shithub: scc

ref: 9fbfbfa441fb3354422e52928d7f3af02d1ea2ad
dir: /lib/c/isupper.c/

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

int
isupper(int c)
{
	return (__ctype+1)[c] & _U;
}