92 lines · c
1//===-- Utility class to test fmaximum_mag[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_FMAXIMUM_MAGTEST_H10#define LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMAXIMUM_MAGTEST_H11 12#include "src/__support/CPP/algorithm.h"13#include "src/__support/FPUtil/BasicOperations.h"14#include "test/UnitTest/FEnvSafeTest.h"15#include "test/UnitTest/FPMatcher.h"16#include "test/UnitTest/Test.h"17 18template <typename T>19class FMaximumMagTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {20 21 DECLARE_SPECIAL_CONSTANTS(T)22 23public:24 typedef T (*FMaximumMagFunc)(T, T);25 26 void testNaN(FMaximumMagFunc func) {27 EXPECT_FP_EQ(aNaN, func(aNaN, inf));28 EXPECT_FP_EQ(aNaN, func(neg_inf, aNaN));29 EXPECT_FP_EQ(aNaN, func(aNaN, zero));30 EXPECT_FP_EQ(aNaN, func(neg_zero, aNaN));31 EXPECT_FP_EQ(aNaN, func(aNaN, T(-1.2345)));32 EXPECT_FP_EQ(aNaN, func(T(1.2345), aNaN));33 EXPECT_FP_EQ(aNaN, func(aNaN, aNaN));34 }35 36 void testInfArg(FMaximumMagFunc func) {37 EXPECT_FP_EQ(inf, func(neg_inf, inf));38 EXPECT_FP_EQ(inf, func(inf, zero));39 EXPECT_FP_EQ(inf, func(neg_zero, inf));40 EXPECT_FP_EQ(inf, func(inf, T(1.2345)));41 EXPECT_FP_EQ(inf, func(T(-1.2345), inf));42 }43 44 void testNegInfArg(FMaximumMagFunc func) {45 EXPECT_FP_EQ(inf, func(inf, neg_inf));46 EXPECT_FP_EQ(neg_inf, func(neg_inf, zero));47 EXPECT_FP_EQ(neg_inf, func(neg_zero, neg_inf));48 EXPECT_FP_EQ(neg_inf, func(neg_inf, T(-1.2345)));49 EXPECT_FP_EQ(neg_inf, func(T(1.2345), neg_inf));50 }51 52 void testBothZero(FMaximumMagFunc func) {53 EXPECT_FP_EQ(zero, func(zero, zero));54 EXPECT_FP_EQ(zero, func(neg_zero, zero));55 EXPECT_FP_EQ(zero, func(zero, neg_zero));56 EXPECT_FP_EQ(neg_zero, func(neg_zero, neg_zero));57 }58 59 void testRange(FMaximumMagFunc func) {60 constexpr int COUNT = 100'001;61 constexpr StorageType STEP = LIBC_NAMESPACE::cpp::max(62 static_cast<StorageType>(STORAGE_MAX / COUNT), StorageType(1));63 StorageType v = 0, w = STORAGE_MAX;64 for (int i = 0; i <= COUNT; ++i, v += STEP, w -= STEP) {65 FPBits xbits(v), ybits(w);66 if (xbits.is_inf_or_nan())67 continue;68 if (ybits.is_inf_or_nan())69 continue;70 T x = xbits.get_val();71 T y = ybits.get_val();72 if ((x == 0) && (y == 0))73 continue;74 75 if (LIBC_NAMESPACE::fputil::abs(x) > LIBC_NAMESPACE::fputil::abs(y))76 EXPECT_FP_EQ(x, func(x, y));77 else78 EXPECT_FP_EQ(y, func(x, y));79 }80 }81};82 83#define LIST_FMAXIMUM_MAG_TESTS(T, func) \84 using LlvmLibcFMaximumMagTest = FMaximumMagTest<T>; \85 TEST_F(LlvmLibcFMaximumMagTest, NaN) { testNaN(&func); } \86 TEST_F(LlvmLibcFMaximumMagTest, InfArg) { testInfArg(&func); } \87 TEST_F(LlvmLibcFMaximumMagTest, NegInfArg) { testNegInfArg(&func); } \88 TEST_F(LlvmLibcFMaximumMagTest, BothZero) { testBothZero(&func); } \89 TEST_F(LlvmLibcFMaximumMagTest, Range) { testRange(&func); }90 91#endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMAXIMUM_MAGTEST_H92