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//===-- Unittests for fegetenv and fesetenv -------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "src/fenv/fegetenv.h"
#include "src/fenv/fegetround.h"
#include "src/fenv/fesetenv.h"
#include "src/fenv/fesetround.h"
#include "src/__support/FPUtil/FEnvUtils.h"
#include "utils/UnitTest/Test.h"
#include <fenv.h>
TEST(LlvmLibcFenvTest, GetEnvAndSetEnv) {
// We will disable all exceptions to prevent invocation of the exception
// handler.
__llvm_libc::fputil::disableExcept(FE_ALL_EXCEPT);
int excepts[] = {FE_DIVBYZERO, FE_INVALID, FE_INEXACT, FE_OVERFLOW,
FE_UNDERFLOW};
for (int e : excepts) {
__llvm_libc::fputil::clearExcept(FE_ALL_EXCEPT);
// Save the cleared environment.
fenv_t env;
ASSERT_EQ(__llvm_libc::fegetenv(&env), 0);
__llvm_libc::fputil::raiseExcept(e);
// Make sure that the exception is raised.
ASSERT_NE(__llvm_libc::fputil::testExcept(FE_ALL_EXCEPT) & e, 0);
ASSERT_EQ(__llvm_libc::fesetenv(&env), 0);
ASSERT_EQ(__llvm_libc::fputil::testExcept(FE_ALL_EXCEPT) & e, 0);
}
}
TEST(LlvmLibcFenvTest, Set_FE_DFL_ENV) {
// We will disable all exceptions to prevent invocation of the exception
// handler.
__llvm_libc::fputil::disableExcept(FE_ALL_EXCEPT);
int excepts[] = {FE_DIVBYZERO, FE_INVALID, FE_INEXACT, FE_OVERFLOW,
FE_UNDERFLOW};
for (int e : excepts) {
__llvm_libc::fputil::clearExcept(FE_ALL_EXCEPT);
// Save the cleared environment.
fenv_t env;
ASSERT_EQ(__llvm_libc::fegetenv(&env), 0);
__llvm_libc::fputil::raiseExcept(e);
// Make sure that the exception is raised.
ASSERT_NE(__llvm_libc::fputil::testExcept(FE_ALL_EXCEPT) & e, 0);
ASSERT_EQ(__llvm_libc::fesetenv(FE_DFL_ENV), 0);
// Setting the default env should clear all exceptions.
ASSERT_EQ(__llvm_libc::fputil::testExcept(FE_ALL_EXCEPT) & e, 0);
}
ASSERT_EQ(__llvm_libc::fesetround(FE_DOWNWARD), 0);
ASSERT_EQ(__llvm_libc::fesetenv(FE_DFL_ENV), 0);
// Setting the default env should set rounding mode to FE_TONEAREST.
int rm = __llvm_libc::fegetround();
EXPECT_EQ(rm, FE_TONEAREST);
}
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