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Re: Yet again, The Sky is Falling! [message #52974 is a reply to message #52872]

Fri, 09 March 2007 09:18

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On Mar 9, 9:38 am, "yp" <Yaswant.Prad...@gmail.com> wrote:
> Your guess is right. I caught the culprit - I had presumed the first
> value of thetaV to be zero (which is not) and when I pass the
> parameter by reference it picks the nearest value of the thetaV tab
> (1.078) and it does exactly what you suspected .

Ah, so the real problem was not passing by reference, but passing the
same variable by reference to the routine multiple times and changing
one of them (causing the others to also change).

I guess it makes sense, but somehow this was suprising to me. When I
examined phi before and after the offending line:

print, phi
if (senzp LT senztab[0]) then senzp = senztab[0]
print, phi

the value of phi had changed.

Moral of the story: don't change the value of input parameters.

Mike
--
www.michaelgalloy.com

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[Message index]

		Yet again, The Sky is Falling! By: yp on Thu, 08 March 2007 10:12
		Re: Yet again, The Sky is Falling! By: Sven Geier on Mon, 12 March 2007 15:04
		Re: Yet again, The Sky is Falling! By: Paul Van Delst[1] on Mon, 12 March 2007 15:30
		Re: Yet again, The Sky is Falling! By: Foldy Lajos on Mon, 12 March 2007 15:19
		Re: Yet again, The Sky is Falling! By: James Kuyper on Fri, 09 March 2007 17:33
		Re: Yet again, The Sky is Falling! By: Michael Galloy on Fri, 09 March 2007 14:53
		Re: Yet again, The Sky is Falling! By: Michael Galloy on Fri, 09 March 2007 14:45
		Re: Yet again, The Sky is Falling! By: Paul Van Delst[1] on Fri, 09 March 2007 13:11
		Re: Yet again, The Sky is Falling! By: David Fanning on Fri, 09 March 2007 11:52
		Re: Yet again, The Sky is Falling! By: Paul Van Delst[1] on Fri, 09 March 2007 11:43
		Re: Yet again, The Sky is Falling! By: Michael Galloy on Fri, 09 March 2007 11:13
		Re: Yet again, The Sky is Falling! By: JD Smith on Mon, 12 March 2007 17:18
		Re: Yet again, The Sky is Falling! By: David Fanning on Fri, 09 March 2007 10:36
		Re: Yet again, The Sky is Falling! By: Paul Van Delst[1] on Fri, 09 March 2007 10:27
		Re: Yet again, The Sky is Falling! By: David Fanning on Fri, 09 March 2007 09:31
		Re: Yet again, The Sky is Falling! By: Michael Galloy on Fri, 09 March 2007 09:18
		Re: Yet again, The Sky is Falling! By: David Fanning on Fri, 09 March 2007 08:51
		Re: Yet again, The Sky is Falling! By: yp on Fri, 09 March 2007 03:17
		Re: Yet again, The Sky is Falling! By: Paolo Grigis on Tue, 13 March 2007 03:24
		Re: Yet again, The Sky is Falling! By: Michael Galloy on Mon, 12 March 2007 16:13

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