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From: john@spectre.unm.edu (John Prentice)
Newsgroups: comp.lang.fortran
Subject: Re: Need complex matrix solver for CM
Message-ID: <1991Jun28.192324.20512@ariel.unm.edu>
Date: 28 Jun 91 19:23:24 GMT
References: <1991Jun27.190724.26161@ariel.unm.edu> <7887@mace.cc.purdue.edu> <1991Jun28.061454.29461@fs7.ece.cmu.edu>
Organization: Dept. of Math & Stat, University of New Mexico, Albuquerque
Lines: 28

In article <1991Jun28.061454.29461@fs7.ece.cmu.edu> winstead@faraday.ece.cmu.edu (Charles Holden Winstead) writes:
>>In article <1991Jun27.190724.26161@ariel.unm.edu> john@spectre.unm.edu (John Prentice) writes:
>>linear system twice as large. If you need a High School math reminder:
>                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
>
>Yo dude, grow up!  I agree that it's a simple task of changing a complex 
>linear system into a real one, but with a language that deals with complex
>numbers as nicely as fortran does, let's agree that there are some benefits
>to not switching from complex to real and back again repeatedly.  Why not
>just look through the code that works for real matrices and change the 
>corresponding variable declaration from real to complex.
>

The first time you come across a piece of code in a matrix solver that
checks to see what sign a real number is, how are you going to change this
to handle complex numbers?  It takes more than just changing the variable
declarations.  In either case, it is a sterile argument.  I judge it to
be preferential in my situation to use complex numbers and I don't 
particularly feel compelled to argue about it.  I am certainly not 
proselytizing that this is the only way to do it.

Peace!

John
-- 
John K. Prentice    john@spectre.unm.edu (Internet)
Computational Physics Group
Amparo Corporation, Albuquerque, NM