comp.lang.idl-pvwave archive: archive » Re: Can you do 'unions' with pv-wave?

Home » Public Forums » archive » Re: Can you do 'unions' with pv-wave?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Can you do 'unions' with pv-wave? [message #3177 is a reply to message #3176]

Mon, 21 November 1994 17:47

sterner
Messages: 106
Registered: February 1991

Senior Member

jgavin@mksol.dseg.ti.com (Jeffrey S. Gavin) writes:

> Is there a way to have a single variable viewed as multiple types, similar
> to the way unions work in C. For example:
. . .
> In other words, the characters '\0','A' were interpreted as a single integer.
> I'm trying to reference a single variable (i.e. 'm') as different types, without
> having to make a copy.

You can come close. Check out Type Conversion in the User's Guide.
A subsection called Extracting Fields describes how to do what you
want (or as close as possible in IDL).

Ray Sterner sterner@tesla.jhuapl.edu
The Johns Hopkins University North latitude 39.16 degrees.
Applied Physics Laboratory West longitude 76.90 degrees.
Laurel, MD 20723-6099
WWW Home page: ftp://fermi.jhuapl.edu/www/s1r/people/res/res.html

Report message to a moderator

[Message index]

		Re: Can you do 'unions' with pv-wave? By: thompson on Tue, 22 November 1994 07:22
		Re: Can you do 'unions' with pv-wave? By: sterner on Mon, 21 November 1994 17:47
		Re: Can you do 'unions' with pv-wave? By: hahn on Mon, 21 November 1994 17:08

Previous Topic:	REQUEST for a list of well known bugs on SGI with prop' products
Next Topic:	Re: Eigensystems in IDL

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Oct 12 19:25:57 PDT 2025

Total time taken to generate the page: 0.39862 seconds