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Re: IDL 5.5 help file [message #27781 is a reply to message #27778]

Thu, 08 November 2001 01:28

Nigel Wade
Messages: 286
Registered: March 1998

Senior Member

Mark Hadfield wrote:

> From: "Nigel Wade" <nmw@ion.le.ac.uk>
>> As an corollary to a previous thread on passing strings to
>> call_external in 5.5, is the fact that the string length is
>> changed to 32bit mentioned in the "What's New"?
>
> Yes:
>
> "Maximum String Length Limit Increased for 32-Bit IDL
> Prior to IDL 5.5, 32-bit IDL had a maximum string length limit of 64K
> (65534 characters) while 64-bit IDL allowed strings to be up to 2.1GB
> (2147483647 characters) in length. With IDL 5.5, this limit has been
> raised to 2.1GB for both types
> of IDL."
>
> Though AFAIK it doesn't point out the implications of this for
> call_external.
>
>

I never new there were 32bit and 64bit versions of IDL.

It's probably safest to assume that there are other changes to the way IDL
variables are stored internally, and recompiling all C/FORTRAN etc. code
which deals with IDL variables would be prudent. It does mean that if you
want to support multiple versions of IDL you have to have multiple versions
of all your external code, though.

--
-----------------------------------------------------------
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523568, Fax : +44 (0)116 2523555

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[Message index]

		Re: IDL 5.5 help file By: Craig Markwardt on Thu, 08 November 2001 07:17
		Re: IDL 5.5 help file By: Nigel Wade on Thu, 08 November 2001 01:28
		Re: IDL 5.5 help file By: Mark Hadfield on Wed, 07 November 2001 12:49
		Re: IDL 5.5 help file By: Nigel Wade on Wed, 07 November 2001 02:07
		Re: IDL 5.5 help file By: Pavel A. Romashkin on Tue, 06 November 2001 15:48
		Re: IDL 5.5 help file By: John-David T. Smith on Tue, 06 November 2001 14:22
		Re: IDL 5.5 help file By: Mark Hadfield on Tue, 06 November 2001 11:39

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