shithub: scc

ref: d67fed0206b549caacc6c418aab0ac1a6bf6b9fc
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;
}