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//===-- Utility class to test floor[f|l] ------------------------*- C++ -*-===//
//
// 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/BasicOperations.h"
#include "src/__support/FPUtil/NearestIntegerOperations.h"
#include "test/UnitTest/FPMatcher.h"
#include "test/UnitTest/Test.h"
#include "utils/MPFRWrapper/MPFRUtils.h"
#include "include/llvm-libc-macros/math-macros.h"
namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
template <typename T> class ModfTest : public LIBC_NAMESPACE::testing::Test {
DECLARE_SPECIAL_CONSTANTS(T)
public:
typedef T (*ModfFunc)(T, T *);
void testSpecialNumbers(ModfFunc func) {
T integral;
EXPECT_FP_EQ(zero, func(zero, &integral));
EXPECT_FP_EQ(integral, zero);
EXPECT_FP_EQ(neg_zero, func(neg_zero, &integral));
EXPECT_FP_EQ(integral, neg_zero);
EXPECT_FP_EQ(zero, func(inf, &integral));
EXPECT_FP_EQ(inf, integral);
EXPECT_FP_EQ(neg_zero, func(neg_inf, &integral));
EXPECT_FP_EQ(neg_inf, integral);
EXPECT_FP_EQ(aNaN, func(aNaN, &integral));
}
void testIntegers(ModfFunc func) {
T integral;
EXPECT_FP_EQ(T(0.0), func(T(1.0), &integral));
EXPECT_FP_EQ(T(1.0), integral);
EXPECT_FP_EQ(T(-0.0), func(T(-1.0), &integral));
EXPECT_FP_EQ(T(-1.0), integral);
EXPECT_FP_EQ(T(0.0), func(T(10.0), &integral));
EXPECT_FP_EQ(T(10.0), integral);
EXPECT_FP_EQ(T(-0.0), func(T(-10.0), &integral));
EXPECT_FP_EQ(T(-10.0), integral);
EXPECT_FP_EQ(T(0.0), func(T(12345.0), &integral));
EXPECT_FP_EQ(T(12345.0), integral);
EXPECT_FP_EQ(T(-0.0), func(T(-12345.0), &integral));
EXPECT_FP_EQ(T(-12345.0), integral);
}
void testFractions(ModfFunc func) {
T integral;
EXPECT_FP_EQ(T(0.5), func(T(1.5), &integral));
EXPECT_FP_EQ(integral, T(1.0));
EXPECT_FP_EQ(T(-0.5), func(T(-1.5), &integral));
EXPECT_FP_EQ(integral, T(-1.0));
EXPECT_FP_EQ(T(0.75), func(T(10.75), &integral));
EXPECT_FP_EQ(integral, T(10.0));
EXPECT_FP_EQ(T(-0.75), func(T(-10.75), &integral));
EXPECT_FP_EQ(integral, T(-10.0));
EXPECT_FP_EQ(T(0.125), func(T(100.125), &integral));
EXPECT_FP_EQ(integral, T(100.0));
EXPECT_FP_EQ(T(-0.125), func(T(-100.125), &integral));
EXPECT_FP_EQ(integral, T(-100.0));
}
void testRange(ModfFunc func) {
constexpr StorageType COUNT = 100'000;
constexpr StorageType STEP = STORAGE_MAX / COUNT;
for (StorageType i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
T x = FPBits(v).get_val();
if (isnan(x) || isinf(x) || x == T(0.0))
continue;
T integral;
T frac = func(x, &integral);
ASSERT_TRUE(LIBC_NAMESPACE::fputil::abs(frac) < 1.0l);
ASSERT_TRUE(LIBC_NAMESPACE::fputil::trunc(x) == integral);
ASSERT_TRUE(integral + frac == x);
}
}
};
#define LIST_MODF_TESTS(T, func) \
using LlvmLibcModfTest = ModfTest<T>; \
TEST_F(LlvmLibcModfTest, SpecialNumbers) { testSpecialNumbers(&func); } \
TEST_F(LlvmLibcModfTest, RoundedNubmers) { testIntegers(&func); } \
TEST_F(LlvmLibcModfTest, Fractions) { testFractions(&func); } \
TEST_F(LlvmLibcModfTest, Range) { testRange(&func); }
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