86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
//===-- Utility class to test fmin[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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#include "utils/FPUtil/TestHelpers.h"
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#include "utils/MPFRWrapper/MPFRUtils.h"
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#include "utils/UnitTest/Test.h"
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#include <math.h>
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namespace mpfr = __llvm_libc::testing::mpfr;
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template <typename T> class FMaxTest : public __llvm_libc::testing::Test {
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DECLARE_SPECIAL_CONSTANTS(T)
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public:
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typedef T (*FMaxFunc)(T, T);
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void testNaN(FMaxFunc func) {
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EXPECT_FP_EQ(inf, func(aNaN, inf));
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EXPECT_FP_EQ(negInf, func(negInf, aNaN));
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EXPECT_FP_EQ(0.0, func(aNaN, 0.0));
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EXPECT_FP_EQ(-0.0, func(-0.0, aNaN));
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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(aNaN, func(aNaN, aNaN));
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}
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void testInfArg(FMaxFunc func) {
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EXPECT_FP_EQ(inf, func(negInf, inf));
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EXPECT_FP_EQ(inf, func(inf, 0.0));
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EXPECT_FP_EQ(inf, func(-0.0, inf));
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EXPECT_FP_EQ(inf, func(inf, T(1.2345)));
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EXPECT_FP_EQ(inf, func(T(-1.2345), inf));
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}
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void testNegInfArg(FMaxFunc func) {
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EXPECT_FP_EQ(inf, func(inf, negInf));
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EXPECT_FP_EQ(0.0, func(negInf, 0.0));
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EXPECT_FP_EQ(-0.0, func(-0.0, negInf));
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EXPECT_FP_EQ(T(-1.2345), func(negInf, T(-1.2345)));
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EXPECT_FP_EQ(T(1.2345), func(T(1.2345), negInf));
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}
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void testBothZero(FMaxFunc func) {
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EXPECT_FP_EQ(0.0, func(0.0, 0.0));
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EXPECT_FP_EQ(0.0, func(-0.0, 0.0));
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EXPECT_FP_EQ(0.0, func(0.0, -0.0));
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EXPECT_FP_EQ(-0.0, func(-0.0, -0.0));
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}
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void testRange(FMaxFunc func) {
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constexpr UIntType count = 10000001;
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constexpr UIntType step = UIntType(-1) / count;
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for (UIntType i = 0, v = 0, w = UIntType(-1); i <= count;
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++i, v += step, w -= step) {
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T x = T(FPBits(v)), y = T(FPBits(w));
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if (isnan(x) || isinf(x))
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continue;
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if (isnan(y) || isinf(y))
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continue;
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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(x, func(x, y));
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} else {
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EXPECT_FP_EQ(y, func(x, y));
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}
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}
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}
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};
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#define LIST_FMAX_TESTS(T, func) \
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using LlvmLibcFMaxTest = FMaxTest<T>; \
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TEST_F(LlvmLibcFMaxTest, NaN) { testNaN(&func); } \
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TEST_F(LlvmLibcFMaxTest, InfArg) { testInfArg(&func); } \
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TEST_F(LlvmLibcFMaxTest, NegInfArg) { testNegInfArg(&func); } \
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TEST_F(LlvmLibcFMaxTest, BothZero) { testBothZero(&func); } \
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TEST_F(LlvmLibcFMaxTest, Range) { testRange(&func); }
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