shithub: scc

ref: 4ddb383f2b1ea7f017404f94e9e2683af3bcc43f
dir: /src/libc/ctype/isupper.c/

#include <ctype.h>
#undef isupper

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