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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/CPP/algorithm.h"10#include "src/__support/FPUtil/BasicOperations.h"11#include "src/__support/FPUtil/NearestIntegerOperations.h"12#include "test/UnitTest/FEnvSafeTest.h"13#include "test/UnitTest/FPMatcher.h"14#include "test/UnitTest/Test.h"15 16#include "hdr/math_macros.h"17 18template <typename T>19class ModfTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {20 21 DECLARE_SPECIAL_CONSTANTS(T)22 23public:24 typedef T (*ModfFunc)(T, T *);25 26 void testSpecialNumbers(ModfFunc func) {27 T integral;28 29 EXPECT_FP_EQ(zero, func(zero, &integral));30 EXPECT_FP_EQ(integral, zero);31 EXPECT_FP_EQ(neg_zero, func(neg_zero, &integral));32 EXPECT_FP_EQ(integral, neg_zero);33 34 EXPECT_FP_EQ(zero, func(inf, &integral));35 EXPECT_FP_EQ(inf, integral);36 EXPECT_FP_EQ(neg_zero, func(neg_inf, &integral));37 EXPECT_FP_EQ(neg_inf, integral);38 39 EXPECT_FP_EQ(aNaN, func(aNaN, &integral));40 }41 42 void testIntegers(ModfFunc func) {43 T integral;44 45 EXPECT_FP_EQ(T(0.0), func(T(1.0), &integral));46 EXPECT_FP_EQ(T(1.0), integral);47 48 EXPECT_FP_EQ(T(-0.0), func(T(-1.0), &integral));49 EXPECT_FP_EQ(T(-1.0), integral);50 51 EXPECT_FP_EQ(T(0.0), func(T(10.0), &integral));52 EXPECT_FP_EQ(T(10.0), integral);53 54 EXPECT_FP_EQ(T(-0.0), func(T(-10.0), &integral));55 EXPECT_FP_EQ(T(-10.0), integral);56 57 EXPECT_FP_EQ(T(0.0), func(T(12345.0), &integral));58 EXPECT_FP_EQ(T(12345.0), integral);59 60 EXPECT_FP_EQ(T(-0.0), func(T(-12345.0), &integral));61 EXPECT_FP_EQ(T(-12345.0), integral);62 }63 64 void testFractions(ModfFunc func) {65 T integral;66 67 EXPECT_FP_EQ(T(0.5), func(T(1.5), &integral));68 EXPECT_FP_EQ(integral, T(1.0));69 70 EXPECT_FP_EQ(T(-0.5), func(T(-1.5), &integral));71 EXPECT_FP_EQ(integral, T(-1.0));72 73 EXPECT_FP_EQ(T(0.75), func(T(10.75), &integral));74 EXPECT_FP_EQ(integral, T(10.0));75 76 EXPECT_FP_EQ(T(-0.75), func(T(-10.75), &integral));77 EXPECT_FP_EQ(integral, T(-10.0));78 79 EXPECT_FP_EQ(T(0.125), func(T(31.125), &integral));80 EXPECT_FP_EQ(integral, T(31.0));81 82 EXPECT_FP_EQ(T(-0.125), func(T(-31.125), &integral));83 EXPECT_FP_EQ(integral, T(-31.0));84 85 EXPECT_FP_EQ(T(0.5), func(T(100.5), &integral));86 EXPECT_FP_EQ(integral, T(100.0));87 88 EXPECT_FP_EQ(T(-0.5), func(T(-100.5), &integral));89 EXPECT_FP_EQ(integral, T(-100.0));90 }91 92 void testRange(ModfFunc func) {93 constexpr int COUNT = 100'000;94 constexpr StorageType STEP = LIBC_NAMESPACE::cpp::max(95 static_cast<StorageType>(STORAGE_MAX / COUNT), StorageType(1));96 StorageType v = 0;97 for (int i = 0; i <= COUNT; ++i, v += STEP) {98 FPBits x_bits(v);99 if (x_bits.is_zero() || x_bits.is_inf_or_nan())100 continue;101 102 T x = x_bits.get_val();103 104 T integral;105 T frac = func(x, &integral);106 ASSERT_TRUE(LIBC_NAMESPACE::fputil::abs(frac) < T(1.0));107 ASSERT_TRUE(LIBC_NAMESPACE::fputil::trunc(x) == integral);108 ASSERT_TRUE(integral + frac == x);109 }110 }111};112 113#define LIST_MODF_TESTS(T, func) \114 using LlvmLibcModfTest = ModfTest<T>; \115 TEST_F(LlvmLibcModfTest, SpecialNumbers) { testSpecialNumbers(&func); } \116 TEST_F(LlvmLibcModfTest, RoundedNubmers) { testIntegers(&func); } \117 TEST_F(LlvmLibcModfTest, Fractions) { testFractions(&func); } \118 TEST_F(LlvmLibcModfTest, Range) { testRange(&func); }119