ref: 8b178526d17c09010b94b2c6655c0c98648a2f68
dir: /lib/c/src/toupper.c/
/* See LICENSE file for copyright and license details. */
#define __USE_MACROS
#include <ctype.h>
#undef toupper
int
toupper(int c)
{
return (islower(c)) ? c & ~0x20 : c;
}