libiberty/calloc.c

   1 /* calloc -- allocate memory which has been initialized to zero.
   2    This function is in the public domain. */
   3
   4 /*
   5
   6 @deftypefn Supplemental void* calloc (size_t @var{nelem}, size_t @var{elsize})
   7
   8 Uses @code{malloc} to allocate storage for @var{nelem} objects of
   9 @var{elsize} bytes each, then zeros the memory.
  10
  11 @end deftypefn
  12
  13 */
  14
  15 #include "ansidecl.h"
  16 #ifdef ANSI_PROTOTYPES
  17 #include <stddef.h>
  18 #else
  19 #define size_t unsigned long
  20 #endif
  21
  22 /* For systems with larger pointers than ints, this must be declared.  */
  23 PTR malloc PARAMS ((size_t));
  24 void bzero PARAMS ((PTR, size_t));
  25
  26 PTR
  27 calloc (nelem, elsize)
  28   size_t nelem, elsize;
  29 {
  30   register PTR ptr;
  31
  32   if (nelem == 0 || elsize == 0)
  33     nelem = elsize = 1;
  34
  35   ptr = malloc (nelem * elsize);
  36   if (ptr) bzero (ptr, nelem * elsize);
  37
  38   return ptr;
  39 }