Relative speed of 15C, 34S and 42S

[Paul Dale]

(12-26-2017 08:51 AM)Dieter Wrote:  This may be not the best idea for comparing speeds since the matrix and solver algorithms may be different. This is especially true for the 34s which definitely uses its own methods.

I believe the HPs and the 34S use Doolittle's Method for LU Decompositions (matrix inversions, determinants and solving systems of equations).

I'm not sure what approach Free42 uses. The solvers are definitely different, HP used the secant method, the 34S and Free42 use Ridder's method.

Quote:The 34s does its internal calculations with 39 (!) digits, XROM code with 34, and sometimes even more, so its working precision is at least on par with the DM42. This happens both in single and double precision mode.

There was also a considerable loss when we traded performance for bytes in the version 3 firmware. We squeezed a lot in but it hurt in other ways.


Pauli