| //===-- Utility class to test trunc[f|l] ------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "utils/MPFRWrapper/MPFRUtils.h" |
| #include "utils/UnitTest/FPMatcher.h" |
| #include "utils/UnitTest/Test.h" |
| |
| #include <math.h> |
| |
| namespace mpfr = __llvm_libc::testing::mpfr; |
| |
| template <typename T> class TruncTest : public __llvm_libc::testing::Test { |
| |
| DECLARE_SPECIAL_CONSTANTS(T) |
| |
| public: |
| typedef T (*TruncFunc)(T); |
| |
| void testSpecialNumbers(TruncFunc func) { |
| EXPECT_FP_EQ(zero, func(zero)); |
| EXPECT_FP_EQ(negZero, func(negZero)); |
| |
| EXPECT_FP_EQ(inf, func(inf)); |
| EXPECT_FP_EQ(negInf, func(negInf)); |
| |
| EXPECT_FP_EQ(aNaN, func(aNaN)); |
| } |
| |
| void testRoundedNumbers(TruncFunc func) { |
| EXPECT_FP_EQ(T(1.0), func(T(1.0))); |
| EXPECT_FP_EQ(T(-1.0), func(T(-1.0))); |
| EXPECT_FP_EQ(T(10.0), func(T(10.0))); |
| EXPECT_FP_EQ(T(-10.0), func(T(-10.0))); |
| EXPECT_FP_EQ(T(1234.0), func(T(1234.0))); |
| EXPECT_FP_EQ(T(-1234.0), func(T(-1234.0))); |
| } |
| |
| void testFractions(TruncFunc func) { |
| EXPECT_FP_EQ(T(0.0), func(T(0.5))); |
| EXPECT_FP_EQ(T(-0.0), func(T(-0.5))); |
| EXPECT_FP_EQ(T(0.0), func(T(0.115))); |
| EXPECT_FP_EQ(T(-0.0), func(T(-0.115))); |
| EXPECT_FP_EQ(T(0.0), func(T(0.715))); |
| EXPECT_FP_EQ(T(-0.0), func(T(-0.715))); |
| EXPECT_FP_EQ(T(1.0), func(T(1.3))); |
| EXPECT_FP_EQ(T(-1.0), func(T(-1.3))); |
| EXPECT_FP_EQ(T(1.0), func(T(1.5))); |
| EXPECT_FP_EQ(T(-1.0), func(T(-1.5))); |
| EXPECT_FP_EQ(T(1.0), func(T(1.75))); |
| EXPECT_FP_EQ(T(-1.0), func(T(-1.75))); |
| EXPECT_FP_EQ(T(10.0), func(T(10.32))); |
| EXPECT_FP_EQ(T(-10.0), func(T(-10.32))); |
| EXPECT_FP_EQ(T(10.0), func(T(10.65))); |
| EXPECT_FP_EQ(T(-10.0), func(T(-10.65))); |
| EXPECT_FP_EQ(T(1234.0), func(T(1234.38))); |
| EXPECT_FP_EQ(T(-1234.0), func(T(-1234.38))); |
| EXPECT_FP_EQ(T(1234.0), func(T(1234.96))); |
| EXPECT_FP_EQ(T(-1234.0), func(T(-1234.96))); |
| } |
| |
| void testRange(TruncFunc func) { |
| constexpr UIntType count = 10000000; |
| constexpr UIntType step = UIntType(-1) / count; |
| for (UIntType i = 0, v = 0; i <= count; ++i, v += step) { |
| T x = T(FPBits(v)); |
| if (isnan(x) || isinf(x)) |
| continue; |
| |
| ASSERT_MPFR_MATCH(mpfr::Operation::Trunc, x, func(x), 0.0); |
| } |
| } |
| }; |
| |
| #define LIST_TRUNC_TESTS(T, func) \ |
| using LlvmLibcTruncTest = TruncTest<T>; \ |
| TEST_F(LlvmLibcTruncTest, SpecialNumbers) { testSpecialNumbers(&func); } \ |
| TEST_F(LlvmLibcTruncTest, RoundedNubmers) { testRoundedNumbers(&func); } \ |
| TEST_F(LlvmLibcTruncTest, Fractions) { testFractions(&func); } \ |
| TEST_F(LlvmLibcTruncTest, Range) { testRange(&func); } |