usr/src/lib/libc/string/memccpy.c

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)memccpy.c   5.7 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <sys/cdefs.h>
#include <string.h>

void *
memccpy(t, f, c, n)
        void *t;
        const void *f;
        int c;
        register size_t n;
{

        if (n) {
                register unsigned char *t;
                register const unsigned char *f;
                register unsigned char ch = c;

                do {
                        if ((*t++ = *f++) == c)
                                return (t);
                } while (--n != 0);
        }
        return (0);
}