33 lines
662 B
C
33 lines
662 B
C
/*
|
|
|
|
@deftypefn Supplemental char* strdup (const char *@var{s})
|
|
|
|
Returns a pointer to a copy of @var{s} in memory obtained from
|
|
@code{malloc}, or @code{NULL} if insufficient memory was available.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
#include <ansidecl.h>
|
|
#ifdef ANSI_PROTOTYPES
|
|
#include <stddef.h>
|
|
#else
|
|
#define size_t unsigned long
|
|
#endif
|
|
|
|
extern size_t strlen PARAMS ((const char*));
|
|
extern PTR malloc PARAMS ((size_t));
|
|
extern PTR memcpy PARAMS ((PTR, const PTR, size_t));
|
|
|
|
char *
|
|
strdup(s)
|
|
const char *s;
|
|
{
|
|
size_t len = strlen (s) + 1;
|
|
char *result = (char*) malloc (len);
|
|
if (result == (char*) 0)
|
|
return (char*) 0;
|
|
return (char*) memcpy (result, s, len);
|
|
}
|