shithub: scc

ref: c863f70762d5c00224431259e92b0eb5114b2b61
dir: /src/libc/ctype/isalnum.c/

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#include <ctype.h>
#undef isalnum

int
isalnum(int c)
{
	return (__ctype+1)[c] & (_U|_L|_D);
}