98 lines
3.4 KiB
C++
98 lines
3.4 KiB
C++
//===-- Unittests for atan2f ----------------------------------------------===//
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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/FPUtil/FPBits.h"
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#include "src/errno/libc_errno.h"
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#include "src/math/atan2f.h"
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#include "test/UnitTest/FPMatcher.h"
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#include "test/UnitTest/Test.h"
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using LlvmLibcAtan2fTest = LIBC_NAMESPACE::testing::FPTest<float>;
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TEST_F(LlvmLibcAtan2fTest, SpecialNumbers) {
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LIBC_NAMESPACE::libc_errno = 0;
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// TODO: Strengthen errno,exception checks and remove these assert macros
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// after new matchers/test fixtures are added see:
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// https://github.com/llvm/llvm-project/issues/90653.
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LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
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EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::atan2f(aNaN, zero));
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// TODO: Uncomment these checks later, RoundingMode affects running
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// tests in this way https://github.com/llvm/llvm-project/issues/90653.
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// EXPECT_FP_EXCEPTION(0);
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EXPECT_MATH_ERRNO(0);
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LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
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EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::atan2f(1.0f, aNaN));
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// See above TODO
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// EXPECT_FP_EXCEPTION(0);
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EXPECT_MATH_ERRNO(0);
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LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
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EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::atan2f(zero, zero));
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// See above TODO
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// EXPECT_FP_EXCEPTION(0);
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EXPECT_MATH_ERRNO(0);
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LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
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EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::atan2f(-0.0f, zero));
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// See above TODO
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// EXPECT_FP_EXCEPTION(0);
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EXPECT_MATH_ERRNO(0);
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LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
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EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::atan2f(1.0f, inf));
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// See above TODO
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// EXPECT_FP_EXCEPTION(0);
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EXPECT_MATH_ERRNO(0);
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LIBC_NAMESPACE::fputil::clear_except(FE_ALL_EXCEPT);
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EXPECT_FP_EQ_ALL_ROUNDING(-0.0f, LIBC_NAMESPACE::atan2f(-1.0f, inf));
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// See above TODO
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// EXPECT_FP_EXCEPTION(0);
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EXPECT_MATH_ERRNO(0);
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}
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#ifdef LIBC_TEST_FTZ_DAZ
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using namespace LIBC_NAMESPACE::testing;
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TEST_F(LlvmLibcAtan2fTest, FTZMode) {
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ModifyMXCSR mxcsr(FTZ);
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EXPECT_FP_EQ(0x1.921fb6p-1f,
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LIBC_NAMESPACE::atan2f(min_denormal, min_denormal));
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EXPECT_FP_EQ(0x1.000002p-23f,
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LIBC_NAMESPACE::atan2f(min_denormal, max_denormal));
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EXPECT_FP_EQ(0x1.921fb4p0f,
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LIBC_NAMESPACE::atan2f(max_denormal, min_denormal));
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EXPECT_FP_EQ(0x1.921fb6p-1f,
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LIBC_NAMESPACE::atan2f(max_denormal, max_denormal));
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}
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TEST_F(LlvmLibcAtan2fTest, DAZMode) {
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ModifyMXCSR mxcsr(DAZ);
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atan2f(min_denormal, min_denormal));
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atan2f(min_denormal, max_denormal));
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atan2f(max_denormal, min_denormal));
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atan2f(max_denormal, max_denormal));
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}
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TEST_F(LlvmLibcAtan2fTest, FTZDAZMode) {
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ModifyMXCSR mxcsr(FTZ | DAZ);
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atan2f(min_denormal, min_denormal));
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atan2f(min_denormal, max_denormal));
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atan2f(max_denormal, min_denormal));
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EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::atan2f(max_denormal, max_denormal));
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}
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#endif
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