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// SPDX-License-Identifier: MIT
/*
* Copyright © 2013 Red Hat, Inc.
*/
#ifndef _UTIL_H_
#define _UTIL_H_
#include "config.h"
#include <stdbool.h>
#include <string.h>
#define LONG_BITS (sizeof(long) * 8)
#define NLONGS(x) (((x) + LONG_BITS - 1) / LONG_BITS)
#define ARRAY_LENGTH(a) (sizeof(a) / (sizeof((a)[0])))
#define unlikely(x) (__builtin_expect(!!(x),0))
#undef min
#undef max
#ifdef __GNUC__
#define min(a,b) \
({ __typeof__ (a) _a = (a); \
__typeof__ (b) _b = (b); \
_a > _b ? _b : _a; \
})
#define max(a,b) \
({ __typeof__ (a) _a = (a); \
__typeof__ (b) _b = (b); \
_a > _b ? _a : _b; \
})
#else
#define min(a,b) ((a) > (b) ? (b) : (a))
#define max(a,b) ((a) > (b) ? (a) : (b))
#endif
static inline bool
startswith(const char *str, size_t len, const char *prefix, size_t plen)
{
return len >= plen && !strncmp(str, prefix, plen);
}
static inline int
bit_is_set(const unsigned long *array, int bit)
{
return !!(array[bit / LONG_BITS] & (1LL << (bit % LONG_BITS)));
}
static inline void
set_bit(unsigned long *array, int bit)
{
array[bit / LONG_BITS] |= (1LL << (bit % LONG_BITS));
}
static inline void
clear_bit(unsigned long *array, int bit)
{
array[bit / LONG_BITS] &= ~(1LL << (bit % LONG_BITS));
}
static inline void
set_bit_state(unsigned long *array, int bit, int state)
{
if (state)
set_bit(array, bit);
else
clear_bit(array, bit);
}
#endif
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