newlib/winsup/cygwin/include/asm/byteorder.h

65 lines
1.5 KiB
C

/* asm/byteorder.h
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _I386_BYTEORDER_H
#define _I386_BYTEORDER_H
#include <stdint.h>
#include <machine/endian.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef __LITTLE_ENDIAN_BITFIELD
#define __LITTLE_ENDIAN_BITFIELD
#endif
extern uint32_t ntohl(uint32_t);
extern uint16_t ntohs(uint16_t);
extern uint32_t htonl(uint32_t);
extern uint16_t htons(uint16_t);
#define __constant_ntohl(x) \
((uint32_t)((((uint32_t)(x) & 0x000000ffU) << 24) | \
(((uint32_t)(x) & 0x0000ff00U) << 8) | \
(((uint32_t)(x) & 0x00ff0000U) >> 8) | \
(((uint32_t)(x) & 0xff000000U) >> 24)))
#define __constant_ntohs(x) \
((uint16_t)((((uint16_t)(x) & 0x00ff) << 8) | \
(((uint16_t)(x) & 0xff00) >> 8))) \
#define __constant_htonl(x) __constant_ntohl(x)
#define __constant_htons(x) __constant_ntohs(x)
#if defined (__OPTIMIZE__) && !defined (__NO_INLINE__)
# define ntohl(x) \
(__builtin_constant_p((long)(x)) ? \
__constant_ntohl((x)) : \
__ntohl((x)))
# define ntohs(x) \
(__builtin_constant_p((short)(x)) ? \
__constant_ntohs((x)) : \
__ntohs((x)))
# define htonl(x) \
(__builtin_constant_p((long)(x)) ? \
__constant_htonl((x)) : \
__htonl((x)))
# define htons(x) \
(__builtin_constant_p((short)(x)) ? \
__constant_htons((x)) : \
__htons((x)))
#endif
#ifdef __cplusplus
}
#endif
#endif