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1//===-- Utility class to test fmin[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#ifndef LLVM_LIBC_TEST_SRC_MATH_FMINTEST_H10#define LLVM_LIBC_TEST_SRC_MATH_FMINTEST_H11 12#include "src/__support/FPUtil/FPBits.h"13#include "test/UnitTest/FEnvSafeTest.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16#include "utils/MPFRWrapper/MPFRUtils.h"17 18#include "hdr/math_macros.h"19 20namespace mpfr = LIBC_NAMESPACE::testing::mpfr;21 22template <typename T>23class FMinTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {24 25 DECLARE_SPECIAL_CONSTANTS(T)26 27public:28 typedef T (*FMinFunc)(T, T);29 30 void testNaN(FMinFunc func) {31 EXPECT_FP_EQ(inf, func(aNaN, inf));32 EXPECT_FP_EQ(neg_inf, func(neg_inf, aNaN));33 EXPECT_FP_EQ(zero, func(aNaN, zero));34 EXPECT_FP_EQ(neg_zero, func(neg_zero, aNaN));35 EXPECT_FP_EQ(T(-1.2345), func(aNaN, T(-1.2345)));36 EXPECT_FP_EQ(T(1.2345), func(T(1.2345), aNaN));37 EXPECT_FP_EQ(aNaN, func(aNaN, aNaN));38 }39 40 void testInfArg(FMinFunc func) {41 EXPECT_FP_EQ(neg_inf, func(neg_inf, inf));42 EXPECT_FP_EQ(zero, func(inf, zero));43 EXPECT_FP_EQ(neg_zero, func(neg_zero, inf));44 EXPECT_FP_EQ(T(1.2345), func(inf, T(1.2345)));45 EXPECT_FP_EQ(T(-1.2345), func(T(-1.2345), inf));46 }47 48 void testNegInfArg(FMinFunc func) {49 EXPECT_FP_EQ(neg_inf, func(inf, neg_inf));50 EXPECT_FP_EQ(neg_inf, func(neg_inf, zero));51 EXPECT_FP_EQ(neg_inf, func(neg_zero, neg_inf));52 EXPECT_FP_EQ(neg_inf, func(neg_inf, T(-1.2345)));53 EXPECT_FP_EQ(neg_inf, func(T(1.2345), neg_inf));54 }55 56 void testBothZero(FMinFunc func) {57 EXPECT_FP_EQ(zero, func(zero, zero));58 EXPECT_FP_EQ(neg_zero, func(neg_zero, zero));59 EXPECT_FP_EQ(neg_zero, func(zero, neg_zero));60 EXPECT_FP_EQ(neg_zero, func(neg_zero, neg_zero));61 }62 63 void testRange(FMinFunc func) {64 constexpr StorageType COUNT = 100'001;65 constexpr StorageType STEP = STORAGE_MAX / COUNT;66 for (StorageType i = 0, v = 0, w = STORAGE_MAX; i <= COUNT;67 ++i, v += STEP, w -= STEP) {68 T x = FPBits(v).get_val(), y = FPBits(w).get_val();69 if (FPBits(v).is_nan() || FPBits(v).is_inf())70 continue;71 if (FPBits(w).is_nan() || FPBits(w).is_inf())72 continue;73 if ((x == 0) && (y == 0))74 continue;75 76 if (x > y) {77 EXPECT_FP_EQ(y, func(x, y));78 } else {79 EXPECT_FP_EQ(x, func(x, y));80 }81 }82 }83};84 85#define LIST_FMIN_TESTS(T, func) \86 using LlvmLibcFMinTest = FMinTest<T>; \87 TEST_F(LlvmLibcFMinTest, NaN) { testNaN(&func); } \88 TEST_F(LlvmLibcFMinTest, InfArg) { testInfArg(&func); } \89 TEST_F(LlvmLibcFMinTest, NegInfArg) { testNegInfArg(&func); } \90 TEST_F(LlvmLibcFMinTest, BothZero) { testBothZero(&func); } \91 TEST_F(LlvmLibcFMinTest, Range) { testRange(&func); }92 93#endif // LLVM_LIBC_TEST_SRC_MATH_FMINTEST_H94