ref: 51a1a378632b453d050c9be3afcf75fd2baa198c
dir: /include/cst_endian.h/
/*************************************************************************/
/* */
/* Language Technologies Institute */
/* Carnegie Mellon University */
/* Copyright (c) 1999 */
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/*************************************************************************/
/* Author: Alan W Black (awb@cs.cmu.edu) */
/* Date: August 2000 */
/*************************************************************************/
/* */
/* endianness */
/* */
/*************************************************************************/
#ifndef __CST_ENDIAN_H__
#define __CST_ENDIAN_H__
/* This gets set to 1 and we test where the on bit is to determine byteorder */
extern const int cst_endian_loc;
/* Sun, HP, SGI Mips, M68000, PowerPC, MIPS24K AR9331 (Yun Arduino, ZSun) */
#define CST_BIG_ENDIAN (((char *)&cst_endian_loc)[0] == 0)
/* Intel, Alpha, DEC Mips, Vax, ARM, Other MIPS (GCW-Zero, Ben Nanonote etc) */
#define CST_LITTLE_ENDIAN (((char *)&cst_endian_loc)[0] != 0)
/* Perq (from Three Rivers) has a third byte order -- but we have no support */
/* EST byte order strings */
#define BYTE_ORDER_BIG "10"
#define BYTE_ORDER_LITTLE "01"
#define SWAPINT(x) ((((unsigned int)x) & 0xff) << 24 | \
(((unsigned int)x) & 0xff00) << 8 | \
(((unsigned int)x) & 0xff0000) >> 8 | \
(((unsigned int)x) & 0xff000000) >> 24)
/* For m68k we want to be a little more explicit */
#define SWAPLONG(x) ((((unsigned long)x) & 0xff) << 24 | \
(((unsigned long)x) & 0xff00) << 8 | \
(((unsigned long)x) & 0xff0000) >> 8 | \
(((unsigned long)x) & 0xff000000) >> 24)
#define SWAPSHORT(x) ((((unsigned short)x) & 0xff) << 8 | \
(((unsigned short)x) & 0xff00) >> 8)
void swap_bytes_short(short * b,int n);
void swapdouble(double *d);
void swapfloat(float *f);
#endif