| 1 | /* memset |
| 2 | This implementation is in the public domain. */ |
| 3 | |
| 4 | /* |
| 5 | |
| 6 | @deftypefn Supplemental void* memset (void *@var{s}, int @var{c}, size_t @var{count}) |
| 7 | |
| 8 | Sets the first @var{count} bytes of @var{s} to the constant byte |
| 9 | @var{c}, returning a pointer to @var{s}. |
| 10 | |
| 11 | @end deftypefn |
| 12 | |
| 13 | */ |
| 14 | |
| 15 | #include <ansidecl.h> |
| 16 | #ifdef __STDC__ |
| 17 | #include <stddef.h> |
| 18 | #else |
| 19 | #define size_t unsigned long |
| 20 | #endif |
| 21 | |
| 22 | PTR |
| 23 | DEFUN(memset, (dest, val, len), |
| 24 | PTR dest AND register int val AND register size_t len) |
| 25 | { |
| 26 | register unsigned char *ptr = (unsigned char*)dest; |
| 27 | while (len-- > 0) |
| 28 | *ptr++ = val; |
| 29 | return dest; |
| 30 | } |