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/*
* Copyright (c) 2025 Robert Clausecker <fuz@FreeBSD.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <limits.h>
#include <stdbit.h>
unsigned char
stdc_bit_floor_uc(unsigned char x)
{
if (x == 0)
return (0);
return (1U << (UINT_WIDTH - __builtin_clz(x) - 1));
}
unsigned short
stdc_bit_floor_us(unsigned short x)
{
if (x == 0)
return (0);
return (1U << (UINT_WIDTH - __builtin_clz(x) - 1));
}
unsigned int
stdc_bit_floor_ui(unsigned int x)
{
if (x == 0)
return (0);
return (1U << (UINT_WIDTH - __builtin_clz(x) - 1));
}
unsigned long
stdc_bit_floor_ul(unsigned long x)
{
if (x == 0)
return (0);
return (1UL << (ULONG_WIDTH - __builtin_clzl(x) - 1));
}
unsigned long long
stdc_bit_floor_ull(unsigned long long x)
{
if (x == 0)
return (0);
return (1ULL << (ULLONG_WIDTH - __builtin_clzll(x) - 1));
}
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