From -6030319343756856169 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 109fba,9a5d91576ea14293 X-Google-Attributes: gid109fba,public X-Google-Thread: f78e5,42ca30940288d269 X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 1992-02-28 14:46:21 PST Xref: sparky comp.lang.c++:5386 comp.std.c++:248 Newsgroups: comp.lang.c++,comp.std.c++ Path: sparky!uunet!zaphod.mps.ohio-state.edu!mips!wdl1!wdl39!mab From: mab@wdl39.wdl.loral.com (Mark A Biggar) Subject: Re: X to the Y power, how? Message-ID: <1992Feb28.223749.2358@wdl.loral.com> Sender: news@wdl.loral.com Organization: Loral Western Development Labs References: <1992Feb27.223558.276@rice.edu> <22292@alice.att.com> Date: Fri, 28 Feb 1992 22:37:49 GMT In article jbuck@forney.berkeley.edu (Joe Buck) writes: >In article <22292@alice.att.com>, bs@alice.att.com (Bjarne Stroustrup) writes: [group 2 is pow(float,int) etc.] >..For group 2 (floating base >raised to integral power), the first may be negative as long as >the second argument is zero or positive. If both arguments are >negative the result is undefined. Why is (-2.0)@-2 undefined. Isn't it equal to -0.25? I thought there was a problem only with fractional exponents of negitive numbers not negitive integral exponents. -- Mark Biggar mab@wdl1.wdl.loral.com