Category : C Source Code
Archive   : E_C_STR.ZIP
Filename : MEMSET.C

/* File : memset.c
Author : Richard A. O'Keefe.
Updated: 25 May 1984
Defines: memset()

memset(dst, chr, len)
fills the memory area dst[0..len-1] with len bytes all equal to chr.
The result is dst. See also bfill(), which has no return value and
puts the last two arguments the other way around.

Note: the VAX assembly code version can only handle 0 <= len < 2^16.
It is presented for your interest and amusement.
*/

#include "strings.h"

#if VaxAsm

char *memset(dst, chr, len)
char *dst;
int chr; /* should be char */
int len;
{
asm("movc5 $0,*4(ap),8(ap),12(ap),*4(ap)");
return dst;
}

#else ~VaxAsm

char *memset(dst, chr, len)
char *dst;
register int chr; /* should be char */
register int len;
{
register char *d;

for (d = dst; --len >= 0; *d++ = chr) ;
return dst;
}

#endif VaxAsm