shithub: scc

ref: 28bcaf2f4432e8d4ec3b224cf99cf4a19c60bb1a
dir: /lib/c/src/isupper.c/

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

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