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//===-- Unittests for feclearexcept, feraiseexcept and fetestexpect -------===//
//
// 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/feclearexcept.h"
#include "src/fenv/feraiseexcept.h"
#include "src/fenv/fetestexcept.h"
#include "src/__support/FPUtil/FEnvUtils.h"
#include "utils/UnitTest/Test.h"
#include <fenv.h>
TEST(LlvmLibcExceptionStatusTest, RaiseAndTest) {
// This test raises a set of exceptions and checks that the exception
// status flags are updated. The intention is really not to invoke the
// exception handler. Hence, we will disable all exceptions at the
// beginning.
__llvm_libc::fputil::disableExcept(FE_ALL_EXCEPT);
int excepts[] = {FE_DIVBYZERO, FE_INVALID, FE_INEXACT, FE_OVERFLOW,
FE_UNDERFLOW};
constexpr int allExcepts =
FE_DIVBYZERO | FE_INVALID | FE_INEXACT | FE_OVERFLOW | FE_UNDERFLOW;
for (int e : excepts) {
int r = __llvm_libc::feraiseexcept(e);
ASSERT_EQ(r, 0);
int s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, e);
r = __llvm_libc::feclearexcept(e);
ASSERT_EQ(r, 0);
s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, 0);
}
for (int e1 : excepts) {
for (int e2 : excepts) {
int e = e1 | e2;
int r = __llvm_libc::feraiseexcept(e);
ASSERT_EQ(r, 0);
int s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, e);
r = __llvm_libc::feclearexcept(e);
ASSERT_EQ(r, 0);
s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, 0);
}
}
for (int e1 : excepts) {
for (int e2 : excepts) {
for (int e3 : excepts) {
int e = e1 | e2 | e3;
int r = __llvm_libc::feraiseexcept(e);
ASSERT_EQ(r, 0);
int s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, e);
r = __llvm_libc::feclearexcept(e);
ASSERT_EQ(r, 0);
s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, 0);
}
}
}
for (int e1 : excepts) {
for (int e2 : excepts) {
for (int e3 : excepts) {
for (int e4 : excepts) {
int e = e1 | e2 | e3 | e4;
int r = __llvm_libc::feraiseexcept(e);
ASSERT_EQ(r, 0);
int s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, e);
r = __llvm_libc::feclearexcept(e);
ASSERT_EQ(r, 0);
s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, 0);
}
}
}
}
for (int e1 : excepts) {
for (int e2 : excepts) {
for (int e3 : excepts) {
for (int e4 : excepts) {
for (int e5 : excepts) {
int e = e1 | e2 | e3 | e4 | e5;
int r = __llvm_libc::feraiseexcept(e);
ASSERT_EQ(r, 0);
int s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, e);
r = __llvm_libc::feclearexcept(e);
ASSERT_EQ(r, 0);
s = __llvm_libc::fetestexcept(e);
ASSERT_EQ(s, 0);
}
}
}
}
}
int r = __llvm_libc::feraiseexcept(allExcepts);
ASSERT_EQ(r, 0);
int s = __llvm_libc::fetestexcept(allExcepts);
ASSERT_EQ(s, allExcepts);
}
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