shithub: scc

ref: 4212f8a3ecf712dbf89c9449336bc5b3d9f2aaed
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;
}