129 lines
4.3 KiB
C++
129 lines
4.3 KiB
C++
//===-- Unittests for sincosf ---------------------------------------------===//
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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 "src/math/sincosf.h"
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#include "test/src/math/sdcomp26094.h"
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#include "utils/CPP/Array.h"
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#include "utils/FPUtil/BitPatterns.h"
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#include "utils/FPUtil/ClassificationFunctions.h"
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#include "utils/FPUtil/FloatOperations.h"
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#include "utils/FPUtil/FloatProperties.h"
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#include "utils/MPFRWrapper/MPFRUtils.h"
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#include "utils/UnitTest/Test.h"
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#include <math.h>
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#include <errno.h>
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#include <stdint.h>
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using __llvm_libc::fputil::isNegativeQuietNaN;
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using __llvm_libc::fputil::isQuietNaN;
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using __llvm_libc::fputil::valueAsBits;
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using __llvm_libc::fputil::valueFromBits;
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using BitPatterns = __llvm_libc::fputil::BitPatterns<float>;
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using __llvm_libc::testing::sdcomp26094Values;
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namespace mpfr = __llvm_libc::testing::mpfr;
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TEST(LlvmLibcSinCosfTest, SpecialNumbers) {
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errno = 0;
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float sin, cos;
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__llvm_libc::sincosf(valueFromBits(BitPatterns::aQuietNaN), &sin, &cos);
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EXPECT_TRUE(isQuietNaN(cos));
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EXPECT_TRUE(isQuietNaN(sin));
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EXPECT_EQ(errno, 0);
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__llvm_libc::sincosf(valueFromBits(BitPatterns::aNegativeQuietNaN), &sin,
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&cos);
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EXPECT_TRUE(isNegativeQuietNaN(cos));
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EXPECT_TRUE(isNegativeQuietNaN(sin));
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EXPECT_EQ(errno, 0);
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__llvm_libc::sincosf(valueFromBits(BitPatterns::aSignallingNaN), &sin, &cos);
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EXPECT_TRUE(isQuietNaN(cos));
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EXPECT_TRUE(isQuietNaN(sin));
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EXPECT_EQ(errno, 0);
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__llvm_libc::sincosf(valueFromBits(BitPatterns::aNegativeSignallingNaN), &sin,
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&cos);
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EXPECT_TRUE(isNegativeQuietNaN(cos));
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EXPECT_TRUE(isNegativeQuietNaN(sin));
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EXPECT_EQ(errno, 0);
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__llvm_libc::sincosf(valueFromBits(BitPatterns::zero), &sin, &cos);
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EXPECT_EQ(BitPatterns::one, valueAsBits(cos));
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EXPECT_EQ(BitPatterns::zero, valueAsBits(sin));
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EXPECT_EQ(errno, 0);
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__llvm_libc::sincosf(valueFromBits(BitPatterns::negZero), &sin, &cos);
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EXPECT_EQ(BitPatterns::one, valueAsBits(cos));
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EXPECT_EQ(BitPatterns::negZero, valueAsBits(sin));
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EXPECT_EQ(errno, 0);
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errno = 0;
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__llvm_libc::sincosf(valueFromBits(BitPatterns::inf), &sin, &cos);
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EXPECT_TRUE(isQuietNaN(cos));
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EXPECT_TRUE(isQuietNaN(sin));
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EXPECT_EQ(errno, EDOM);
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errno = 0;
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__llvm_libc::sincosf(valueFromBits(BitPatterns::negInf), &sin, &cos);
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EXPECT_TRUE(isQuietNaN(cos));
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EXPECT_TRUE(isQuietNaN(sin));
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EXPECT_EQ(errno, EDOM);
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}
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TEST(LlvmLibcSinCosfTest, InFloatRange) {
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constexpr uint32_t count = 1000000;
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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 = valueFromBits(v);
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if (isnan(x) || isinf(x))
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continue;
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float sin, cos;
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__llvm_libc::sincosf(x, &sin, &cos);
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ASSERT_MPFR_MATCH(mpfr::Operation::Cos, x, cos, 1.0);
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ASSERT_MPFR_MATCH(mpfr::Operation::Sin, x, sin, 1.0);
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}
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}
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// For small values, cos(x) is 1 and sin(x) is x.
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TEST(LlvmLibcSinCosfTest, SmallValues) {
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uint32_t bits = 0x17800000;
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float x = valueFromBits(bits);
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float result_cos, result_sin;
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__llvm_libc::sincosf(x, &result_sin, &result_cos);
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EXPECT_MPFR_MATCH(mpfr::Operation::Cos, x, result_cos, 1.0);
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EXPECT_MPFR_MATCH(mpfr::Operation::Sin, x, result_sin, 1.0);
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EXPECT_EQ(BitPatterns::one, valueAsBits(result_cos));
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EXPECT_EQ(bits, valueAsBits(result_sin));
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bits = 0x00400000;
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x = valueFromBits(bits);
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__llvm_libc::sincosf(x, &result_sin, &result_cos);
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EXPECT_MPFR_MATCH(mpfr::Operation::Cos, x, result_cos, 1.0);
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EXPECT_MPFR_MATCH(mpfr::Operation::Sin, x, result_sin, 1.0);
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EXPECT_EQ(BitPatterns::one, valueAsBits(result_cos));
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EXPECT_EQ(bits, valueAsBits(result_sin));
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}
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// SDCOMP-26094: check sinf in the cases for which the range reducer
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// returns values furthest beyond its nominal upper bound of pi/4.
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TEST(LlvmLibcSinCosfTest, SDCOMP_26094) {
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for (uint32_t v : sdcomp26094Values) {
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float x = valueFromBits(v);
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float sin, cos;
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__llvm_libc::sincosf(x, &sin, &cos);
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EXPECT_MPFR_MATCH(mpfr::Operation::Cos, x, cos, 1.0);
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EXPECT_MPFR_MATCH(mpfr::Operation::Sin, x, sin, 1.0);
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}
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}
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