103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
//===-- Unittests for cosf ------------------------------------------------===//
|
|
//
|
|
// 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/math/cosf.h"
|
|
#include "test/src/math/sdcomp26094.h"
|
|
#include "utils/CPP/Array.h"
|
|
#include "utils/FPUtil/BitPatterns.h"
|
|
#include "utils/FPUtil/ClassificationFunctions.h"
|
|
#include "utils/FPUtil/FloatOperations.h"
|
|
#include "utils/FPUtil/FloatProperties.h"
|
|
#include "utils/MPFRWrapper/MPFRUtils.h"
|
|
#include "utils/UnitTest/Test.h"
|
|
#include <math.h>
|
|
|
|
#include <errno.h>
|
|
#include <stdint.h>
|
|
|
|
using __llvm_libc::fputil::isNegativeQuietNaN;
|
|
using __llvm_libc::fputil::isQuietNaN;
|
|
using __llvm_libc::fputil::valueAsBits;
|
|
using __llvm_libc::fputil::valueFromBits;
|
|
|
|
using BitPatterns = __llvm_libc::fputil::BitPatterns<float>;
|
|
|
|
using __llvm_libc::testing::sdcomp26094Values;
|
|
|
|
namespace mpfr = __llvm_libc::testing::mpfr;
|
|
|
|
TEST(LlvmLibcCosfTest, SpecialNumbers) {
|
|
errno = 0;
|
|
|
|
EXPECT_TRUE(
|
|
isQuietNaN(__llvm_libc::cosf(valueFromBits(BitPatterns::aQuietNaN))));
|
|
EXPECT_EQ(errno, 0);
|
|
|
|
EXPECT_TRUE(isNegativeQuietNaN(
|
|
__llvm_libc::cosf(valueFromBits(BitPatterns::aNegativeQuietNaN))));
|
|
EXPECT_EQ(errno, 0);
|
|
|
|
EXPECT_TRUE(isQuietNaN(
|
|
__llvm_libc::cosf(valueFromBits(BitPatterns::aSignallingNaN))));
|
|
EXPECT_EQ(errno, 0);
|
|
|
|
EXPECT_TRUE(isNegativeQuietNaN(
|
|
__llvm_libc::cosf(valueFromBits(BitPatterns::aNegativeSignallingNaN))));
|
|
EXPECT_EQ(errno, 0);
|
|
|
|
EXPECT_EQ(BitPatterns::one,
|
|
valueAsBits(__llvm_libc::cosf(valueFromBits(BitPatterns::zero))));
|
|
EXPECT_EQ(errno, 0);
|
|
|
|
EXPECT_EQ(BitPatterns::one, valueAsBits(__llvm_libc::cosf(
|
|
valueFromBits(BitPatterns::negZero))));
|
|
EXPECT_EQ(errno, 0);
|
|
|
|
errno = 0;
|
|
EXPECT_TRUE(isQuietNaN(__llvm_libc::cosf(valueFromBits(BitPatterns::inf))));
|
|
EXPECT_EQ(errno, EDOM);
|
|
|
|
errno = 0;
|
|
EXPECT_TRUE(
|
|
isQuietNaN(__llvm_libc::cosf(valueFromBits(BitPatterns::negInf))));
|
|
EXPECT_EQ(errno, EDOM);
|
|
}
|
|
|
|
TEST(LlvmLibcCosfTest, InFloatRange) {
|
|
constexpr uint32_t count = 1000000;
|
|
constexpr uint32_t step = UINT32_MAX / count;
|
|
for (uint32_t i = 0, v = 0; i <= count; ++i, v += step) {
|
|
float x = valueFromBits(v);
|
|
if (isnan(x) || isinf(x))
|
|
continue;
|
|
ASSERT_MPFR_MATCH(mpfr::Operation::Cos, x, __llvm_libc::cosf(x), 1.0);
|
|
}
|
|
}
|
|
|
|
// For small values, cos(x) is 1.
|
|
TEST(LlvmLibcCosfTest, SmallValues) {
|
|
float x = valueFromBits(0x17800000U);
|
|
float result = __llvm_libc::cosf(x);
|
|
EXPECT_MPFR_MATCH(mpfr::Operation::Cos, x, result, 1.0);
|
|
EXPECT_EQ(BitPatterns::one, valueAsBits(result));
|
|
|
|
x = valueFromBits(0x0040000U);
|
|
result = __llvm_libc::cosf(x);
|
|
EXPECT_MPFR_MATCH(mpfr::Operation::Cos, x, result, 1.0);
|
|
EXPECT_EQ(BitPatterns::one, valueAsBits(result));
|
|
}
|
|
|
|
// SDCOMP-26094: check cosf in the cases for which the range reducer
|
|
// returns values furthest beyond its nominal upper bound of pi/4.
|
|
TEST(LlvmLibcCosfTest, SDCOMP_26094) {
|
|
for (uint32_t v : sdcomp26094Values) {
|
|
float x = valueFromBits(v);
|
|
ASSERT_MPFR_MATCH(mpfr::Operation::Cos, x, __llvm_libc::cosf(x), 1.0);
|
|
}
|
|
}
|