Article View: comp.std.c
Article #560Re: subtraction between unsigned ints
From: Walter Murray
Date: Sat, 09 Sep 1989 00:37
Date: Sat, 09 Sep 1989 00:37
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Norman Diamond writes: >>Does pANSI defines the datatype of the result of subtraction >>between unsigned integers? Would it be also unsigned? Then >>what would be the result of subtraction of a number from a >>smaller number? >It always has been unsigned, even in K&R days. pANS says that the >result must wrap around modulo some power of 2; this was not required >by K&R but surely always occured. I think it was required by K&R. See Appendix A, section 6.5, in the first edition (page 184). Walter Murray --
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!apple!motcsd!hpda!hpcuhb!hpcllla!hpclisp!hpclwjm!walter From: walter@hpclwjm.HP.COM (Walter Murray) Newsgroups: comp.std.c Subject: Re: subtraction between unsigned ints Message-ID: <12570024@hpclwjm.HP.COM> Date: 9 Sep 89 00:37:49 GMT References: <KURO.89Sep5111940@shochu.Sun.Com> Organization: Hewlett-Packard Calif. Language Lab Lines: 16