102 lines
4.1 KiB
C++
102 lines
4.1 KiB
C++
//===-- Utility class to test fminimum_num[f|l] -----------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMNUMTEST_H
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#define LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMNUMTEST_H
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#include "src/__support/CPP/algorithm.h"
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#include "src/__support/FPUtil/FPBits.h"
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#include "test/UnitTest/FEnvSafeTest.h"
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#include "test/UnitTest/FPMatcher.h"
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#include "test/UnitTest/Test.h"
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template <typename T>
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class FMinimumNumTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
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DECLARE_SPECIAL_CONSTANTS(T)
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public:
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typedef T (*FMinimumNumFunc)(T, T);
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void testNaN(FMinimumNumFunc func) {
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EXPECT_FP_EQ(inf, func(aNaN, inf));
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EXPECT_FP_EQ_WITH_EXCEPTION(inf, func(sNaN, inf), FE_INVALID);
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EXPECT_FP_EQ(neg_inf, func(neg_inf, aNaN));
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EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, func(neg_inf, sNaN), FE_INVALID);
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EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(aNaN, aNaN)).uintval());
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EXPECT_FP_EQ(zero, func(aNaN, zero));
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EXPECT_FP_EQ(neg_zero, func(neg_zero, aNaN));
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EXPECT_FP_EQ_WITH_EXCEPTION(zero, func(sNaN, zero), FE_INVALID);
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EXPECT_FP_EQ_WITH_EXCEPTION(neg_zero, func(neg_zero, sNaN), FE_INVALID);
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EXPECT_FP_EQ(T(-1.2345), func(aNaN, T(-1.2345)));
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EXPECT_FP_EQ(T(1.2345), func(T(1.2345), aNaN));
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EXPECT_FP_EQ_WITH_EXCEPTION(T(-1.2345), func(sNaN, T(-1.2345)), FE_INVALID);
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EXPECT_FP_EQ_WITH_EXCEPTION(T(1.2345), func(T(1.2345), sNaN), FE_INVALID);
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EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(aNaN, sNaN), FE_INVALID);
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EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(sNaN, aNaN), FE_INVALID);
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EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(aNaN, sNaN)).uintval());
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EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(sNaN, aNaN)).uintval());
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EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(sNaN, sNaN)).uintval());
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}
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void testInfArg(FMinimumNumFunc func) {
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EXPECT_FP_EQ(neg_inf, func(neg_inf, inf));
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EXPECT_FP_EQ(zero, func(inf, zero));
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EXPECT_FP_EQ(neg_zero, func(neg_zero, inf));
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EXPECT_FP_EQ(T(1.2345), func(inf, T(1.2345)));
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EXPECT_FP_EQ(T(-1.2345), func(T(-1.2345), inf));
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}
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void testNegInfArg(FMinimumNumFunc func) {
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EXPECT_FP_EQ(neg_inf, func(inf, neg_inf));
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EXPECT_FP_EQ(neg_inf, func(neg_inf, zero));
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EXPECT_FP_EQ(neg_inf, func(neg_zero, neg_inf));
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EXPECT_FP_EQ(neg_inf, func(neg_inf, T(-1.2345)));
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EXPECT_FP_EQ(neg_inf, func(T(1.2345), neg_inf));
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}
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void testBothZero(FMinimumNumFunc func) {
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EXPECT_FP_EQ(zero, func(zero, zero));
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EXPECT_FP_EQ(neg_zero, func(neg_zero, zero));
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EXPECT_FP_EQ(neg_zero, func(zero, neg_zero));
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EXPECT_FP_EQ(neg_zero, func(neg_zero, neg_zero));
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}
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void testRange(FMinimumNumFunc func) {
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constexpr int COUNT = 1'231;
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constexpr StorageType STEP = LIBC_NAMESPACE::cpp::max(
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static_cast<StorageType>(STORAGE_MAX / COUNT), StorageType(1));
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StorageType v = 0, w = STORAGE_MAX;
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for (int i = 0; i <= COUNT; ++i, v += STEP, w -= STEP) {
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FPBits xbits(v), ybits(w);
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if (xbits.is_inf_or_nan())
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continue;
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if (ybits.is_inf_or_nan())
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continue;
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T x = xbits.get_val();
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T y = ybits.get_val();
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if ((x == 0) && (y == 0))
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continue;
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if (x > y)
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EXPECT_FP_EQ(y, func(x, y));
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else
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EXPECT_FP_EQ(x, func(x, y));
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}
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}
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};
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#define LIST_FMINIMUM_NUM_TESTS(T, func) \
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using LlvmLibcFMinimumNumTest = FMinimumNumTest<T>; \
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TEST_F(LlvmLibcFMinimumNumTest, NaN) { testNaN(&func); } \
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TEST_F(LlvmLibcFMinimumNumTest, InfArg) { testInfArg(&func); } \
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TEST_F(LlvmLibcFMinimumNumTest, NegInfArg) { testNegInfArg(&func); } \
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TEST_F(LlvmLibcFMinimumNumTest, BothZero) { testBothZero(&func); } \
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TEST_F(LlvmLibcFMinimumNumTest, Range) { testRange(&func); }
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#endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMNUMTEST_H
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