Make all bucket and overflow addresses unsigned

[unix-history] / usr / src / lib / libc / string / swab.c

/*
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jeffrey Mogul.
*
* %sccs.include.redist.c%
*/

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)swab.c      5.10 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <string.h>

void
swab(from, to, len)
       const void *from;
       void *to;
       size_t len;
{
       register unsigned long temp;
       register int n;
       register char *fp, *tp;

       n = (len >> 1) + 1;
       fp = (char *)from;
       tp = (char *)to;
#define STEP    temp = *fp++,*tp++ = *fp++,*tp++ = temp
       /* round to multiple of 8 */
       while ((--n) & 07)
               STEP;
       n >>= 3;
       while (--n >= 0) {
               STEP; STEP; STEP; STEP;
               STEP; STEP; STEP; STEP;
       }
}