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1//===-- Utility class to test fminimum[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_SMOKE_FMINIMUMTEST_H10#define LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMTEST_H11 12#include "src/__support/CPP/algorithm.h"13#include "test/UnitTest/FEnvSafeTest.h"14#include "test/UnitTest/FPMatcher.h"15#include "test/UnitTest/Test.h"16 17template <typename T>18class FMinimumTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {19 20 DECLARE_SPECIAL_CONSTANTS(T)21 22public:23 typedef T (*FMinimumFunc)(T, T);24 25 void testNaN(FMinimumFunc func) {26 EXPECT_FP_EQ(aNaN, func(aNaN, inf));27 EXPECT_FP_EQ(aNaN, func(neg_inf, aNaN));28 EXPECT_FP_EQ(aNaN, func(aNaN, zero));29 EXPECT_FP_EQ(aNaN, func(neg_zero, aNaN));30 EXPECT_FP_EQ(aNaN, func(aNaN, T(-1.2345)));31 EXPECT_FP_EQ(aNaN, func(T(1.2345), aNaN));32 EXPECT_FP_EQ(aNaN, func(aNaN, aNaN));33 }34 35 void testInfArg(FMinimumFunc func) {36 EXPECT_FP_EQ(neg_inf, func(neg_inf, inf));37 EXPECT_FP_EQ(zero, func(inf, zero));38 EXPECT_FP_EQ(neg_zero, func(neg_zero, inf));39 EXPECT_FP_EQ(T(1.2345), func(inf, T(1.2345)));40 EXPECT_FP_EQ(T(1.2345), func(T(1.2345), inf));41 }42 43 void testNegInfArg(FMinimumFunc func) {44 EXPECT_FP_EQ(neg_inf, func(inf, neg_inf));45 EXPECT_FP_EQ(neg_inf, func(neg_inf, zero));46 EXPECT_FP_EQ(neg_inf, func(neg_zero, neg_inf));47 EXPECT_FP_EQ(neg_inf, func(neg_inf, T(-1.2345)));48 EXPECT_FP_EQ(neg_inf, func(T(1.2345), neg_inf));49 }50 51 void testBothZero(FMinimumFunc func) {52 EXPECT_FP_EQ(zero, func(zero, zero));53 EXPECT_FP_EQ(neg_zero, func(neg_zero, zero));54 EXPECT_FP_EQ(neg_zero, func(zero, neg_zero));55 EXPECT_FP_EQ(neg_zero, func(neg_zero, neg_zero));56 }57 58 void testRange(FMinimumFunc func) {59 constexpr int COUNT = 100'001;60 constexpr StorageType STEP = LIBC_NAMESPACE::cpp::max(61 static_cast<StorageType>(STORAGE_MAX / COUNT), StorageType(1));62 StorageType v = 0, w = STORAGE_MAX;63 for (int i = 0; i <= COUNT; ++i, v += STEP, w -= STEP) {64 FPBits xbits(v), ybits(w);65 if (xbits.is_inf_or_nan())66 continue;67 if (ybits.is_inf_or_nan())68 continue;69 T x = xbits.get_val();70 T y = ybits.get_val();71 if ((x == 0) && (y == 0))72 continue;73 74 if (x > y)75 EXPECT_FP_EQ(y, func(x, y));76 else77 EXPECT_FP_EQ(x, func(x, y));78 }79 }80};81 82#define LIST_FMINIMUM_TESTS(T, func) \83 using LlvmLibcFMinimumTest = FMinimumTest<T>; \84 TEST_F(LlvmLibcFMinimumTest, NaN) { testNaN(&func); } \85 TEST_F(LlvmLibcFMinimumTest, InfArg) { testInfArg(&func); } \86 TEST_F(LlvmLibcFMinimumTest, NegInfArg) { testNegInfArg(&func); } \87 TEST_F(LlvmLibcFMinimumTest, BothZero) { testBothZero(&func); } \88 TEST_F(LlvmLibcFMinimumTest, Range) { testRange(&func); }89 90#endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMTEST_H91