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//===-- Unittests for coshf -----------------------------------------------===//
//
// 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 "hdr/math_macros.h"
#include "src/__support/CPP/array.h"
#include "src/__support/FPUtil/FPBits.h"
#include "src/errno/libc_errno.h"
#include "src/math/coshf.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
#include "utils/MPFRWrapper/MPFRUtils.h"
#include <errno.h>
#include <stdint.h>
using LlvmLibcCoshfTest = LIBC_NAMESPACE::testing::FPTest<float>;
namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
TEST_F(LlvmLibcCoshfTest, SpecialNumbers) {
LIBC_NAMESPACE::libc_errno = 0;
EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::coshf(aNaN));
EXPECT_MATH_ERRNO(0);
EXPECT_FP_EQ(inf, LIBC_NAMESPACE::coshf(inf));
EXPECT_MATH_ERRNO(0);
EXPECT_FP_EQ(inf, LIBC_NAMESPACE::coshf(neg_inf));
EXPECT_MATH_ERRNO(0);
EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::coshf(0.0f));
EXPECT_MATH_ERRNO(0);
EXPECT_FP_EQ(1.0f, LIBC_NAMESPACE::coshf(-0.0f));
EXPECT_MATH_ERRNO(0);
}
TEST_F(LlvmLibcCoshfTest, Overflow) {
LIBC_NAMESPACE::libc_errno = 0;
EXPECT_FP_EQ_WITH_EXCEPTION(
inf, LIBC_NAMESPACE::coshf(FPBits(0x7f7fffffU).get_val()), FE_OVERFLOW);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(
inf, LIBC_NAMESPACE::coshf(FPBits(0x42cffff8U).get_val()), FE_OVERFLOW);
EXPECT_MATH_ERRNO(ERANGE);
EXPECT_FP_EQ_WITH_EXCEPTION(
inf, LIBC_NAMESPACE::coshf(FPBits(0x42d00008U).get_val()), FE_OVERFLOW);
EXPECT_MATH_ERRNO(ERANGE);
}
TEST_F(LlvmLibcCoshfTest, InFloatRange) {
constexpr uint32_t COUNT = 100'000;
constexpr uint32_t STEP = UINT32_MAX / COUNT;
for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
float x = FPBits(v).get_val();
if (isnan(x) || isinf(x))
continue;
ASSERT_MPFR_MATCH(mpfr::Operation::Cosh, x, LIBC_NAMESPACE::coshf(x), 0.5);
}
}
TEST_F(LlvmLibcCoshfTest, SmallValues) {
float x = FPBits(0x17800000U).get_val();
float result = LIBC_NAMESPACE::coshf(x);
EXPECT_MPFR_MATCH(mpfr::Operation::Cosh, x, result, 0.5);
EXPECT_FP_EQ(1.0f, result);
x = FPBits(0x0040000U).get_val();
result = LIBC_NAMESPACE::coshf(x);
EXPECT_MPFR_MATCH(mpfr::Operation::Cosh, x, result, 0.5);
EXPECT_FP_EQ(1.0f, result);
}
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