ref: c44455837e96883ea70d4f2a4372fba805071135 dir: /lib/c/src/tolower.c/
/* See LICENSE file for copyright and license details. */ #define __USE_MACROS #include <ctype.h> #undef tolower int tolower(int c) { return (isupper(c)) ? c | 0x20 : c; }