Rxm
5 March 2014
The distribution of ooRexx contains a function package called rxMath that
provides the computation of trigonometric and some other functions.
Based on the underlying c-library the precision of the returned values is
limited to 16 digits.
Close observation show that sometimes the last one or two digits of the
returned values are not correct.
Many years ago I experimented with implementing these functions in Rexx with
its virtually unlimited precision.
The rxm class is intended to provide the same functionality as rxMath with
no limit on the specified or implied precision.
While I tried to get full compatibility there remain a few (actually very
few) differences:
- RxCalcTan(90) raises the Syntax condition
- rxCalcexp(x) limits x to 709. or so.
Handling of syntactically incorrect arguments is still to be finished!
The program testexp.rex shows what I have coded so far.
You can see the 3 discrepancies when comparing rxm and rxMath.
The surprise (disappointment) is that condition('D') returns nothing
whatsoever
Any help / advice / critique would be highly appreciated
Thanks
Walter
PS rxmexp etc. will eventually be changed to rxCalcexp to become compatible
with rxMath!
Find the program at
https://www.dropbox.com/sh/9v939j55ikderfx/SYLv80C-wP?n=132389230
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