src/system/libroot/posix/string/memchr.c

   1 /*
   2 ** Copyright 2001, Manuel J. Petit. All rights reserved.
   3 ** Distributed under the terms of the NewOS License.
   4 */
   5
   6 #include <sys/types.h>
   7 #include <string.h>
   8
   9
  10 void *
  11 memchr(void const *buf, int c, size_t len)
  12 {
  13         unsigned char const *b = buf;
  14         unsigned char x = (c&0xff);
  15         size_t i;
  16
  17         for (i = 0; i < len; i++) {
  18                 if (b[i] == x)
  19                         return (void*)(b + i);
  20         }
  21
  22         return NULL;
  23 }
  24