shithub: scc

ref: 4975fa36bb99219effb418cceec5382258d9b368
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);
}