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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
//
//===----------------------------------------------------------------------===//
#undef LIBC_MATH_USE_SYSTEM_FENV
#include "hdr/types/fenv_t.h"
#include "src/fenv/fegetenv.h"
#include "src/fenv/fegetround.h"
#include "src/fenv/fesetenv.h"
#include "src/fenv/fesetround.h"
#include "src/__support/FPUtil/FEnvImpl.h"
#include "src/__support/macros/properties/os.h"
#include "test/UnitTest/FEnvSafeTest.h"
#include "test/UnitTest/Test.h"
#include "excepts.h"
using LlvmLibcFEnvTest = LIBC_NAMESPACE::testing::FEnvSafeTest;
TEST_F(LlvmLibcFEnvTest, GetEnvAndSetEnv) {
// We will disable all exceptions to prevent invocation of the exception
// handler.
LIBC_NAMESPACE::fputil::disable_except(FE_ALL_EXCEPT);
for (int e : EXCEPTS) {
LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
// Save the cleared environment.
fenv_t env;
ASSERT_EQ(LIBC_NAMESPACE::fegetenv(&env), 0);
LIBC_NAMESPACE::fputil::raise_except(e);
// Make sure that the exception is raised.
ASSERT_NE(LIBC_NAMESPACE::fputil::test_except(FE_ALL_EXCEPT) & e, 0);
ASSERT_EQ(LIBC_NAMESPACE::fesetenv(&env), 0);
ASSERT_EQ(LIBC_NAMESPACE::fputil::test_except(FE_ALL_EXCEPT) & e, 0);
}
}
TEST_F(LlvmLibcFEnvTest, Set_FE_DFL_ENV) {
// We will disable all exceptions to prevent invocation of the exception
// handler.
LIBC_NAMESPACE::fputil::disable_except(FE_ALL_EXCEPT);
int excepts[] = {FE_DIVBYZERO, FE_INVALID, FE_INEXACT, FE_OVERFLOW,
FE_UNDERFLOW};
for (int e : excepts) {
LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
// Save the cleared environment.
fenv_t env;
ASSERT_EQ(LIBC_NAMESPACE::fegetenv(&env), 0);
LIBC_NAMESPACE::fputil::raise_except(e);
// Make sure that the exception is raised.
ASSERT_NE(LIBC_NAMESPACE::fputil::test_except(FE_ALL_EXCEPT) & e, 0);
ASSERT_EQ(LIBC_NAMESPACE::fesetenv(FE_DFL_ENV), 0);
// Setting the default env should clear all exceptions.
ASSERT_EQ(LIBC_NAMESPACE::fputil::test_except(FE_ALL_EXCEPT) & e, 0);
}
ASSERT_EQ(LIBC_NAMESPACE::fesetround(FE_DOWNWARD), 0);
ASSERT_EQ(LIBC_NAMESPACE::fesetenv(FE_DFL_ENV), 0);
// Setting the default env should set rounding mode to FE_TONEAREST.
int rm = LIBC_NAMESPACE::fegetround();
EXPECT_EQ(rm, FE_TONEAREST);
}
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