shithub: scc

ref: 1c8ba5d798e7676ca4240e73db7fc36cbcfecdbb
dir: /src/libc/ctype/isdigit.c/

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#include <ctype.h>
#undef isdigit

int
isdigit(int c)
{
	return (__ctype+1)[c] & (_D);
}