[thirdparty/gcc.git] / libiberty / calloc.c

/* calloc -- allocate memory which has been initialized to zero.
   This function is in the public domain. */

/*

@deftypefn Supplemental void* calloc (size_t @var{nelem}, size_t @var{elsize})

Uses @code{malloc} to allocate storage for @var{nelem} objects of
@var{elsize} bytes each, then zeros the memory.

@end deftypefn

*/
 
#include "ansidecl.h"
#ifdef ANSI_PROTOTYPES
#include <stddef.h>
#else
#define size_t unsigned long
#endif

/* For systems with larger pointers than ints, this must be declared.  */
PTR malloc PARAMS ((size_t));
void bzero PARAMS ((PTR, size_t));

PTR
calloc (nelem, elsize)
  size_t nelem, elsize;
{
  register PTR ptr;  

  if (nelem == 0 || elsize == 0)
    nelem = elsize = 1;
  
  ptr = malloc (nelem * elsize);
  if (ptr) bzero (ptr, nelem * elsize);
  
  return ptr;
}
Commit	Line	Data
3da5522a KG	1	/* calloc -- allocate memory which has been initialized to zero.
3da5522a KG	2	This function is in the public domain. */
aaa5f039 DD	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	*/
3da5522a	14
a9acf741	15	#include "ansidecl.h"
a9acf741 KG	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));
c9ac9147	24	void bzero PARAMS ((PTR, size_t));
a9acf741 KG	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	}