shithub: scc

ref: 5b9d9b6057b4ebdb7d4590c849607f6d0765c00c
dir: /lib/c/toupper.c/

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#define __USE_MACROS
#include <ctype.h>
#undef toupper

int
toupper(int c)
{
	return (islower(c)) ? c & ~0x20 : c;
}