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//===-- Unittests for feenableexcept -------------------------------------===//
//
// 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/__support/macros/properties/architectures.h"
#include "src/fenv/fedisableexcept.h"
#include "src/fenv/feenableexcept.h"
#include "src/fenv/fegetexcept.h"
#include "test/UnitTest/Test.h"
#include <fenv.h>
TEST(LlvmLibcFEnvTest, EnableTest) {
#if defined(LIBC_TARGET_ARCH_IS_ANY_ARM) || defined(LIBC_TARGET_ARCH_IS_RISCV64)
// Few Arm HW implementations do not trap exceptions. We skip this test
// completely on such HW.
//
// Whether HW supports trapping exceptions or not is deduced by enabling an
// exception and reading back to see if the exception got enabled. If the
// exception did not get enabled, then it means that the HW does not support
// trapping exceptions.
__llvm_libc::fedisableexcept(FE_ALL_EXCEPT);
__llvm_libc::feenableexcept(FE_DIVBYZERO);
if (__llvm_libc::fegetexcept() == 0)
return;
#endif // Architectures where exception trapping is not supported
int excepts[] = {FE_DIVBYZERO, FE_INVALID, FE_INEXACT, FE_OVERFLOW,
FE_UNDERFLOW};
__llvm_libc::fedisableexcept(FE_ALL_EXCEPT);
ASSERT_EQ(0, __llvm_libc::fegetexcept());
for (int e : excepts) {
__llvm_libc::feenableexcept(e);
ASSERT_EQ(e, __llvm_libc::fegetexcept());
__llvm_libc::fedisableexcept(e);
}
for (int e1 : excepts) {
for (int e2 : excepts) {
__llvm_libc::feenableexcept(e1 | e2);
ASSERT_EQ(e1 | e2, __llvm_libc::fegetexcept());
__llvm_libc::fedisableexcept(e1 | e2);
}
}
for (int e1 : excepts) {
for (int e2 : excepts) {
for (int e3 : excepts) {
__llvm_libc::feenableexcept(e1 | e2 | e3);
ASSERT_EQ(e1 | e2 | e3, __llvm_libc::fegetexcept());
__llvm_libc::fedisableexcept(e1 | e2 | e3);
}
}
}
for (int e1 : excepts) {
for (int e2 : excepts) {
for (int e3 : excepts) {
for (int e4 : excepts) {
__llvm_libc::feenableexcept(e1 | e2 | e3 | e4);
ASSERT_EQ(e1 | e2 | e3 | e4, __llvm_libc::fegetexcept());
__llvm_libc::fedisableexcept(e1 | e2 | e3 | e4);
}
}
}
}
for (int e1 : excepts) {
for (int e2 : excepts) {
for (int e3 : excepts) {
for (int e4 : excepts) {
for (int e5 : excepts) {
__llvm_libc::feenableexcept(e1 | e2 | e3 | e4 | e5);
ASSERT_EQ(e1 | e2 | e3 | e4 | e5, __llvm_libc::fegetexcept());
__llvm_libc::fedisableexcept(e1 | e2 | e3 | e4 | e5);
}
}
}
}
}
}
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