ref: 9e2ce8d610b9eacac34979540ed8f6dea47b0ed2
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);
}