Accurate Normal Distribution for the HP67/97

[Dieter]

(06-26-2016 11:37 PM)bshoring Wrote:  This looks like a nice program, with very good documentation. I look forward to trying it on my RPN-67 simulator for iPad.

Thank you, Bob. I think a comprehensive documentation of the used methods is essential because this way the program may be translated for other calculators. Maybe I'll later post the 12-digit values of the coefficients for the newer models. Or even for the TI58/59. ;-)

As a sidenote, I usually develop such rational approximations in Excel. But inverting a 9x9 matrix with sufficient accuracy simply was too much here. So the calculation was done on a WP34s which returned accurate results without any problem.

Dieter