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//===-- Unittests for stdbit ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/*
* The intent of this test is validate that:
* 1. We provide the definition of the various type generic macros of stdbit.h
* (the macros are transitively included from stdbit-macros.h by stdbit.h).
* 2. It dispatches to the correct underlying function.
* Because unit tests build without public packaging, the object files produced
* do not contain non-namespaced symbols.
*/
/*
* Declare these BEFORE including stdbit-macros.h so that this test may still be
* run even if a given target doesn't yet have these individual entrypoints
* enabled.
*/
#include "stdbit_stub.h"
#include "include/llvm-libc-macros/stdbit-macros.h"
#include <assert.h>
#define CHECK_FUNCTION(FUNC_NAME, VAL) \
do { \
assert(FUNC_NAME((unsigned char)0U) == VAL##AU); \
assert(FUNC_NAME((unsigned short)0U) == VAL##BU); \
assert(FUNC_NAME(0U) == VAL##CU); \
assert(FUNC_NAME(0UL) == VAL##DU); \
assert(FUNC_NAME(0ULL) == VAL##EU); \
} while (0)
int main(void) {
CHECK_FUNCTION(stdc_leading_zeros, 0xA);
CHECK_FUNCTION(stdc_leading_ones, 0xB);
CHECK_FUNCTION(stdc_trailing_zeros, 0xC);
CHECK_FUNCTION(stdc_trailing_ones, 0xD);
CHECK_FUNCTION(stdc_first_leading_zero, 0xE);
CHECK_FUNCTION(stdc_first_leading_one, 0xF);
CHECK_FUNCTION(stdc_first_trailing_zero, 0x0);
CHECK_FUNCTION(stdc_first_trailing_one, 0x1);
CHECK_FUNCTION(stdc_count_zeros, 0x2);
CHECK_FUNCTION(stdc_count_ones, 0x3);
assert(!stdc_has_single_bit((unsigned char)1U));
assert(!stdc_has_single_bit((unsigned short)1U));
assert(!stdc_has_single_bit(1U));
assert(!stdc_has_single_bit(1UL));
assert(!stdc_has_single_bit(1ULL));
CHECK_FUNCTION(stdc_bit_width, 0x4);
CHECK_FUNCTION(stdc_bit_floor, 0x5);
CHECK_FUNCTION(stdc_bit_ceil, 0x6);
return 0;
}
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