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Re: Strange Bug with numeric double constants [message #14742 is a reply to message #14711]

Thu, 25 March 1999 00:00

badastro
Messages: 7
Registered: August 1998

Junior Member

In comp.lang.idl-pvwave Alex Schuster <alex@rosa.mpin-koeln.mpg.de> wrote:
> 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?

Nope. ;-) IDL expects that what follows the 'd' is the exponent,
like 100 being 1.d2 or 1.d+2. If you put a 'd' after the 2, it doesn't
recognize it as being part of the exponent, so it barfs. The same
things happens if you use an 'e' instead of 'd'. It doesn't happen
with byte numbers because the 'b' doesn't precede an exponent.

* * * * * The Bad Astronomer * * * *

Phil Plait badastro@badastronomy.com
The Bad Astronomy Web Page: http://www.badastronomy.com

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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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