25226f3e4a
Apply the formatting rules that were applied to the libc/src directory to the libc/test directory, as well as the files in libc/utils that are included by the tests. This does not include automated enforcement. Reviewed By: sivachandra, lntue Differential Revision: https://reviews.llvm.org/D116127
95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
//===-- Utility class to test logb[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 "src/__support/FPUtil/ManipulationFunctions.h"
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#include "utils/MPFRWrapper/MPFRUtils.h"
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#include "utils/UnitTest/FPMatcher.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 LogbTest : public __llvm_libc::testing::Test {
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DECLARE_SPECIAL_CONSTANTS(T)
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static constexpr UIntType HIDDEN_BIT =
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UIntType(1) << __llvm_libc::fputil::MantissaWidth<T>::VALUE;
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public:
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typedef T (*LogbFunc)(T);
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void testSpecialNumbers(LogbFunc func) {
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ASSERT_FP_EQ(aNaN, func(aNaN));
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ASSERT_FP_EQ(inf, func(inf));
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ASSERT_FP_EQ(inf, func(neg_inf));
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ASSERT_FP_EQ(neg_inf, func(0.0));
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ASSERT_FP_EQ(neg_inf, func(-0.0));
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}
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void testPowersOfTwo(LogbFunc func) {
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EXPECT_FP_EQ(T(0.0), func(T(1.0)));
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EXPECT_FP_EQ(T(0.0), func(T(-1.0)));
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EXPECT_FP_EQ(T(1.0), func(T(2.0)));
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EXPECT_FP_EQ(T(1.0), func(T(-2.0)));
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EXPECT_FP_EQ(T(2.0), func(T(4.0)));
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EXPECT_FP_EQ(T(2.0), func(T(-4.0)));
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EXPECT_FP_EQ(T(3.0), func(T(8.0)));
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EXPECT_FP_EQ(T(3.0), func(T(-8.0)));
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EXPECT_FP_EQ(T(4.0), func(T(16.0)));
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EXPECT_FP_EQ(T(4.0), func(T(-16.0)));
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EXPECT_FP_EQ(T(5.0), func(T(32.0)));
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EXPECT_FP_EQ(T(5.0), func(T(-32.0)));
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}
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void testSomeIntegers(LogbFunc func) {
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EXPECT_FP_EQ(T(1.0), func(T(3.0)));
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EXPECT_FP_EQ(T(1.0), func(T(-3.0)));
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EXPECT_FP_EQ(T(2.0), func(T(7.0)));
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EXPECT_FP_EQ(T(2.0), func(T(-7.0)));
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EXPECT_FP_EQ(T(3.0), func(T(10.0)));
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EXPECT_FP_EQ(T(3.0), func(T(-10.0)));
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EXPECT_FP_EQ(T(4.0), func(T(31.0)));
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EXPECT_FP_EQ(T(4.0), func(T(-31.0)));
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EXPECT_FP_EQ(T(5.0), func(T(55.0)));
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EXPECT_FP_EQ(T(5.0), func(T(-55.0)));
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}
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void testRange(LogbFunc func) {
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using UIntType = typename FPBits::UIntType;
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constexpr UIntType COUNT = 10000000;
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constexpr UIntType STEP = UIntType(-1) / COUNT;
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for (UIntType i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
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T x = static_cast<T>(FPBits(v));
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if (isnan(x) || isinf(x) || x == 0.0l)
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continue;
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int exponent;
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__llvm_libc::fputil::frexp(x, exponent);
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ASSERT_FP_EQ(T(exponent), func(x) + T(1.0));
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}
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}
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};
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#define LIST_LOGB_TESTS(T, func) \
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using LlvmLibcLogbTest = LogbTest<T>; \
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TEST_F(LlvmLibcLogbTest, SpecialNumbers) { testSpecialNumbers(&func); } \
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TEST_F(LlvmLibcLogbTest, PowersOfTwo) { testPowersOfTwo(&func); } \
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TEST_F(LlvmLibcLogbTest, SomeIntegers) { testSomeIntegers(&func); } \
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TEST_F(LlvmLibcLogbTest, InRange) { testRange(&func); }
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