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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_FMAXTEST_H10#define LLVM_LIBC_TEST_SRC_MATH_FMAXTEST_H11 12#include "test/UnitTest/FEnvSafeTest.h"13#include "test/UnitTest/FPMatcher.h"14#include "test/UnitTest/Test.h"15#include "utils/MPFRWrapper/MPFRUtils.h"16 17#include "hdr/math_macros.h"18 19namespace mpfr = LIBC_NAMESPACE::testing::mpfr;20 21template <typename T>22class FMaxTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {23 24 DECLARE_SPECIAL_CONSTANTS(T)25 26public:27 typedef T (*FMaxFunc)(T, T);28 29 void testNaN(FMaxFunc func) {30 EXPECT_FP_EQ(inf, func(aNaN, inf));31 EXPECT_FP_EQ(neg_inf, func(neg_inf, aNaN));32 EXPECT_FP_EQ(zero, func(aNaN, zero));33 EXPECT_FP_EQ(neg_zero, func(neg_zero, aNaN));34 EXPECT_FP_EQ(T(-1.2345), func(aNaN, T(-1.2345)));35 EXPECT_FP_EQ(T(1.2345), func(T(1.2345), aNaN));36 EXPECT_FP_EQ(aNaN, func(aNaN, aNaN));37 }38 39 void testInfArg(FMaxFunc func) {40 EXPECT_FP_EQ(inf, func(neg_inf, inf));41 EXPECT_FP_EQ(inf, func(inf, zero));42 EXPECT_FP_EQ(inf, func(neg_zero, inf));43 EXPECT_FP_EQ(inf, func(inf, T(1.2345)));44 EXPECT_FP_EQ(inf, func(T(-1.2345), inf));45 }46 47 void testNegInfArg(FMaxFunc func) {48 EXPECT_FP_EQ(inf, func(inf, neg_inf));49 EXPECT_FP_EQ(zero, func(neg_inf, zero));50 EXPECT_FP_EQ(neg_zero, func(neg_zero, neg_inf));51 EXPECT_FP_EQ(T(-1.2345), func(neg_inf, T(-1.2345)));52 EXPECT_FP_EQ(T(1.2345), func(T(1.2345), neg_inf));53 }54 55 void testBothZero(FMaxFunc func) {56 EXPECT_FP_EQ(zero, func(zero, zero));57 EXPECT_FP_EQ(zero, func(neg_zero, zero));58 EXPECT_FP_EQ(zero, func(zero, neg_zero));59 EXPECT_FP_EQ(neg_zero, func(neg_zero, neg_zero));60 }61 62 void testRange(FMaxFunc func) {63 constexpr StorageType COUNT = 100'001;64 constexpr StorageType STEP = STORAGE_MAX / COUNT;65 for (StorageType i = 0, v = 0, w = STORAGE_MAX; i <= COUNT;66 ++i, v += STEP, w -= STEP) {67 T x = FPBits(v).get_val(), y = FPBits(w).get_val();68 if (FPBits(v).is_nan() || FPBits(v).is_inf())69 continue;70 if (FPBits(w).is_nan() || FPBits(w).is_inf())71 continue;72 if ((x == 0) && (y == 0))73 continue;74 75 if (x > y) {76 EXPECT_FP_EQ(x, func(x, y));77 } else {78 EXPECT_FP_EQ(y, func(x, y));79 }80 }81 }82};83 84#define LIST_FMAX_TESTS(T, func) \85 using LlvmLibcFMaxTest = FMaxTest<T>; \86 TEST_F(LlvmLibcFMaxTest, NaN) { testNaN(&func); } \87 TEST_F(LlvmLibcFMaxTest, InfArg) { testInfArg(&func); } \88 TEST_F(LlvmLibcFMaxTest, NegInfArg) { testNegInfArg(&func); } \89 TEST_F(LlvmLibcFMaxTest, BothZero) { testBothZero(&func); } \90 TEST_F(LlvmLibcFMaxTest, Range) { testRange(&func); }91 92#endif // LLVM_LIBC_TEST_SRC_MATH_FMAXTEST_H93