| cubics & quartics [message #6502] |
Wed, 10 July 1996 00:00  |
kachun
Messages: 7
Registered: June 1996
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Junior Member |
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Does anyone know of a (personal) library routine that can solve cubics
and (even better yet) quartics? Nothing comes up on IDL help with
searches for those keywords.
--
--kachun +** Center for Astrophysics and Space Astronomy **+
+** University of Colorado, Boulder **+
+** Email: kachun@casa.colorado.edu **+
+** http://casa.colorado.edu/~kachun **+
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| Re: cubics & quartics [message #6594 is a reply to message #6502] |
Thu, 11 July 1996 00:00  |
llobet
Messages: 10
Registered: May 1993
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Junior Member |
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In article <4s1l2p$n85@lace.colorado.edu>, kachun@bogart.Colorado.EDU (Ka Chun
Yu) writes:
=In article <31E41FF0.F66@cdc.noaa.gov>, Andy Loughe <afl@cdc.noaa.gov> wrote:
=>Ka Chun Yu wrote:
=>>
=>> Does anyone know of a (personal) library routine that can solve cubics
=>> and (even better yet) quartics? Nothing comes up on IDL help with
=>> searches for those keywords.
=>
=>
=>Does fz_roots accomplish what you need?
=
=I guess fz_roots will work for now, but what I'm really interested in
=is a program that solves using the analytic solution for quartics (and
=I'm too lazy right now to program mine own in ;).
OK, just do it later, when you feel like it.
-xavier
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| Re: cubics & quartics [message #6595 is a reply to message #6502] |
Thu, 11 July 1996 00:00 |
kachun
Messages: 7
Registered: June 1996
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Junior Member |
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In article <31E41FF0.F66@cdc.noaa.gov>, Andy Loughe <afl@cdc.noaa.gov> wrote:
> Ka Chun Yu wrote:
>>
>> Does anyone know of a (personal) library routine that can solve cubics
>> and (even better yet) quartics? Nothing comes up on IDL help with
>> searches for those keywords.
>
>
> Does fz_roots accomplish what you need?
I guess fz_roots will work for now, but what I'm really interested in
is a program that solves using the analytic solution for quartics (and
I'm too lazy right now to program mine own in ;). I basically have to
create a 2-D array where each bin is the root of a quartic equation, so
using fz_roots means looping through each bin of the array. This is
okay for small arrays right now but not for any big ones in the future.
> Andrew F. Loughe afl@cdc.noaa.gov
> University of Colorado, CIRES http://cdc.noaa.gov/~afl
> Campus Box 449 phn:(303)492-0707 fax:(303)497-7013
> Boulder, CO 80309-0449 "He who laughs last thinks slowest!"
--
--kachun +** Center for Astrophysics and Space Astronomy **+
+** University of Colorado, Boulder **+
+** Email: kachun@casa.colorado.edu **+
+** http://casa.colorado.edu/~kachun **+
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