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Re: no backwards compatibility in IDL 5.6 [message #34224 is a reply to message #34222]

Fri, 28 February 2003 09:25

Pavel Romashkin
Messages: 166
Registered: April 1999

Senior Member

Why is EXECUTE used in this program? Why can't the value just be
returned from each CASE? Execute will slow it down and as far as I can
tell, does nothing special. There is no code that follows the CASE to
prevent you from returning at any point. Will it not compile in 5.4 with
the extra keyword? I thought keyword mismatches are runtime errors. Am I
missing something?
Pavel

David Fanning wrote:
>
> FUNCTION ATAN_COMPLEX_WRAPPER, complexNum
>
> returnValue = 0.0
> version = Float(!VERSION.Release)
> CASE 1 OF
> (version LE 5.4): ok = Execute('returnValue = ATAN(complexNum)')
> (version EQ 5.5): BEGIN
> realpart = Real_Part(complexNum)
> imgpart = Imaginary(complexNum)
> ok = Execute('returnValue = ATAN(realpart, imgpart)')
> END
> (version GE 5.6): ok = Execute('returnValue = ' + $
> 'ATAN(complexNum, /Phase)')
> ENDCASE
> RETURN, returnValue
> END

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[Message index]

		Re: no backwards compatibility in IDL 5.6 By: JD Smith on Fri, 28 February 2003 09:52
		Re: no backwards compatibility in IDL 5.6 By: David Fanning on Fri, 28 February 2003 09:47
		Re: no backwards compatibility in IDL 5.6 By: Pavel Romashkin on Fri, 28 February 2003 09:25
		Re: no backwards compatibility in IDL 5.6 By: notspecified on Fri, 28 February 2003 07:04
		Re: no backwards compatibility in IDL 5.6 By: R.G. Stockwell on Fri, 28 February 2003 05:59
		Re: no backwards compatibility in IDL 5.6 By: Craig Markwardt on Thu, 27 February 2003 23:42
		Re: no backwards compatibility in IDL 5.6 By: Alexander Rauscher on Thu, 27 February 2003 22:52
		Re: no backwards compatibility in IDL 5.6 By: notspecified on Thu, 27 February 2003 12:03
		Re: no backwards compatibility in IDL 5.6 By: David Fanning on Thu, 27 February 2003 11:17
		Re: no backwards compatibility in IDL 5.6 By: Mark Hadfield on Thu, 27 February 2003 11:00
		Re: no backwards compatibility in IDL 5.6 By: Richard Younger on Thu, 27 February 2003 10:41
		Re: no backwards compatibility in IDL 5.6 By: R.G. Stockwell on Thu, 27 February 2003 09:53
		Re: no backwards compatibility in IDL 5.6 By: David Fanning on Thu, 27 February 2003 08:07
		Re: no backwards compatibility in IDL 5.6 By: Alexander Rauscher on Thu, 27 February 2003 07:56
		Re: no backwards compatibility in IDL 5.6 By: thompson on Thu, 27 February 2003 07:58
		Re: no backwards compatibility in IDL 5.6 By: Craig Markwardt on Thu, 27 February 2003 07:38
		Re: no backwards compatibility in IDL 5.6 By: James Kuyper on Thu, 27 February 2003 07:12
		Re: no backwards compatibility in IDL 5.6 By: R.G. Stockwell on Thu, 27 February 2003 07:13
		Re: no backwards compatibility in IDL 5.6 By: David Fanning on Thu, 27 February 2003 05:20
		Re: no backwards compatibility in IDL 5.6 By: thompson on Fri, 28 February 2003 12:12
		Re: no backwards compatibility in IDL 5.6 By: David Fanning on Fri, 28 February 2003 11:42
		Re: no backwards compatibility in IDL 5.6 By: thompson on Fri, 28 February 2003 12:15
		Re: no backwards compatibility in IDL 5.6 By: Pavel Romashkin on Fri, 28 February 2003 09:55

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