shithub: scc

ref: a9d67e014c29b320aeebc0b1e8bdf377cd9f5c0d
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;
}