Path: utzoo!utgpu!watmath!iuvax!mailrus!jarvis.csri.toronto.edu!dgp.toronto.edu!flaps
From: flaps@dgp.toronto.edu (Alan J Rosenthal)
Newsgroups: comp.lang.c
Subject: non-contiguous '0' .. '9'
Message-ID: <1989Aug30.143212.3987@jarvis.csri.toronto.edu>
Date: 30 Aug 89 18:32:12 GMT
Organization: Dynamic Graphics Project, University of Toronto
Lines: 13


I think the point wrt non-contiguous '0'..'9' is that you don't really gain
anything if they're contiguous.  Instead of
	#define val(c) ((c) - '0')
you can just use
	char digits[] = "0123456789";
	#define val(c) (strchr(digits, (c)) - digits)
and instead of
	#define str(n) ((n) + '0')
you can just use
	#define str(n) (digits[n])

ajr