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Strange Bug with numeric double constants [message #14711]

Mon, 22 March 1999 00:00

Alex Schuster
Messages: 124
Registered: February 1997

Senior Member

Hi!

I just experienced some weird IDL behaviour:

IDL> help, 1.0d+2.0d

help, 1.0d+2.0d
^
% Syntax error.
IDL> help, 1d+2d

help, 1d+2d
^
% Syntax error.

Strange, isn't it? There's no problem with byte constants:

IDL> help, 1b+2b
<Expression> BYTE = 3

An additional blank helps:

IDL> help, 1d +2d
<Expression> DOUBLE = 3.0000000

I didn't try IDL 5.2, but it happened with 4.0 and 5.1 on Unix and
Windows. I guess IDL expects an exponential notation like 1d0, and is
confused by the nonnumeric plus character.

Alex
--
Alex Schuster Wonko@weird.cologne.de PGP Key available
alex@pet.mpin-koeln.mpg.de

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[Message index]

		Strange Bug with numeric double constants By: Alex Schuster on Mon, 22 March 1999 00:00
		Re: Strange Bug with numeric double constants By: badastro on Thu, 25 March 1999 00:00
		Re: Strange Bug with numeric double constants By: Alex Schuster on Thu, 25 March 1999 00:00

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