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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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_TEST_SRC_MATH_FLOORTEST_H
#define LLVM_LIBC_TEST_SRC_MATH_FLOORTEST_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 FloorTest : public LIBC_NAMESPACE::testing::Test {
DECLARE_SPECIAL_CONSTANTS(T)
public:
typedef T (*FloorFunc)(T);
void testSpecialNumbers(FloorFunc func) {
EXPECT_FP_EQ(zero, func(zero));
EXPECT_FP_EQ(neg_zero, func(neg_zero));
EXPECT_FP_EQ(inf, func(inf));
EXPECT_FP_EQ(neg_inf, func(neg_inf));
EXPECT_FP_EQ(aNaN, func(aNaN));
}
void testRoundedNumbers(FloorFunc func) {
EXPECT_FP_EQ(T(1.0), func(T(1.0)));
EXPECT_FP_EQ(T(-1.0), func(T(-1.0)));
EXPECT_FP_EQ(T(10.0), func(T(10.0)));
EXPECT_FP_EQ(T(-10.0), func(T(-10.0)));
EXPECT_FP_EQ(T(1234.0), func(T(1234.0)));
EXPECT_FP_EQ(T(-1234.0), func(T(-1234.0)));
}
void testFractions(FloorFunc func) {
EXPECT_FP_EQ(T(0.0), func(T(0.5)));
EXPECT_FP_EQ(T(-1.0), func(T(-0.5)));
EXPECT_FP_EQ(T(0.0), func(T(0.115)));
EXPECT_FP_EQ(T(-1.0), func(T(-0.115)));
EXPECT_FP_EQ(T(0.0), func(T(0.715)));
EXPECT_FP_EQ(T(-1.0), func(T(-0.715)));
EXPECT_FP_EQ(T(1.0), func(T(1.3)));
EXPECT_FP_EQ(T(-2.0), func(T(-1.3)));
EXPECT_FP_EQ(T(1.0), func(T(1.5)));
EXPECT_FP_EQ(T(-2.0), func(T(-1.5)));
EXPECT_FP_EQ(T(1.0), func(T(1.75)));
EXPECT_FP_EQ(T(-2.0), func(T(-1.75)));
EXPECT_FP_EQ(T(10.0), func(T(10.32)));
EXPECT_FP_EQ(T(-11.0), func(T(-10.32)));
EXPECT_FP_EQ(T(10.0), func(T(10.65)));
EXPECT_FP_EQ(T(-11.0), func(T(-10.65)));
EXPECT_FP_EQ(T(1234.0), func(T(1234.38)));
EXPECT_FP_EQ(T(-1235.0), func(T(-1234.38)));
EXPECT_FP_EQ(T(1234.0), func(T(1234.96)));
EXPECT_FP_EQ(T(-1235.0), func(T(-1234.96)));
}
void testRange(FloorFunc 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))
continue;
ASSERT_MPFR_MATCH(mpfr::Operation::Floor, x, func(x), 0.0);
}
}
};
#define LIST_FLOOR_TESTS(T, func) \
using LlvmLibcFloorTest = FloorTest<T>; \
TEST_F(LlvmLibcFloorTest, SpecialNumbers) { testSpecialNumbers(&func); } \
TEST_F(LlvmLibcFloorTest, RoundedNubmers) { testRoundedNumbers(&func); } \
TEST_F(LlvmLibcFloorTest, Fractions) { testFractions(&func); } \
TEST_F(LlvmLibcFloorTest, Range) { testRange(&func); }
#endif // LLVM_LIBC_TEST_SRC_MATH_FLOORTEST_H
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