[Maxima-bugs] [ maxima-Bugs-2108205 ] sin(10^22), numer; returns wrong value

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Bugs item #2108205, was opened at 2008-09-12 19:41
Message generated for change (Comment added) made by rtoy
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Category: Lisp Core - Trigonometry
Group: None
>Status: Pending
>Resolution: Rejected
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: sin(10^22), numer; returns wrong value

Initial Comment:
sin(10^22),numer; results in 0.41214336710708. The correct value is apparently -0.8522008497671888017727... according to p.176 of Elementary functions : algorithms and implementation / Jean-Michel Muller.--2nd ed. ISBN 0-8176-4372-9

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>Comment By: Raymond Toy (rtoy)
Date: 2008-09-12 22:35

Message:
This is an issue with the underlying Lisp used to build maxima.  Cmucl and
ecl return the correct value.  clisp returns 0.0.  I'm guessing you're
using gcl.

You should request your lisp vendor to fix this or use a different lisp.

Marking this as pending/rejected.  If you (or someone else) disagrees,
please comment.


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