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35 lines
774 B
C
35 lines
774 B
C
/* File : memset.c
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Author : Richard A. O'Keefe.
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Updated: 25 May 1984
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Defines: memset()
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memset(dst, chr, len)
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fills the memory area dst[0..len-1] with len bytes all equal to chr.
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The result is dst. See also bfill(), which has no return value and
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puts the last two arguments the other way around.
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Note: the VAX assembly code version can only handle 0 <= len < 2^16.
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It is presented for your interest and amusement.
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*/
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#include "strings.h"
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#if VaxAsm
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char *memset(char *dst,int chr, int len)
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{
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asm("movc5 $0,*4(ap),8(ap),12(ap),*4(ap)");
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return dst;
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}
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#else ~VaxAsm
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char *memset(char *dst, register pchar chr, register int len)
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{
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register char *d;
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for (d = dst; --len >= 0; *d++ = chr) ;
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return dst;
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}
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#endif VaxAsm
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