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1//===-- Utility class to test floor[f|l] ------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/__support/FPUtil/BasicOperations.h"10#include "src/__support/FPUtil/NearestIntegerOperations.h"11#include "test/UnitTest/FEnvSafeTest.h"12#include "test/UnitTest/FPMatcher.h"13#include "test/UnitTest/Test.h"14#include "utils/MPFRWrapper/MPFRUtils.h"15 16#include "hdr/math_macros.h"17 18namespace mpfr = LIBC_NAMESPACE::testing::mpfr;19 20template <typename T>21class ModfTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {22 23 DECLARE_SPECIAL_CONSTANTS(T)24 25public:26 typedef T (*ModfFunc)(T, T *);27 28 void testSpecialNumbers(ModfFunc func) {29 T integral;30 31 EXPECT_FP_EQ(zero, func(zero, &integral));32 EXPECT_FP_EQ(integral, zero);33 EXPECT_FP_EQ(neg_zero, func(neg_zero, &integral));34 EXPECT_FP_EQ(integral, neg_zero);35 36 EXPECT_FP_EQ(zero, func(inf, &integral));37 EXPECT_FP_EQ(inf, integral);38 EXPECT_FP_EQ(neg_zero, func(neg_inf, &integral));39 EXPECT_FP_EQ(neg_inf, integral);40 41 EXPECT_FP_EQ(aNaN, func(aNaN, &integral));42 }43 44 void testIntegers(ModfFunc func) {45 T integral;46 47 EXPECT_FP_EQ(T(0.0), func(T(1.0), &integral));48 EXPECT_FP_EQ(T(1.0), integral);49 50 EXPECT_FP_EQ(T(-0.0), func(T(-1.0), &integral));51 EXPECT_FP_EQ(T(-1.0), integral);52 53 EXPECT_FP_EQ(T(0.0), func(T(10.0), &integral));54 EXPECT_FP_EQ(T(10.0), integral);55 56 EXPECT_FP_EQ(T(-0.0), func(T(-10.0), &integral));57 EXPECT_FP_EQ(T(-10.0), integral);58 59 EXPECT_FP_EQ(T(0.0), func(T(12345.0), &integral));60 EXPECT_FP_EQ(T(12345.0), integral);61 62 EXPECT_FP_EQ(T(-0.0), func(T(-12345.0), &integral));63 EXPECT_FP_EQ(T(-12345.0), integral);64 }65 66 void testFractions(ModfFunc func) {67 T integral;68 69 EXPECT_FP_EQ(T(0.5), func(T(1.5), &integral));70 EXPECT_FP_EQ(integral, T(1.0));71 72 EXPECT_FP_EQ(T(-0.5), func(T(-1.5), &integral));73 EXPECT_FP_EQ(integral, T(-1.0));74 75 EXPECT_FP_EQ(T(0.75), func(T(10.75), &integral));76 EXPECT_FP_EQ(integral, T(10.0));77 78 EXPECT_FP_EQ(T(-0.75), func(T(-10.75), &integral));79 EXPECT_FP_EQ(integral, T(-10.0));80 81 EXPECT_FP_EQ(T(0.125), func(T(100.125), &integral));82 EXPECT_FP_EQ(integral, T(100.0));83 84 EXPECT_FP_EQ(T(-0.125), func(T(-100.125), &integral));85 EXPECT_FP_EQ(integral, T(-100.0));86 }87 88 void testRange(ModfFunc func) {89 constexpr StorageType COUNT = 100'000;90 constexpr StorageType STEP = STORAGE_MAX / COUNT;91 for (StorageType i = 0, v = 0; i <= COUNT; ++i, v += STEP) {92 T x = FPBits(v).get_val();93 if (FPBits(v).is_nan() || FPBits(v).is_inf() || x == T(0.0))94 continue;95 96 T integral;97 T frac = func(x, &integral);98 ASSERT_TRUE(LIBC_NAMESPACE::fputil::abs(frac) < 1.0l);99 ASSERT_TRUE(LIBC_NAMESPACE::fputil::trunc(x) == integral);100 ASSERT_TRUE(integral + frac == x);101 }102 }103};104 105#define LIST_MODF_TESTS(T, func) \106 using LlvmLibcModfTest = ModfTest<T>; \107 TEST_F(LlvmLibcModfTest, SpecialNumbers) { testSpecialNumbers(&func); } \108 TEST_F(LlvmLibcModfTest, RoundedNubmers) { testIntegers(&func); } \109 TEST_F(LlvmLibcModfTest, Fractions) { testFractions(&func); } \110 TEST_F(LlvmLibcModfTest, Range) { testRange(&func); }111