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Re: NR_MACHAR hangs under Win95
| Re: NR_MACHAR hangs under Win95 [message #8364] |
Mon, 03 March 1997 00:00 |
Kevin Ivory
Messages: 71
Registered: January 1997
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Brian Jackel wrote:
> While using the library routine CURVEFIT, IDL kept hanging
> (IDL 4.0.1 running under Windows95). Eventually I traced the
> problem to the following line
>
> res = nr_machar(DOUBLE=double)
>
> which gets called only if numerical derivatives are required.
>
> Presumably this does the Numerical Recipes calculations for
> machine constants, but since it's not mentioned in the on-line
> help (or the hardcopy documentation) it's tough to be sure.
>
> Can anyone reproduce this problem on any other platform, or
> confirm it under Windows95?
You are right about the Numerical Recipes machine-specific
parameters. It is in the documentation, but since IDL 4.0
all the Numerical Recipes routines do not have the leading
'nr_' anymore. I never got 'machar' to work on an OSF1 plat-
form, I always presumed it was because of the 64bit platform
(which would make the routine even more necessary ;-)
Best regards
Kevin
--
Kevin Ivory Tel: +49 5556 979 434
Max-Planck-Institut fuer Aeronomie Fax: +49 5556 979 240
Postfach 20 mailto:kivory2@gwdg.de
D-37189 Katlenburg-Lindau, GERMANY http://www.gwdg.de/~kivory2/
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