d87eea35fa
This is the first step in preparation for: https://discourse.llvm.org/t/rfc-make-clang-builtin-math-functions-constexpr-with-llvm-libc-to-support-c-23-constexpr-math-functions/86450
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
//===-- Unittests for sinhf -----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "hdr/math_macros.h"
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#include "src/__support/CPP/array.h"
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#include "src/__support/FPUtil/FPBits.h"
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#include "src/__support/libc_errno.h"
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#include "src/math/sinhf.h"
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#include "test/UnitTest/FPMatcher.h"
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#include "test/UnitTest/Test.h"
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#include "utils/MPFRWrapper/MPFRUtils.h"
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#include <stdint.h>
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using LlvmLibcSinhfTest = LIBC_NAMESPACE::testing::FPTest<float>;
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namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
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TEST_F(LlvmLibcSinhfTest, SpecialNumbers) {
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libc_errno = 0;
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EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::sinhf(aNaN));
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EXPECT_MATH_ERRNO(0);
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::sinhf(0.0f));
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EXPECT_MATH_ERRNO(0);
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EXPECT_FP_EQ(-0.0f, LIBC_NAMESPACE::sinhf(-0.0f));
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EXPECT_MATH_ERRNO(0);
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EXPECT_FP_EQ(inf, LIBC_NAMESPACE::sinhf(inf));
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EXPECT_MATH_ERRNO(0);
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EXPECT_FP_EQ(neg_inf, LIBC_NAMESPACE::sinhf(neg_inf));
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EXPECT_MATH_ERRNO(0);
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}
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TEST_F(LlvmLibcSinhfTest, InFloatRange) {
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constexpr uint32_t COUNT = 100'000;
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constexpr uint32_t STEP = UINT32_MAX / COUNT;
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for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
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float x = FPBits(v).get_val();
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if (FPBits(v).is_nan() || FPBits(v).is_inf())
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continue;
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ASSERT_MPFR_MATCH(mpfr::Operation::Sinh, x, LIBC_NAMESPACE::sinhf(x), 0.5);
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}
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}
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// For small values, sinh(x) is x.
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TEST_F(LlvmLibcSinhfTest, SmallValues) {
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float x = FPBits(uint32_t(0x17800000)).get_val();
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float result = LIBC_NAMESPACE::sinhf(x);
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EXPECT_MPFR_MATCH(mpfr::Operation::Sinh, x, result, 0.5);
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EXPECT_FP_EQ(x, result);
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x = FPBits(uint32_t(0x00400000)).get_val();
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result = LIBC_NAMESPACE::sinhf(x);
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EXPECT_MPFR_MATCH(mpfr::Operation::Sinh, x, result, 0.5);
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EXPECT_FP_EQ(x, result);
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}
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TEST_F(LlvmLibcSinhfTest, Overflow) {
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libc_errno = 0;
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EXPECT_FP_EQ_WITH_EXCEPTION(
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inf, LIBC_NAMESPACE::sinhf(FPBits(0x7f7fffffU).get_val()), FE_OVERFLOW);
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EXPECT_MATH_ERRNO(ERANGE);
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EXPECT_FP_EQ_WITH_EXCEPTION(
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inf, LIBC_NAMESPACE::sinhf(FPBits(0x42cffff8U).get_val()), FE_OVERFLOW);
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EXPECT_MATH_ERRNO(ERANGE);
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EXPECT_FP_EQ_WITH_EXCEPTION(
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inf, LIBC_NAMESPACE::sinhf(FPBits(0x42d00008U).get_val()), FE_OVERFLOW);
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EXPECT_MATH_ERRNO(ERANGE);
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}
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TEST_F(LlvmLibcSinhfTest, ExceptionalValues) {
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float x = FPBits(uint32_t(0x3a12'85ffU)).get_val();
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EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Sinh, x,
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LIBC_NAMESPACE::sinhf(x), 0.5);
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x = -FPBits(uint32_t(0x3a12'85ffU)).get_val();
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EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Sinh, x,
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LIBC_NAMESPACE::sinhf(x), 0.5);
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}
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