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1//===-- Unittests for stdbit ----------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9/*10 * The intent of this test is validate that:11 * 1. We provide the definition of the various type generic macros of stdbit.h12 * (the macros are transitively included from stdbit-macros.h by stdbit.h).13 * 2. It dispatches to the correct underlying function.14 * Because unit tests build without public packaging, the object files produced15 * do not contain non-namespaced symbols.16 */17 18/*19 * Declare these BEFORE including stdbit-macros.h so that this test may still be20 * run even if a given target doesn't yet have these individual entrypoints21 * enabled.22 */23#include "stdbit_stub.h"24 25#include "include/llvm-libc-macros/stdbit-macros.h"26 27#include <assert.h>28 29#define CHECK_FUNCTION(FUNC_NAME, VAL) \30 do { \31 assert(FUNC_NAME((unsigned char)0U) == VAL##AU); \32 assert(FUNC_NAME((unsigned short)0U) == VAL##BU); \33 assert(FUNC_NAME(0U) == VAL##CU); \34 assert(FUNC_NAME(0UL) == VAL##DU); \35 assert(FUNC_NAME(0ULL) == VAL##EU); \36 } while (0)37 38int main(void) {39 CHECK_FUNCTION(stdc_leading_zeros, 0xA);40 CHECK_FUNCTION(stdc_leading_ones, 0xB);41 CHECK_FUNCTION(stdc_trailing_zeros, 0xC);42 CHECK_FUNCTION(stdc_trailing_ones, 0xD);43 CHECK_FUNCTION(stdc_first_leading_zero, 0xE);44 CHECK_FUNCTION(stdc_first_leading_one, 0xF);45 CHECK_FUNCTION(stdc_first_trailing_zero, 0x0);46 CHECK_FUNCTION(stdc_first_trailing_one, 0x1);47 CHECK_FUNCTION(stdc_count_zeros, 0x2);48 CHECK_FUNCTION(stdc_count_ones, 0x3);49 50 assert(!stdc_has_single_bit((unsigned char)1U));51 assert(!stdc_has_single_bit((unsigned short)1U));52 assert(!stdc_has_single_bit(1U));53 assert(!stdc_has_single_bit(1UL));54 assert(!stdc_has_single_bit(1ULL));55 56 CHECK_FUNCTION(stdc_bit_width, 0x4);57 CHECK_FUNCTION(stdc_bit_floor, 0x5);58 CHECK_FUNCTION(stdc_bit_ceil, 0x6);59 60 return 0;61}62