libiberty/memset.c

   1 /* memset
   2    This implementation is in the public domain.  */
   3
   4 /*
   5
   6 @deftypefn Supplemental void* memset (void *@var{s}, int @var{c}, size_t @var{count})
   7
   8 Sets the first @var{count} bytes of @var{s} to the constant byte
   9 @var{c}, returning a pointer to @var{s}.
  10
  11 @end deftypefn
  12
  13 */
  14
  15 #include <ansidecl.h>
  16 #ifdef __STDC__
  17 #include <stddef.h>
  18 #else
  19 #define size_t unsigned long
  20 #endif
  21
  22 PTR
  23 DEFUN(memset, (dest, val, len),
  24       PTR dest AND register int val AND register size_t len)
  25 {
  26   register unsigned char *ptr = (unsigned char*)dest;
  27   while (len-- > 0)
  28     *ptr++ = val;
  29   return dest;
  30 }