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WRONG RESULTS WITH IDL [message #11714]

Tue, 05 May 1998 00:00

loewenthal
Messages: 1
Registered: May 1998

Junior Member

Hi Folks

For calculation of beam-propagation I use IDL. But now I realize that
for large arguments, even with double-precision, IDL gives wrong
results:
For example:

sin(12345678901.12345678901) = -03727 9004 9960 8007

where IDL get:

IDL> x = double(12345678901.12345678901)
IDL> print, sin(x)
0.098761418

Can somebody confirm this result, and does anybody know the solution
to overcome this problem?

Best regards

Frank

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[Message index]

		WRONG RESULTS WITH IDL By: loewenthal on Tue, 05 May 1998 00:00
		Re: WRONG RESULTS WITH IDL By: Anders Johannesson on Thu, 14 May 1998 00:00

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