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