ref: bc1d0b048c6c8de00d0b6362ce9a1a624f35349d
dir: /libc/src/isalpha.c/
/* See LICENSE file for copyright and license details. */
#define __USE_MACROS
#include <ctype.h>
#undef isalpha
int
isalpha(int c)
{
return __ctype[(unsigned char) c] & (_U|_L);
}