39 lines
720 B
C
39 lines
720 B
C
/* $Id$ */
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/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* clear - clear a block of memory, and try to do it fast.
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*/
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#include "alloc.h"
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/* instead of Calloc: */
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void
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clear(ptr, n)
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register char *ptr;
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register unsigned int n;
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{
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register long *q = (long *) ptr;
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while (n >= 8*sizeof (long)) {
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/* high-speed clear loop */
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*q++ = 0;
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*q++ = 0;
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*q++ = 0;
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*q++ = 0;
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*q++ = 0;
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*q++ = 0;
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*q++ = 0;
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*q++ = 0;
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n -= 8*sizeof (long);
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}
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while (n >= sizeof (long)) {
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/* high-speed clear loop */
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*q++ = 0;
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n -= sizeof (long);
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}
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ptr = (char *) q;
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while (n--) *ptr++ = '\0';
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}
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