libc/string/memccpy.c

   1 /*
   2  * Copyright (C) 2002     Manuel Novoa III
   3  * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
   4  *
   5  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   6  */
   7
   8 /* No wide analog. */
   9
  10 #include "_string.h"
  11
  12 void *memccpy(void * __restrict s1, const void * __restrict s2, int c, size_t n)
  13 {
  14         register char *r1 = s1;
  15         register const char *r2 = s2;
  16
  17         while (n-- && (((unsigned char)(*r1++ = *r2++)) != ((unsigned char) c)));
  18
  19         return (n == (size_t) -1) ? NULL : r1;
  20 }
  21 libc_hidden_def(memccpy)