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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/__support/FPUtil/BasicOperations.h" 10 #include "src/__support/FPUtil/NearestIntegerOperations.h" 11 #include "utils/MPFRWrapper/MPFRUtils.h" 12 #include "utils/UnitTest/FPMatcher.h" 13 #include "utils/UnitTest/Test.h" 14 15 #include <math.h> 16 17 namespace mpfr = __llvm_libc::testing::mpfr; 18 19 template <typename T> class ModfTest : public __llvm_libc::testing::Test { 20 21 DECLARE_SPECIAL_CONSTANTS(T) 22 23 public: 24 typedef T (*ModfFunc)(T, T *); 25 testSpecialNumbers(ModfFunc func)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 testIntegers(ModfFunc func)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 testFractions(ModfFunc func)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(100.125), &integral)); 80 EXPECT_FP_EQ(integral, T(100.0)); 81 82 EXPECT_FP_EQ(T(-0.125), func(T(-100.125), &integral)); 83 EXPECT_FP_EQ(integral, T(-100.0)); 84 } 85 testRange(ModfFunc func)86 void testRange(ModfFunc func) { 87 constexpr UIntType COUNT = 10000000; 88 constexpr UIntType STEP = UIntType(-1) / COUNT; 89 for (UIntType i = 0, v = 0; i <= COUNT; ++i, v += STEP) { 90 T x = T(FPBits(v)); 91 if (isnan(x) || isinf(x) || x == T(0.0)) 92 continue; 93 94 T integral; 95 T frac = func(x, &integral); 96 ASSERT_TRUE(__llvm_libc::fputil::abs(frac) < 1.0l); 97 ASSERT_TRUE(__llvm_libc::fputil::trunc(x) == integral); 98 ASSERT_TRUE(integral + frac == x); 99 } 100 } 101 }; 102 103 #define LIST_MODF_TESTS(T, func) \ 104 using LlvmLibcModfTest = ModfTest<T>; \ 105 TEST_F(LlvmLibcModfTest, SpecialNumbers) { testSpecialNumbers(&func); } \ 106 TEST_F(LlvmLibcModfTest, RoundedNubmers) { testIntegers(&func); } \ 107 TEST_F(LlvmLibcModfTest, Fractions) { testFractions(&func); } \ 108 TEST_F(LlvmLibcModfTest, Range) { testRange(&func); } 109