Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hplsla!jima
From: jima@hplsla.HP.COM (Jim Adcock)
Newsgroups: comp.lang.c++
Subject: Re: ?-tion on sizeof classes
Message-ID: <6590155@hplsla.HP.COM>
Date: 19 Jun 89 16:05:02 GMT
References: <2425@blake.acs.washington.edu>
Organization: HP Lake Stevens, WA
Lines: 11

> The reason I ask is that it would sure be nice if I could assume
> 	sizeof(Complex) == 2*sizeof(double)
> because this is what a LOT of FORTRAN routines assume.  FFT
> routines, for example, routinely treat an N point complex vector as
> a 2N real vector.  

I suspect that most machines will find C++ and FORTRAN complex numbers 
compatible for equivalent precisions.  Using FORTRAN matrix routines 
might be more difficult -- but it shouldn't be hard to write a wrapper
class with most of its stuff in-line.  Perhaps someone is already trying
this?