edbd93d370
All of the functions I've previously implemented return an unsigned int; not the parameter type.
55 lines
2.4 KiB
C++
55 lines
2.4 KiB
C++
//===-- Unittests for stdbit ----------------------------------------------===//
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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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// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "test/UnitTest/Test.h"
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/*
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* The intent of this test is validate that:
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* 1. We provide the definition of the various type generic macros of stdbit.h
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* (the macros are transitively included from stdbit-macros.h by stdbit.h).
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* 2. It dispatches to the correct underlying function.
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* Because unit tests build without public packaging, the object files produced
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* do not contain non-namespaced symbols.
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*/
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/*
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* Declare these BEFORE including stdbit-macros.h so that this test may still be
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* run even if a given target doesn't yet have these individual entrypoints
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* enabled.
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*/
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extern "C" {
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unsigned stdc_leading_zeros_uc(unsigned char) noexcept { return 0xAAU; }
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unsigned stdc_leading_zeros_us(unsigned short) noexcept { return 0xABU; }
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unsigned stdc_leading_zeros_ui(unsigned) noexcept { return 0xACU; }
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unsigned stdc_leading_zeros_ul(unsigned long) noexcept { return 0xADU; }
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unsigned stdc_leading_zeros_ull(unsigned long long) noexcept { return 0xAFU; }
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unsigned stdc_leading_ones_uc(unsigned char) noexcept { return 0xBAU; }
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unsigned stdc_leading_ones_us(unsigned short) noexcept { return 0xBBU; }
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unsigned stdc_leading_ones_ui(unsigned) noexcept { return 0xBCU; }
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unsigned stdc_leading_ones_ul(unsigned long) noexcept { return 0xBDU; }
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unsigned stdc_leading_ones_ull(unsigned long long) noexcept { return 0xBFU; }
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}
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#include "include/llvm-libc-macros/stdbit-macros.h"
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TEST(LlvmLibcStdbitTest, TypeGenericMacroLeadingZeros) {
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EXPECT_EQ(stdc_leading_zeros(static_cast<unsigned char>(0U)), 0xAAU);
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EXPECT_EQ(stdc_leading_zeros(static_cast<unsigned short>(0U)), 0xABU);
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EXPECT_EQ(stdc_leading_zeros(0U), 0xACU);
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EXPECT_EQ(stdc_leading_zeros(0UL), 0xADU);
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EXPECT_EQ(stdc_leading_zeros(0ULL), 0xAFU);
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}
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TEST(LlvmLibcStdbitTest, TypeGenericMacroLeadingOnes) {
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EXPECT_EQ(stdc_leading_ones(static_cast<unsigned char>(0U)), 0xBAU);
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EXPECT_EQ(stdc_leading_ones(static_cast<unsigned short>(0U)), 0xBBU);
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EXPECT_EQ(stdc_leading_ones(0U), 0xBCU);
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EXPECT_EQ(stdc_leading_ones(0UL), 0xBDU);
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EXPECT_EQ(stdc_leading_ones(0ULL), 0xBFU);
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}
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