ref: c47ff0a1a12dbf6ebeb5aac05d0811ef1e1a0455
dir: /libc/src/isxdigit.c/
/* See LICENSE file for copyright and license details. */ #define __USE_MACROS #include <ctype.h> #undef isxdigit int isxdigit(int c) { return __ctype[(unsigned char) c] & (_D|_X); }