mango/include/socks/util.h

#ifndef SOCKS_UTIL_H_
#define SOCKS_UTIL_H_

#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>

#ifdef __cplusplus
extern "C" {
#endif

#define MIN(x, y) ((x) < (y) ? (x) : (y))
#define MAX(x, y) ((x) > (y) ? (x) : (y))
#define CLAMP(x, lo, hi) (MIN(MAX(x, lo), hi))

extern uint64_t hash_string(const char *s);
extern void data_size_to_string(size_t value, char *out, size_t outsz);
static inline bool power_of_2(size_t x) { return (x > 0 && (x & (x - 1)) == 0); }
static inline unsigned long long div64_pow2(unsigned long long x, unsigned long long y)
{
	return x >> (__builtin_ctz(y));
}

static inline unsigned long long absdiff64(unsigned long long x, unsigned long long y)
{
	return x > y ? y - x : x - y;
}

#ifdef __cplusplus
}
#endif

#endif