diff --git a/libc/src/fenv/feclearexcept.cpp b/libc/src/fenv/feclearexcept.cpp
--- a/libc/src/fenv/feclearexcept.cpp
+++ b/libc/src/fenv/feclearexcept.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/feclearexcept.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 namespace __llvm_libc {
 
diff --git a/libc/src/fenv/fegetenv.cpp b/libc/src/fenv/fegetenv.cpp
--- a/libc/src/fenv/fegetenv.cpp
+++ b/libc/src/fenv/fegetenv.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/fegetenv.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 namespace __llvm_libc {
 
diff --git a/libc/src/fenv/fegetexceptflag.cpp b/libc/src/fenv/fegetexceptflag.cpp
--- a/libc/src/fenv/fegetexceptflag.cpp
+++ b/libc/src/fenv/fegetexceptflag.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/fegetexceptflag.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 #include <fenv.h>
 
diff --git a/libc/src/fenv/fegetround.cpp b/libc/src/fenv/fegetround.cpp
--- a/libc/src/fenv/fegetround.cpp
+++ b/libc/src/fenv/fegetround.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/fegetround.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 namespace __llvm_libc {
 
diff --git a/libc/src/fenv/feholdexcept.cpp b/libc/src/fenv/feholdexcept.cpp
--- a/libc/src/fenv/feholdexcept.cpp
+++ b/libc/src/fenv/feholdexcept.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/feholdexcept.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 #include <fenv.h>
 
diff --git a/libc/src/fenv/feraiseexcept.cpp b/libc/src/fenv/feraiseexcept.cpp
--- a/libc/src/fenv/feraiseexcept.cpp
+++ b/libc/src/fenv/feraiseexcept.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/feraiseexcept.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 namespace __llvm_libc {
 
diff --git a/libc/src/fenv/fesetenv.cpp b/libc/src/fenv/fesetenv.cpp
--- a/libc/src/fenv/fesetenv.cpp
+++ b/libc/src/fenv/fesetenv.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/fesetenv.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 namespace __llvm_libc {
 
diff --git a/libc/src/fenv/fesetexceptflag.cpp b/libc/src/fenv/fesetexceptflag.cpp
--- a/libc/src/fenv/fesetexceptflag.cpp
+++ b/libc/src/fenv/fesetexceptflag.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/fesetexceptflag.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 #include <fenv.h>
 
diff --git a/libc/src/fenv/fesetround.cpp b/libc/src/fenv/fesetround.cpp
--- a/libc/src/fenv/fesetround.cpp
+++ b/libc/src/fenv/fesetround.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/fesetround.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 namespace __llvm_libc {
 
diff --git a/libc/src/fenv/fetestexcept.cpp b/libc/src/fenv/fetestexcept.cpp
--- a/libc/src/fenv/fetestexcept.cpp
+++ b/libc/src/fenv/fetestexcept.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/fetestexcept.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 namespace __llvm_libc {
 
diff --git a/libc/src/fenv/feupdateenv.cpp b/libc/src/fenv/feupdateenv.cpp
--- a/libc/src/fenv/feupdateenv.cpp
+++ b/libc/src/fenv/feupdateenv.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/feupdateenv.h"
 #include "src/__support/common.h"
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 
 #include <fenv.h>
 
diff --git a/libc/test/src/fenv/enabled_exceptions_test.cpp b/libc/test/src/fenv/enabled_exceptions_test.cpp
--- a/libc/test/src/fenv/enabled_exceptions_test.cpp
+++ b/libc/test/src/fenv/enabled_exceptions_test.cpp
@@ -10,7 +10,7 @@
 #include "src/fenv/feraiseexcept.h"
 #include "src/fenv/fetestexcept.h"
 
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #include "utils/FPUtil/TestHelpers.h"
 #include "utils/UnitTest/Test.h"
 
diff --git a/libc/test/src/fenv/exception_flags_test.cpp b/libc/test/src/fenv/exception_flags_test.cpp
--- a/libc/test/src/fenv/exception_flags_test.cpp
+++ b/libc/test/src/fenv/exception_flags_test.cpp
@@ -9,7 +9,7 @@
 #include "src/fenv/fegetexceptflag.h"
 #include "src/fenv/fesetexceptflag.h"
 
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #include "utils/UnitTest/Test.h"
 
 #include <fenv.h>
diff --git a/libc/test/src/fenv/exception_status_test.cpp b/libc/test/src/fenv/exception_status_test.cpp
--- a/libc/test/src/fenv/exception_status_test.cpp
+++ b/libc/test/src/fenv/exception_status_test.cpp
@@ -10,7 +10,7 @@
 #include "src/fenv/feraiseexcept.h"
 #include "src/fenv/fetestexcept.h"
 
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #include "utils/UnitTest/Test.h"
 
 #include <fenv.h>
diff --git a/libc/test/src/fenv/feclearexcept_test.cpp b/libc/test/src/fenv/feclearexcept_test.cpp
--- a/libc/test/src/fenv/feclearexcept_test.cpp
+++ b/libc/test/src/fenv/feclearexcept_test.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/feclearexcept.h"
 
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #include "utils/UnitTest/Test.h"
 
 #include <fenv.h>
diff --git a/libc/test/src/fenv/feholdexcept_test.cpp b/libc/test/src/fenv/feholdexcept_test.cpp
--- a/libc/test/src/fenv/feholdexcept_test.cpp
+++ b/libc/test/src/fenv/feholdexcept_test.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/feholdexcept.h"
 
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #include "utils/FPUtil/TestHelpers.h"
 #include "utils/UnitTest/Test.h"
 
diff --git a/libc/test/src/fenv/feupdateenv_test.cpp b/libc/test/src/fenv/feupdateenv_test.cpp
--- a/libc/test/src/fenv/feupdateenv_test.cpp
+++ b/libc/test/src/fenv/feupdateenv_test.cpp
@@ -8,7 +8,7 @@
 
 #include "src/fenv/feupdateenv.h"
 
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #include "utils/UnitTest/Test.h"
 
 #include <fenv.h>
diff --git a/libc/test/src/fenv/getenv_and_setenv_test.cpp b/libc/test/src/fenv/getenv_and_setenv_test.cpp
--- a/libc/test/src/fenv/getenv_and_setenv_test.cpp
+++ b/libc/test/src/fenv/getenv_and_setenv_test.cpp
@@ -9,7 +9,7 @@
 #include "src/fenv/fegetenv.h"
 #include "src/fenv/fesetenv.h"
 
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #include "utils/UnitTest/Test.h"
 
 #include <fenv.h>
diff --git a/libc/test/src/math/RIntTest.h b/libc/test/src/math/RIntTest.h
--- a/libc/test/src/math/RIntTest.h
+++ b/libc/test/src/math/RIntTest.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_LIBC_TEST_SRC_MATH_RINTTEST_H
 #define LLVM_LIBC_TEST_SRC_MATH_RINTTEST_H
 
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #include "utils/FPUtil/FPBits.h"
 #include "utils/FPUtil/TestHelpers.h"
 #include "utils/MPFRWrapper/MPFRUtils.h"
diff --git a/libc/test/src/math/RoundToIntegerTest.h b/libc/test/src/math/RoundToIntegerTest.h
--- a/libc/test/src/math/RoundToIntegerTest.h
+++ b/libc/test/src/math/RoundToIntegerTest.h
@@ -18,7 +18,7 @@
 #include <errno.h>
 #endif
 #if math_errhandling & MATH_ERREXCEPT
-#include "utils/FPUtil/FEnv.h"
+#include "utils/FPUtil/FEnvUtils.h"
 #endif
 
 namespace mpfr = __llvm_libc::testing::mpfr;
diff --git a/libc/utils/FPUtil/CMakeLists.txt b/libc/utils/FPUtil/CMakeLists.txt
--- a/libc/utils/FPUtil/CMakeLists.txt
+++ b/libc/utils/FPUtil/CMakeLists.txt
@@ -5,9 +5,9 @@
 endif()
 
 if(EXISTS ${LIBC_TARGET_ARCHITECTURE})
-  set(FENV_IMPL ${LIBC_TARGET_ARCHITECTURE}/FEnv.h)
+  set(FENV_IMPL ${LIBC_TARGET_ARCHITECTURE}/FEnvImpl.h)
 else()
-  set(FENV_IMPL DummyFEnv.h)
+  set(FENV_IMPL DummyFEnvImpl.h)
 endif()
 
 add_header_library(
@@ -17,7 +17,7 @@
     ${FENV_IMPL}
     BasicOperations.h
     DivisionAndRemainderOperations.h
-    FEnv.h
+    FEnvUtils.h
     FloatProperties.h
     FPBits.h
     BasicOperations.h
diff --git a/libc/utils/FPUtil/DummyFEnv.h b/libc/utils/FPUtil/DummyFEnvImpl.h
rename from libc/utils/FPUtil/DummyFEnv.h
rename to libc/utils/FPUtil/DummyFEnvImpl.h
--- a/libc/utils/FPUtil/DummyFEnv.h
+++ b/libc/utils/FPUtil/DummyFEnvImpl.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_LIBC_UTILS_FPUTIL_DUMMY_FENV_H
-#define LLVM_LIBC_UTILS_FPUTIL_DUMMY_FENV_H
+#ifndef LLVM_LIBC_UTILS_FPUTIL_DUMMY_FENVIMPL_H
+#define LLVM_LIBC_UTILS_FPUTIL_DUMMY_FENVIMPL_H
 
 #include <fenv.h>
 #include <math.h>
@@ -36,4 +36,4 @@
 } // namespace fputil
 } // namespace __llvm_libc
 
-#endif // LLVM_LIBC_UTILS_FPUTIL_DUMMY_FENV_H
+#endif // LLVM_LIBC_UTILS_FPUTIL_DUMMY_FENVIMPL_H
diff --git a/libc/utils/FPUtil/FEnv.h b/libc/utils/FPUtil/FEnvUtils.h
rename from libc/utils/FPUtil/FEnv.h
rename to libc/utils/FPUtil/FEnvUtils.h
--- a/libc/utils/FPUtil/FEnv.h
+++ b/libc/utils/FPUtil/FEnvUtils.h
@@ -6,15 +6,15 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_LIBC_UTILS_FPUTIL_FENV_H
-#define LLVM_LIBC_UTILS_FPUTIL_FENV_H
+#ifndef LLVM_LIBC_UTILS_FPUTIL_FENVUTILS_H
+#define LLVM_LIBC_UTILS_FPUTIL_FENVUTILS_H
 
 #ifdef __x86_64__
-#include "x86_64/FEnv.h"
+#include "x86_64/FEnvImpl.h"
 #elif defined(__aarch64__)
-#include "aarch64/FEnv.h"
+#include "aarch64/FEnvImpl.h"
 #else
-#include "DummyFEnv.h"
+#include "DummyFEnvImpl.h"
 #endif
 
-#endif // LLVM_LIBC_UTILS_FPUTIL_FP_BITS_H
+#endif // LLVM_LIBC_UTILS_FPUTIL_FENVUTILS_H
diff --git a/libc/utils/FPUtil/NearestIntegerOperations.h b/libc/utils/FPUtil/NearestIntegerOperations.h
--- a/libc/utils/FPUtil/NearestIntegerOperations.h
+++ b/libc/utils/FPUtil/NearestIntegerOperations.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_LIBC_UTILS_FPUTIL_NEAREST_INTEGER_OPERATIONS_H
 #define LLVM_LIBC_UTILS_FPUTIL_NEAREST_INTEGER_OPERATIONS_H
 
-#include "FEnv.h"
+#include "FEnvUtils.h"
 #include "FPBits.h"
 
 #include "utils/CPP/TypeTraits.h"
diff --git a/libc/utils/FPUtil/aarch64/FEnv.h b/libc/utils/FPUtil/aarch64/FEnvImpl.h
rename from libc/utils/FPUtil/aarch64/FEnv.h
rename to libc/utils/FPUtil/aarch64/FEnvImpl.h
--- a/libc/utils/FPUtil/aarch64/FEnv.h
+++ b/libc/utils/FPUtil/aarch64/FEnvImpl.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_LIBC_UTILS_FPUTIL_AARCH64_FENV_H
-#define LLVM_LIBC_UTILS_FPUTIL_AARCH64_FENV_H
+#ifndef LLVM_LIBC_UTILS_FPUTIL_AARCH64_FENVIMPL_H
+#define LLVM_LIBC_UTILS_FPUTIL_AARCH64_FENVIMPL_H
 
 #include <arm_acle.h>
 #include <fenv.h>
@@ -232,4 +232,4 @@
 } // namespace fputil
 } // namespace __llvm_libc
 
-#endif // LLVM_LIBC_UTILS_FPUTIL_AARCH64_FENV_H
+#endif // LLVM_LIBC_UTILS_FPUTIL_AARCH64_FENVIMPL_H
diff --git a/libc/utils/FPUtil/x86_64/FEnv.h b/libc/utils/FPUtil/x86_64/FEnvImpl.h
rename from libc/utils/FPUtil/x86_64/FEnv.h
rename to libc/utils/FPUtil/x86_64/FEnvImpl.h
--- a/libc/utils/FPUtil/x86_64/FEnv.h
+++ b/libc/utils/FPUtil/x86_64/FEnvImpl.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_LIBC_UTILS_FPUTIL_X86_64_FENV_H
-#define LLVM_LIBC_UTILS_FPUTIL_X86_64_FENV_H
+#ifndef LLVM_LIBC_UTILS_FPUTIL_X86_64_FENVIMPL_H
+#define LLVM_LIBC_UTILS_FPUTIL_X86_64_FENVIMPL_H
 
 #include <fenv.h>
 #include <stdint.h>
@@ -370,4 +370,4 @@
 } // namespace fputil
 } // namespace __llvm_libc
 
-#endif // LLVM_LIBC_UTILS_FPUTIL_X86_64_FENV_H
+#endif // LLVM_LIBC_UTILS_FPUTIL_X86_64_FENVIMPL_H