compiler/clib/memchr.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     ANSI C function memchr().
   6 */
   7
   8 #include <proto/exec.h>
   9
  10 /*****************************************************************************
  11
  12     NAME */
  13 #include <string.h>
  14
  15         void * memchr (
  16
  17 /*  SYNOPSIS */
  18         const void * mem,
  19         int          c,
  20         size_t       n)
  21
  22 /*  FUNCTION
  23         Copy the contents of a part of memory to another. Both areas
  24         must not overlap. If they do, use memmove().
  25
  26     INPUTS
  27         dest - The first byte of the destination area in memory
  28         src - The first byte of the source area in memory
  29         count - How many bytes to copy
  30
  31     RESULT
  32         dest.
  33
  34     NOTES
  35
  36     EXAMPLE
  37
  38     BUGS
  39
  40     SEE ALSO
  41
  42     INTERNALS
  43
  44 ******************************************************************************/
  45 {
  46     const char * ptr = (char *)mem;
  47
  48     while (n)
  49     {
  50         if (*ptr == c)
  51             return ((void *)ptr);
  52
  53         n --;
  54         ptr ++;
  55     }
  56
  57     return NULL;
  58 } /* memchr */
  59