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 #include <stddef.h>
  17
  18 /* For systems with larger pointers than ints, this must be declared.  */
  19 void *malloc (size_t);
  20 void bzero (void *, size_t);
  21
  22 void *
  23 calloc (size_t nelem, size_t elsize)
  24 {
  25   register void *ptr;
  26
  27   if (nelem == 0 || elsize == 0)
  28     nelem = elsize = 1;
  29
  30   ptr = malloc (nelem * elsize);
  31   if (ptr) bzero (ptr, nelem * elsize);
  32
  33   return ptr;
  34 }