1 //===-- Utility class to test fmaximum_mag_num[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 #ifndef LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMAXIMUMMAG_NUMTEST_H 10 #define LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMAXIMUMMAG_NUMTEST_H 11 12 #include "src/__support/CPP/algorithm.h" 13 #include "src/__support/FPUtil/BasicOperations.h" 14 #include "src/__support/FPUtil/FPBits.h" 15 #include "test/UnitTest/FEnvSafeTest.h" 16 #include "test/UnitTest/FPMatcher.h" 17 #include "test/UnitTest/Test.h" 18 19 template <typename T> 20 class FMaximumMagNumTest : public LIBC_NAMESPACE::testing::FEnvSafeTest { 21 22 DECLARE_SPECIAL_CONSTANTS(T) 23 24 public: 25 typedef T (*FMaximumMagNumFunc)(T, T); 26 testNaN(FMaximumMagNumFunc func)27 void testNaN(FMaximumMagNumFunc func) { 28 EXPECT_FP_EQ(inf, func(aNaN, inf)); 29 EXPECT_FP_EQ_WITH_EXCEPTION(inf, func(sNaN, inf), FE_INVALID); 30 EXPECT_FP_EQ(neg_inf, func(neg_inf, aNaN)); 31 EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, func(neg_inf, sNaN), FE_INVALID); 32 EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(aNaN, aNaN)).uintval()); 33 EXPECT_FP_EQ(zero, func(aNaN, zero)); 34 EXPECT_FP_EQ(neg_zero, func(neg_zero, aNaN)); 35 EXPECT_FP_EQ_WITH_EXCEPTION(zero, func(sNaN, zero), FE_INVALID); 36 EXPECT_FP_EQ_WITH_EXCEPTION(neg_zero, func(neg_zero, sNaN), FE_INVALID); 37 EXPECT_FP_EQ(T(-1.2345), func(aNaN, T(-1.2345))); 38 EXPECT_FP_EQ(T(1.2345), func(T(1.2345), aNaN)); 39 EXPECT_FP_EQ_WITH_EXCEPTION(T(-1.2345), func(sNaN, T(-1.2345)), FE_INVALID); 40 EXPECT_FP_EQ_WITH_EXCEPTION(T(1.2345), func(T(1.2345), sNaN), FE_INVALID); 41 EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(aNaN, sNaN), FE_INVALID); 42 EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(sNaN, aNaN), FE_INVALID); 43 EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(aNaN, sNaN)).uintval()); 44 EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(sNaN, aNaN)).uintval()); 45 EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(sNaN, sNaN)).uintval()); 46 } 47 testInfArg(FMaximumMagNumFunc func)48 void testInfArg(FMaximumMagNumFunc func) { 49 EXPECT_FP_EQ(inf, func(neg_inf, inf)); 50 EXPECT_FP_EQ(inf, func(inf, zero)); 51 EXPECT_FP_EQ(inf, func(neg_zero, inf)); 52 EXPECT_FP_EQ(inf, func(inf, T(1.2345))); 53 EXPECT_FP_EQ(inf, func(T(-1.2345), inf)); 54 } 55 testNegInfArg(FMaximumMagNumFunc func)56 void testNegInfArg(FMaximumMagNumFunc func) { 57 EXPECT_FP_EQ(inf, func(inf, neg_inf)); 58 EXPECT_FP_EQ(neg_inf, func(neg_inf, zero)); 59 EXPECT_FP_EQ(neg_inf, func(neg_zero, neg_inf)); 60 EXPECT_FP_EQ(neg_inf, func(neg_inf, T(-1.2345))); 61 EXPECT_FP_EQ(neg_inf, func(T(1.2345), neg_inf)); 62 } 63 testBothZero(FMaximumMagNumFunc func)64 void testBothZero(FMaximumMagNumFunc func) { 65 EXPECT_FP_EQ(zero, func(zero, zero)); 66 EXPECT_FP_EQ(zero, func(neg_zero, zero)); 67 EXPECT_FP_EQ(zero, func(zero, neg_zero)); 68 EXPECT_FP_EQ(neg_zero, func(neg_zero, neg_zero)); 69 } 70 testRange(FMaximumMagNumFunc func)71 void testRange(FMaximumMagNumFunc func) { 72 constexpr int COUNT = 100'001; 73 constexpr StorageType STEP = LIBC_NAMESPACE::cpp::max( 74 static_cast<StorageType>(STORAGE_MAX / COUNT), StorageType(1)); 75 StorageType v = 0, w = STORAGE_MAX; 76 for (int i = 0; i <= COUNT; ++i, v += STEP, w -= STEP) { 77 FPBits xbits(v), ybits(w); 78 if (xbits.is_inf_or_nan()) 79 continue; 80 if (ybits.is_inf_or_nan()) 81 continue; 82 T x = xbits.get_val(); 83 T y = ybits.get_val(); 84 if ((x == 0) && (y == 0)) 85 continue; 86 87 if (LIBC_NAMESPACE::fputil::abs(x) > LIBC_NAMESPACE::fputil::abs(y)) 88 EXPECT_FP_EQ(x, func(x, y)); 89 else 90 EXPECT_FP_EQ(y, func(x, y)); 91 } 92 } 93 }; 94 95 #define LIST_FMAXIMUM_MAG_NUM_TESTS(T, func) \ 96 using LlvmLibcFMaximumMagNumTest = FMaximumMagNumTest<T>; \ 97 TEST_F(LlvmLibcFMaximumMagNumTest, NaN) { testNaN(&func); } \ 98 TEST_F(LlvmLibcFMaximumMagNumTest, InfArg) { testInfArg(&func); } \ 99 TEST_F(LlvmLibcFMaximumMagNumTest, NegInfArg) { testNegInfArg(&func); } \ 100 TEST_F(LlvmLibcFMaximumMagNumTest, BothZero) { testBothZero(&func); } \ 101 TEST_F(LlvmLibcFMaximumMagNumTest, Range) { testRange(&func); } 102 103 #endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMAXIMUMMAG_NUMTEST_H 104