PDQ Algorithm: Infinite precision best fraction within tolerance
02-16-2014, 02:32 PM
Post: #3
 Han Senior Member Posts: 1,882 Joined: Dec 2013
RE: PDQ Algorithm: Infinite precision best fraction within tolerance
(02-16-2014 02:01 PM)Thomas_Sch Wrote:
(12-13-2013 05:09 AM)Joe Horn Wrote:  ...PDQ is a CAS program and must be created as such. ...

@Joe: Maybe it could be helpful to add some more words about entering a CAS program, since I didn't find hints about creating a CAS program in the manual(s).
My way (awkward?): First in CAS mode I created an empty program like
Code:
d2f:=(x)->x
then I could edit this by [Shift]+1 (Program), and enter your code. Works fine, besides a small typo ('END;;').

Are there other steps to create/enter a CAS program? Where did you find the operators like '/=' and '+=' ? The manuals are unhelpful ;-)

Many thanks for your programs!
Thomas

The CAS is xcas/giac. You can find relevant documentation here: http://www-fourier.ujf-grenoble.fr/~parisse/giac.html

As for creating CAS programs, your technique is essentially the only method on this current firmware.

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 Messages In This Thread PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 12-13-2013, 05:09 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Thomas_Sch - 02-16-2014, 02:01 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Han - 02-16-2014 02:32 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - patrice - 03-26-2014, 10:10 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 03-28-2014, 10:47 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 05-28-2014, 05:37 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - dbbotkin - 10-08-2014, 12:56 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 12-06-2014, 05:35 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - patrice - 12-06-2014, 10:47 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 12-06-2014, 02:38 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - patrice - 12-06-2014, 05:06 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 12-07-2014, 04:30 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - patrice - 12-07-2014, 08:51 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 12-08-2014, 12:10 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - pier4r - 03-15-2018, 03:20 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Luigi Vampa - 03-15-2018, 08:50 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 03-16-2018, 02:41 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - pier4r - 03-28-2018, 06:57 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - smartin - 02-24-2019, 08:36 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - cdmackay - 02-24-2019, 10:29 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 02-25-2019, 11:10 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - cdmackay - 02-25-2019, 05:56 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 02-26-2019, 03:17 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - cdmackay - 02-26-2019, 03:45 PM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - cdmackay - 01-26-2020, 12:32 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - Joe Horn - 01-26-2020, 02:41 AM RE: PDQ Algorithm: Infinite precision best fraction within tolerance - cdmackay - 01-26-2020, 08:34 PM

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