| //===-- Utility class to test frexp[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 "test/UnitTest/FEnvSafeTest.h" |
| #include "test/UnitTest/FPMatcher.h" |
| #include "test/UnitTest/Test.h" |
| |
| template <typename T> |
| class FrexpTest : public LIBC_NAMESPACE::testing::FEnvSafeTest { |
| |
| DECLARE_SPECIAL_CONSTANTS(T) |
| |
| public: |
| typedef T (*FrexpFunc)(T, int *); |
| |
| void testSpecialNumbers(FrexpFunc func) { |
| int exponent; |
| EXPECT_FP_EQ_ALL_ROUNDING(aNaN, func(aNaN, &exponent)); |
| EXPECT_FP_EQ_ALL_ROUNDING(inf, func(inf, &exponent)); |
| EXPECT_FP_EQ_ALL_ROUNDING(neg_inf, func(neg_inf, &exponent)); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(0.0, func(0.0, &exponent)); |
| EXPECT_EQ(exponent, 0); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(-0.0, func(-0.0, &exponent)); |
| EXPECT_EQ(exponent, 0); |
| } |
| |
| void testPowersOfTwo(FrexpFunc func) { |
| int exponent; |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.5), func(T(1.0), &exponent)); |
| EXPECT_EQ(exponent, 1); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.5), func(T(-1.0), &exponent)); |
| EXPECT_EQ(exponent, 1); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.5), func(T(2.0), &exponent)); |
| EXPECT_EQ(exponent, 2); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.5), func(T(-2.0), &exponent)); |
| EXPECT_EQ(exponent, 2); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.5), func(T(4.0), &exponent)); |
| EXPECT_EQ(exponent, 3); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.5), func(T(-4.0), &exponent)); |
| EXPECT_EQ(exponent, 3); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.5), func(T(8.0), &exponent)); |
| EXPECT_EQ(exponent, 4); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.5), func(T(-8.0), &exponent)); |
| EXPECT_EQ(exponent, 4); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.5), func(T(16.0), &exponent)); |
| EXPECT_EQ(exponent, 5); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.5), func(T(-16.0), &exponent)); |
| EXPECT_EQ(exponent, 5); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.5), func(T(32.0), &exponent)); |
| EXPECT_EQ(exponent, 6); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.5), func(T(-32.0), &exponent)); |
| EXPECT_EQ(exponent, 6); |
| } |
| |
| void testSomeIntegers(FrexpFunc func) { |
| int exponent; |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.75), func(T(24.0), &exponent)); |
| EXPECT_EQ(exponent, 5); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.75), func(T(-24.0), &exponent)); |
| EXPECT_EQ(exponent, 5); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.625), func(T(40.0), &exponent)); |
| EXPECT_EQ(exponent, 6); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.625), func(T(-40.0), &exponent)); |
| EXPECT_EQ(exponent, 6); |
| |
| EXPECT_FP_EQ_ALL_ROUNDING(T(0.78125), func(T(800.0), &exponent)); |
| EXPECT_EQ(exponent, 10); |
| EXPECT_FP_EQ_ALL_ROUNDING(T(-0.78125), func(T(-800.0), &exponent)); |
| EXPECT_EQ(exponent, 10); |
| } |
| }; |
| |
| #define LIST_FREXP_TESTS(T, func) \ |
| using LlvmLibcFrexpTest = FrexpTest<T>; \ |
| TEST_F(LlvmLibcFrexpTest, SpecialNumbers) { testSpecialNumbers(&func); } \ |
| TEST_F(LlvmLibcFrexpTest, PowersOfTwo) { testPowersOfTwo(&func); } \ |
| TEST_F(LlvmLibcFrexpTest, SomeIntegers) { testSomeIntegers(&func); } \ |
| static_assert(true, "Require semicolon.") |