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Differential D91292 Diff 308912 libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_result_type.pass.cpp

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libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_result_type.pass.cpp

//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// //
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information. // See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// <random> // <random>
// template<class UIntType, size_t w, size_t s, size_t r> // template<class UIntType, size_t w, size_t s, size_t r>
// class subtract_with_carry_engine; // class subtract_with_carry_engine;
// explicit subtract_with_carry_engine(result_type s = default_seed); // explicit subtract_with_carry_engine(result_type s = default_seed); // before C++20
// subtract_with_carry_engine() : subtract_with_carry_engine(default_seed) {} // C++20
// explicit subtract_with_carry_engine(result_type s); // C++20
// Serializing/deserializing the state of the RNG requires iostreams // Serializing/deserializing the state of the RNG requires iostreams
// UNSUPPORTED: libcpp-has-no-localization // UNSUPPORTED: libcpp-has-no-localization
#include <random> #include <random>
#include <sstream> #include <sstream>
#include <cassert> #include <cassert>
#include "test_macros.h" #include "test_macros.h"
#if TEST_STD_VER >= 11
#include "make_implicit.h"
#include "test_convertible.h"
#endif
template <class T>
std::string
to_string(T const &e)
{
std::ostringstream os;
os << e;
return os.str();
}
void void
test1() test1()
{ {
const char* a = "15136306 8587749 2346244 16479026 15515802 9510553 " const char* a = "15136306 8587749 2346244 16479026 15515802 9510553 "
"16090340 14501685 13839944 10789678 11581259 9590790 5840316 5953700 " "16090340 14501685 13839944 10789678 11581259 9590790 5840316 5953700 "
"13398366 8134459 16629731 6851902 15583892 1317475 4231148 9092691 " "13398366 8134459 16629731 6851902 15583892 1317475 4231148 9092691 "
"5707268 2355175 0"; "5707268 2355175 0";
std::ranlux24_base e1(0); std::ranlux24_base e1(0);
std::ostringstream os; assert(to_string(e1) == a);
os << e1;
assert(os.str() == a);
} }
void void
test2() test2()
{ {
const char* a = "10880375256626 126660097854724 33643165434010 " const char* a = "10880375256626 126660097854724 33643165434010 "
"78293780235492 179418984296008 96783156950859 238199764491708 " "78293780235492 179418984296008 96783156950859 238199764491708 "
"34339434557790 155299155394531 29014415493780 209265474179052 " "34339434557790 155299155394531 29014415493780 209265474179052 "
"263777435457028 0"; "263777435457028 0";
std::ranlux48_base e1(0); std::ranlux48_base e1(0);
std::ostringstream os; assert(to_string(e1) == a);
os << e1; }
assert(os.str() == a);
#if TEST_STD_VER > 17
template <class E>
void test_implicit_ctor() {
assert(E(E::default_seed) == make_implicit<E>());
} }
#endif
int main(int, char**) int main(int, char**)
{ {
test1(); test1();
test2(); test2();
#if TEST_STD_VER >= 11
#if TEST_STD_VER > 17
static_assert(test_convertible<std::ranlux24_base>(), "");
static_assert(test_convertible<std::ranlux48_base>(), "");
test_implicit_ctor<std::ranlux24_base>();
test_implicit_ctor<std::ranlux48_base>();
#else
static_assert(!test_convertible<std::ranlux24_base>(), "");
static_assert(!test_convertible<std::ranlux48_base>(), "");
#endif
static_assert(!test_convertible<std::ranlux24_base, uint_fast32_t>(), "");
static_assert(!test_convertible<std::ranlux48_base, uint_fast64_t>(), "");
#endif
return 0; return 0;
} }