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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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMNUMTEST_H10#define LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMNUMTEST_H11 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 18template <typename T>19class FMinimumNumTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {20 21 DECLARE_SPECIAL_CONSTANTS(T)22 23public:24 typedef T (*FMinimumNumFunc)(T, T);25 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 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 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 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 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 else89 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_H103