Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!comp.vuw.ac.nz!virtue!canterbury.ac.nz!fore057
From: fore057@canterbury.ac.nz
Newsgroups: comp.lang.prolog
Subject: Re: HELP!!  Need a square root function/predicate in Prolog
Message-ID: <1990Aug9.182105.8890@canterbury.ac.nz>
Date: 9 Aug 12 18:21:04 GMT
References: <1990Aug08.001233.6587@hoss.unl.edu>
Organization: University of Canterbury
Lines: 19

In article <1990Aug08.001233.6587@hoss.unl.edu>, sanjiv@fergvax.unl.edu (Sanjiv K. Bhatia) writes:
> Hi there:
> 
> I am working on some experiments using Prolog and need a square root function.
> Will some kind soul mail me a copy of the same if you happen to have one handy?
> 
> Thanks in advance.
> 
> Sanjiv
> Sanjiv K. Bhatia				Department of Computer Science
> sanjiv@fergvax.unl.edu				Ferguson Hall 115
> voice: (402)-472-3485				University of Nebraska - Lincoln
> fax  : (402)-472-7767				Lincoln, NE 68588-0115

If you have log and exponential functions in your prolog version, the following
will give you X to any power Y:

     powerOf(X,Y,Ans):-
             Ans=EXP(Y*LN(X)).