAME_TYPE(unsigned long,      decltype(strtoul("", endptr,0)));
+    ASSERT_SAME_TYPE(unsigned long long, decltype(strtoull("", endptr,0)));
+    ASSERT_SAME_TYPE(int,                decltype(rand()));
+    ASSERT_SAME_TYPE(void,               decltype(srand(0)));
 
     // aligned_alloc tested in stdlib_h.aligned_alloc.compile.pass.cpp
 
     void* pv = 0;
     void (*handler)() = 0;
     int (*comp)(void const*, void const*) = 0;
-    static_assert((std::is_same<decltype(calloc(0,0)), void*>::value), "");
-    static_assert((std::is_same<decltype(free(0)), void>::value), "");
-    static_assert((std::is_same<decltype(malloc(0)), void*>::value), "");
-    static_assert((std::is_same<decltype(realloc(0,0)), void*>::value), "");
-    static_assert((std::is_same<decltype(abort()), void>::value), "");
-    static_assert((std::is_same<decltype(atexit(handler)), int>::value), "");
-    static_assert((std::is_same<decltype(exit(0)), void>::value), "");
-    static_assert((std::is_same<decltype(_Exit(0)), void>::value), "");
-    static_assert((std::is_same<decltype(getenv("")), char*>::value), "");
-    static_assert((std::is_same<decltype(system("")), int>::value), "");
-    static_assert((std::is_same<decltype(bsearch(pv,pv,0,0,comp)), void*>::value), "");
-    static_assert((std::is_same<decltype(qsort(pv,0,0,comp)), void>::value), "");
-    static_assert((std::is_same<decltype(abs(0)), int>::value), "");
-    static_assert((std::is_same<decltype(labs((long)0)), long>::value), "");
-    static_assert((std::is_same<decltype(llabs((long long)0)), long long>::value), "");
-    static_assert((std::is_same<decltype(div(0,0)), div_t>::value), "");
-    static_assert((std::is_same<decltype(ldiv(0L,0L)), ldiv_t>::value), "");
-    static_assert((std::is_same<decltype(lldiv(0LL,0LL)), lldiv_t>::value), "");
+    ASSERT_SAME_TYPE(void*,     decltype(calloc(0,0)));
+    ASSERT_SAME_TYPE(void,      decltype(free(0)));
+    ASSERT_SAME_TYPE(void*,     decltype(malloc(0)));
+    ASSERT_SAME_TYPE(void*,     decltype(realloc(0,0)));
+    ASSERT_SAME_TYPE(void,      decltype(abort()));
+    ASSERT_SAME_TYPE(int,       decltype(atexit(handler)));
+    ASSERT_SAME_TYPE(void,      decltype(exit(0)));
+    ASSERT_SAME_TYPE(void,      decltype(_Exit(0)));
+    ASSERT_SAME_TYPE(char*,     decltype(getenv("")));
+    ASSERT_SAME_TYPE(int,       decltype(system("")));
+    ASSERT_SAME_TYPE(void*,     decltype(bsearch(pv,pv,0,0,comp)));
+    ASSERT_SAME_TYPE(void,      decltype(qsort(pv,0,0,comp)));
+    ASSERT_SAME_TYPE(int,       decltype(abs(0)));
+    ASSERT_SAME_TYPE(long,      decltype(labs((long)0)));
+    ASSERT_SAME_TYPE(long long, decltype(llabs((long long)0)));
+    ASSERT_SAME_TYPE(div_t,     decltype(div(0,0)));
+    ASSERT_SAME_TYPE(ldiv_t,    decltype(ldiv(0L,0L)));
+    ASSERT_SAME_TYPE(lldiv_t,   decltype(lldiv(0LL,0LL)));
 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
     wchar_t* pw = 0;
     const wchar_t* pwc = 0;
     char* pc = 0;
-    static_assert((std::is_same<decltype(mblen("",0)), int>::value), "");
-    static_assert((std::is_same<decltype(mbtowc(pw,"",0)), int>::value), "");
-    static_assert((std::is_same<decltype(wctomb(pc,L' ')), int>::value), "");
-    static_assert((std::is_same<decltype(mbstowcs(pw,"",0)), size_t>::value), "");
-    static_assert((std::is_same<decltype(wcstombs(pc,pwc,0)), size_t>::value), "");
+    ASSERT_SAME_TYPE(int,    decltype(mblen("",0)));
+    ASSERT_SAME_TYPE(int,    decltype(mbtowc(pw,"",0)));
+    ASSERT_SAME_TYPE(int,    decltype(wctomb(pc,L' ')));
+    ASSERT_SAME_TYPE(size_t, decltype(mbstowcs(pw,"",0)));
+    ASSERT_SAME_TYPE(size_t, decltype(wcstombs(pc,pwc,0)));
 #endif
 
     test_abs();
 
     return 0;
 }

libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // <string.h>
 
 #include <string.h>
 #include <cassert>
-#include <type_traits>
 
 #include "test_macros.h"
 
 #ifndef NULL
 #error NULL not defined
 #endif
 
 int main(int, char**) {

libcxx/test/std/depr/depr.c.headers/time_h.compile.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // test <time.h>
 
 #include <time.h>
-#include <type_traits>
+
+#include "test_macros.h"
 
 #ifndef NULL
 #error NULL not defined
 #endif
 
 #ifndef CLOCKS_PER_SEC
 #error CLOCKS_PER_SEC not defined
 #endif
 
 clock_t c = 0;
 size_t s = 0;
 time_t t = 0;
 tm tmv = {};
-static_assert((std::is_same<decltype(clock()), clock_t>::value), "");
-static_assert((std::is_same<decltype(difftime(t,t)), double>::value), "");
-static_assert((std::is_same<decltype(mktime(&tmv)), time_t>::value), "");
-static_assert((std::is_same<decltype(time(&t)), time_t>::value), "");
-static_assert((std::is_same<decltype(asctime(&tmv)), char*>::value), "");
-static_assert((std::is_same<decltype(ctime(&t)), char*>::value), "");
-static_assert((std::is_same<decltype(gmtime(&t)), tm*>::value), "");
-static_assert((std::is_same<decltype(localtime(&t)), tm*>::value), "");
 char* c1 = 0;
 const char* c2 = 0;
-static_assert((std::is_same<decltype(strftime(c1,s,c2,&tmv)), size_t>::value), "");
+ASSERT_SAME_TYPE(clock_t, decltype(clock()));
+ASSERT_SAME_TYPE(double,  decltype(difftime(t, t)));
+ASSERT_SAME_TYPE(time_t,  decltype(mktime(&tmv)));
+ASSERT_SAME_TYPE(time_t,  decltype(time(&t)));
+ASSERT_SAME_TYPE(char*,   decltype(asctime(&tmv)));
+ASSERT_SAME_TYPE(char*,   decltype(ctime(&t)));
+ASSERT_SAME_TYPE(tm*,     decltype(gmtime(&t)));
+ASSERT_SAME_TYPE(tm*,     decltype(localtime(&t)));
+ASSERT_SAME_TYPE(size_t,  decltype(strftime(c1, s, c2, &tmv)));

libcxx/test/std/depr/depr.c.headers/wctype_h.compile.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 // XFAIL: no-wide-characters
 
 // <wctype.h>
 
 #include <wctype.h>
-#include <type_traits>
 
 #include "test_macros.h"
 
 #ifndef WEOF
 #error WEOF not defined
 #endif
 
 #ifdef iswalnum

 
 #ifdef wctrans
 #error wctrans defined
 #endif
 
 wint_t w = 0;
 wctrans_t wctr = 0;
 wctype_t wct = 0;
-static_assert((std::is_same<decltype(iswalnum(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswalpha(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswblank(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswcntrl(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswdigit(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswgraph(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswlower(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswprint(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswpunct(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswspace(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswupper(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswxdigit(w)), int>::value), "");
-static_assert((std::is_same<decltype(iswctype(w, wct)), int>::value), "");
-static_assert((std::is_same<decltype(wctype("")), wctype_t>::value), "");
-static_assert((std::is_same<decltype(towlower(w)), wint_t>::value), "");
-static_assert((std::is_same<decltype(towupper(w)), wint_t>::value), "");
-static_assert((std::is_same<decltype(towctrans(w, wctr)), wint_t>::value), "");
-static_assert((std::is_same<decltype(wctrans("")), wctrans_t>::value), "");
+ASSERT_SAME_TYPE(int,       decltype(iswalnum(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswalpha(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswblank(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswcntrl(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswdigit(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswgraph(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswlower(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswprint(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswpunct(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswspace(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswupper(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswxdigit(w)));
+ASSERT_SAME_TYPE(int,       decltype(iswctype(w, wct)));
+ASSERT_SAME_TYPE(wctype_t,  decltype(wctype("")));
+ASSERT_SAME_TYPE(wint_t,    decltype(towlower(w)));
+ASSERT_SAME_TYPE(wint_t,    decltype(towupper(w)));
+ASSERT_SAME_TYPE(wint_t,    decltype(towctrans(w, wctr)));
+ASSERT_SAME_TYPE(wctrans_t, decltype(wctrans("")));