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Re: complex arithmetic [message #1924 is a reply to message #1922]

Tue, 05 April 1994 23:49

stl
Messages: 70
Registered: February 1994

Member

In article <1994Apr5.123735.8305@news.uit.no> royd@zapffe.mat-stat.uit.no (Roy Einar Dragseth) writes:
> Why isn't this supported:
> IDL> x = complex(0.,1.)
> IDL> print, x^(1./3.)
> % Operation illegal with complex type.
> % Execution halted at $MAIN$ .
>
> We are running IDL. Version 3.5.1 (hp-ux hp_pa) on a HP9000/755.
>
Hi,

neat little problem! I just tested this on my Sparc 10 running Solaris
4.1 with IDL version 3.5.1 and the problem seems even worse then you
stated. The following works:
IDL> x = complex(0.,1.)
IDL> print,x^(3)
( -0.00000, -1.00000

but, as soon as you change the print to include a float things blow up:
IDL> print,x^(3.)
% Operation illegal with complex type.
% Execution halted at $MAIN$ .

does anyone understand this? SHould such an operation even be allowed?

-stephen

--
Stephen C Strebel / SKI TO DIE
stl@maz.sma.ch / and
Swiss Meteorological Institute, Zuerich / LIVE TO TELL ABOUT IT
01 256 93 85 / (and pray for snow)

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[Message index]

		Re: complex arithmetic By: isaacman on Wed, 06 April 1994 08:37
		Re: complex arithmetic By: salchegg on Wed, 06 April 1994 07:36
		Re: complex arithmetic By: thompson on Wed, 06 April 1994 07:23
		Re: complex arithmetic By: jjp on Wed, 06 April 1994 06:23
		Re: complex arithmetic By: landers on Wed, 06 April 1994 06:17
		Re: complex arithmetic By: stl on Tue, 05 April 1994 23:49

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