| 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 | PTR malloc (size_t); |
| 20 | void bzero (PTR, size_t); |
| 21 | |
| 22 | PTR |
| 23 | calloc (size_t nelem, size_t elsize) |
| 24 | { |
| 25 | register PTR 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 | } |