70 lines
1.3 KiB
C
70 lines
1.3 KiB
C
#ifdef MALLOC_PROVIDED
|
|
int _dummy_calloc = 1;
|
|
#else
|
|
/*
|
|
FUNCTION
|
|
<<calloc>>---allocate space for arrays
|
|
|
|
INDEX
|
|
calloc
|
|
|
|
INDEX
|
|
_calloc_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <stdlib.h>
|
|
void *calloc(size_t <[n]>, size_t <[s]>);
|
|
void *calloc_r(void *<[reent]>, size_t <n>, <size_t> <[s]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <stdlib.h>
|
|
char *calloc(<[n]>, <[s]>)
|
|
size_t <[n]>, <[s]>;
|
|
|
|
char *_calloc_r(<[reent]>, <[n]>, <[s]>)
|
|
char *<[reent]>;
|
|
size_t <[n]>;
|
|
size_t <[s]>;
|
|
|
|
|
|
|
|
DESCRIPTION
|
|
Use <<calloc>> to request a block of memory sufficient to hold an
|
|
array of <[n]> elements, each of which has size <[s]>.
|
|
|
|
The memory allocated by <<calloc>> comes out of the same memory pool
|
|
used by <<malloc>>, but the memory block is initialized to all zero
|
|
bytes. (To avoid the overhead of initializing the space, use
|
|
<<malloc>> instead.)
|
|
|
|
The alternate function <<_calloc_r>> is reentrant.
|
|
The extra argument <[reent]> is a pointer to a reentrancy structure.
|
|
|
|
RETURNS
|
|
If successful, a pointer to the newly allocated space.
|
|
|
|
If unsuccessful, <<NULL>>.
|
|
|
|
PORTABILITY
|
|
<<calloc>> is ANSI.
|
|
|
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
|
|
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
_PTR
|
|
_DEFUN (calloc, (n, size),
|
|
size_t n _AND
|
|
size_t size)
|
|
{
|
|
return _calloc_r (_REENT, n, size);
|
|
}
|
|
|
|
#endif
|
|
#endif /* MALLOC_PROVIDED */
|