toolchain/gcc/newlib/libc/string/bzero.c

   1 /*
   2 FUNCTION
   3 <<bzero>>---initialize memory to zero
   4
   5 INDEX
   6         bzero
   7
   8 ANSI_SYNOPSIS
   9         #include <string.h>
  10         void bzero(void *<[b]>, size_t <[length]>);
  11
  12 TRAD_SYNOPSIS
  13         #include <string.h>
  14         void bzero(<[b]>, <[length]>)
  15         void *<[b]>;
  16         size_t <[length]>;
  17
  18 DESCRIPTION
  19 <<bzero>> initializes <[length]> bytes of memory, starting at address
  20 <[b]>, to zero.
  21
  22 RETURNS
  23 <<bzero>> does not return a result.
  24
  25 PORTABILITY
  26 <<bzero>> is in the Berkeley Software Distribution.
  27 Neither ANSI C nor the System V Interface Definition (Issue 2) require
  28 <<bzero>>.
  29
  30 <<bzero>> requires no supporting OS subroutines.
  31 */
  32
  33 #include <string.h>
  34
  35 _VOID
  36 _DEFUN (bzero, (b, length),
  37         void *b _AND
  38         size_t length)
  39 {
  40   char *ptr = (char *)b;
  41   while (length--)
  42     *ptr++ = 0;
  43 }