Re: HP 35s trigonometric functions alternative Message #4 Posted by Lyuka on 31 Aug 2007, 4:41 a.m., in response to message #3 by Gerson W. Barbosa
Thanks.
I really want the bugfixed version of the HP 35s.
By the way, I have no other reference since it is a kind of my original.
Taylor series, the continued fraction, Chebyshev approximation,
and Pade approximation itself are all well known mathematical method.
However, I thought a method that optimise only the coefficients of
the parts which have smaller computational error sensitivity,
based on rational Chebyshev approximation.
'pi' in my program is coded as
builtin PI (3.14159265359)  2.06761537357E13
this yields 25 digits pi approximation 3.141592653589793238462643.
Regards,
Lyuka
