ref: 51726ed12da4175bb9f73f8bf72e02fe5a816fd1
dir: /lib/c/src/isalnum.c/
/* See LICENSE file for copyright and license details. */
#define __USE_MACROS
#include <ctype.h>
#undef isalnum
int
isalnum(int c)
{
return __ctype[(unsigned char) c] & (_U|_L|_D);
}