f0d05bb699
Fix signed zeros for acosf, acoshf, and atanf in FE_DOWNWARD mode. Reviewed By: sivachandra Differential Revision: https://reviews.llvm.org/D159476
110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
//===-- Unittests for atanhf ----------------------------------------------===//
|
|
//
|
|
// 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/FPUtil/FPBits.h"
|
|
#include "src/errno/libc_errno.h"
|
|
#include "src/math/atanhf.h"
|
|
#include "test/UnitTest/FPMatcher.h"
|
|
#include "test/UnitTest/Test.h"
|
|
#include "utils/MPFRWrapper/MPFRUtils.h"
|
|
#include <math.h>
|
|
|
|
#include <errno.h>
|
|
#include <stdint.h>
|
|
|
|
using FPBits = __llvm_libc::fputil::FPBits<float>;
|
|
|
|
namespace mpfr = __llvm_libc::testing::mpfr;
|
|
|
|
DECLARE_SPECIAL_CONSTANTS(float)
|
|
|
|
TEST(LlvmLibcAtanhfTest, SpecialNumbers) {
|
|
libc_errno = 0;
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(aNaN, __llvm_libc::atanhf(aNaN));
|
|
EXPECT_FP_EXCEPTION(0);
|
|
EXPECT_MATH_ERRNO(0);
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(0.0f, __llvm_libc::atanhf(0.0f));
|
|
EXPECT_FP_EXCEPTION(0);
|
|
EXPECT_MATH_ERRNO(0);
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, __llvm_libc::atanhf(-0.0f));
|
|
EXPECT_FP_EXCEPTION(0);
|
|
EXPECT_MATH_ERRNO(0);
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(inf, __llvm_libc::atanhf(1.0f));
|
|
EXPECT_FP_EXCEPTION(FE_DIVBYZERO);
|
|
EXPECT_MATH_ERRNO(ERANGE);
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(neg_inf, __llvm_libc::atanhf(-1.0f));
|
|
EXPECT_FP_EXCEPTION(FE_DIVBYZERO);
|
|
EXPECT_MATH_ERRNO(ERANGE);
|
|
|
|
auto bt = FPBits(1.0f);
|
|
bt.bits += 1;
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(aNaN, __llvm_libc::atanhf(bt.get_val()));
|
|
EXPECT_FP_EXCEPTION(FE_INVALID);
|
|
EXPECT_MATH_ERRNO(EDOM);
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
bt.set_sign(true);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(aNaN, __llvm_libc::atanhf(bt.get_val()));
|
|
EXPECT_FP_EXCEPTION(FE_INVALID);
|
|
EXPECT_MATH_ERRNO(EDOM);
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(aNaN, __llvm_libc::atanhf(2.0f));
|
|
EXPECT_FP_EXCEPTION(FE_INVALID);
|
|
EXPECT_MATH_ERRNO(EDOM);
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(aNaN, __llvm_libc::atanhf(-2.0f));
|
|
EXPECT_FP_EXCEPTION(FE_INVALID);
|
|
EXPECT_MATH_ERRNO(EDOM);
|
|
|
|
__llvm_libc::fputil::clear_except(FE_ALL_EXCEPT);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(aNaN, __llvm_libc::atanhf(inf));
|
|
EXPECT_FP_EXCEPTION(FE_INVALID);
|
|
EXPECT_MATH_ERRNO(EDOM);
|
|
|
|
bt.set_sign(true);
|
|
EXPECT_FP_EQ_ALL_ROUNDING(aNaN, __llvm_libc::atanhf(neg_inf));
|
|
EXPECT_FP_EXCEPTION(FE_INVALID);
|
|
EXPECT_MATH_ERRNO(EDOM);
|
|
}
|
|
|
|
TEST(LlvmLibcAtanhfTest, InFloatRange) {
|
|
constexpr uint32_t COUNT = 100'000;
|
|
const uint32_t STEP = FPBits(1.0f).uintval() / COUNT;
|
|
for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
|
|
float x = float(FPBits(v));
|
|
ASSERT_MPFR_MATCH(mpfr::Operation::Atanh, x, __llvm_libc::atanhf(x), 0.5);
|
|
ASSERT_MPFR_MATCH(mpfr::Operation::Atanh, -x, __llvm_libc::atanhf(-x), 0.5);
|
|
}
|
|
}
|
|
|
|
// For small values, atanh(x) is x.
|
|
TEST(LlvmLibcAtanhfTest, SmallValues) {
|
|
float x = float(FPBits(uint32_t(0x17800000)));
|
|
float result = __llvm_libc::atanhf(x);
|
|
EXPECT_MPFR_MATCH(mpfr::Operation::Atanh, x, result, 0.5);
|
|
EXPECT_FP_EQ(x, result);
|
|
|
|
x = float(FPBits(uint32_t(0x00400000)));
|
|
result = __llvm_libc::atanhf(x);
|
|
EXPECT_MPFR_MATCH(mpfr::Operation::Atanh, x, result, 0.5);
|
|
EXPECT_FP_EQ(x, result);
|
|
}
|