SandMath/Matrix and others: Module Updates Available - Printable Version +- HP Forums ( https://www.hpmuseum.org/forum)+-- Forum: HP Calculators (and very old HP Computers) ( /forum-3.html)+--- Forum: General Forum ( /forum-4.html)+--- Thread: SandMath/Matrix and others: Module Updates Available ( /thread-2703.html) |

SandMath/Matrix and others: Module Updates Available - Ángel Martin - 12-24-2014 07:47 AM
The "Xmass Edition" of the SandMath, SandMatrix, 41Z, Library#4 and PowerCL Extreme modules is available at TOS. With Updated manuals in case you need a refresher ;-) Enjoy! RE: SandMath/Matrix and others: Module Updates Available - HP-Collection - 12-24-2014 08:41 AM
You're unbelievable.... How many hours is your day? It must be at least 27 = Thanks for your Xmas present and happy Chrismas to you from Switzerland. RE: SandMath/Matrix and others: Module Updates Available - Michael Fehlhammer - 12-24-2014 05:03 PM
Yes, indeed, unbelievable, thank you, Angel! Angel, are you in search for new challenges for the next year? What about a BASIC interpreter for the 41CL - speed and memory size should be sufficient! Just the display width is poor, I know ... :-) My wish ( dream :-) ) is a result from the following observation: FOCAL language is totally overchallenged with matrix expressions that are very common in numerical mathematics: terms like K(i,j) = M(i,k) * N(k,l) + P(l,j) f.e. are easily implemeted in BASIC, easy to read and edit and quite fast. Try this with the CCD Module matrix functions - possible, of course, but somewhat ridiculous. So even if the implementation of a complete BASIC environment might not be an option, a BASIC subset for definition of matrix and vektor calculations would be very helpful, and feasible perhaps. Such a definition could be done in form of an alpha string which is interpreted by the function that follows immediately ( in a FOCAL program). I know that there are special functions for row- and column-sums, determinants, cross-products ... but that doesn't really help much. Real-world numerical algorithms ( like differential equation solvers, simplex method etc. ) always need individual combinations of matrix elements that cannot be reduced to standard functions like the above mentioned ones! RE: SandMath/Matrix and others: Module Updates Available - Michael Fehlhammer - 12-24-2014 05:05 PM
Just forgot to say: Merry Christmas to all MoHPC members! RE: SandMath/Matrix and others: Module Updates Available - Ángel Martin - 12-25-2014 05:54 PM
(12-24-2014 05:03 PM)Michael Fehlhammer Wrote: So even if the implementation of a complete BASIC environment might not be an option, a BASIC subset for definition of matrix and vektor calculations would be very helpful, and feasible perhaps. Such a definition could be done in form of an alpha string which is interpreted by the function that follows immediately ( in a FOCAL program). Very true Michael, but I'm afraid you overestimate my abilities. Such an implementation would no doubt require a variable management facility completely lacking in the platform, and writing it from the scratch is a very tall order. Perhaps somebody else can get it started and we'll join in ;-) |