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From: john@ghostwheel.unm.edu (John Prentice)
Newsgroups: comp.lang.fortran
Subject: Re: Re Dumb behaviour in Sun Fortran v1.3.1
Message-ID: <1991Feb21.180705.28800@ariel.unm.edu>
Date: 21 Feb 91 18:07:05 GMT
References: <14423@ganymede.inmos.co.uk>
Organization: University of New Mexico, Albuquerque, NM
Lines: 33

In article <14423@ganymede.inmos.co.uk> steveh@inmos.co.uk () writes:
>
>
>     By the way, talking of complex numbers in FORTRAN, does anybody
>know what sort of applications would use the following:
>
>    complex / complex
>
>and expecially
>
>    complex ** complex
>
>

complex/complex is hardly unusual!  Pick up a book on complex mathematics
and just glance through the pages.  A couple examples,
   1) expressing the analytical result of many series expansions
   2) most (?) complex valued integrals
   3) quantum scattering theory (just to give an example from physics)
etc...

As for complex**complex, it is again not particularly uncommon.  I
don't have an example handy right now, but look in a good integral table
(say Gradshteyn and Ryzhik) and see how many cases they show of this
type of integral.  They are there for a reason!

John


--
John K. Prentice    john@unmfys.unm.edu (Internet)
Dept. of Physics and Astronomy, University of New Mexico, Albuquerque, NM, USA
Computational Physics Group, Amparo Corporation, Albuquerque, NM, USA