Hi Steven... thanks for your kind and extensive reply. Lots of good
food for thought. I know it's easy to complain about lack of
functionality, but it really was not my intention. Python is very cool
as it is and I still know too little about it to even suggest
anything. I just thought maybe I was
- are you using Decimal for the base-10-ness or the
extra precision Decimal provides? Or significant zeros?
Or compatibility with existing Decimal code, or what?
Oh boy, now I will finally prove myself illiterate... well, so be it.
But i am after the extra precision:
from math import *
1. mpmath?
2. sympy?
3. Sage?
Haven't tried those, i guess i have some studying to do.
x=Decimal.__mod__(x,Decimal('2')*pi())
Works fine for what i need, but i am sure it's not the right way to do
it.
I don't know of any better way to deal with large arguments.
The main problem
mpmath... wow... just did what i needed :-)
Thanks, Mark! Hopefully i did not waste too much of your time... and
perhaps this discussion will send other lost sheeps in the right
direction.
(Still, it would make sense to have the goniometric functions in
decimal.)
--
Hi,
I have been looking for a Python module with math functions that would
both eat and spit Decimals. The standard math module eats Decimals
allright but spits floats... herefore exp(sin(Decimal())) produces exp
() of a float :-(
So far, i found:
-AJDecimalMathAdditions
Which math functions? ln, log10, exp, sqrt already exist as methods of
Decimal instances. At the end of the Decimal docs there are a few
examples, including computing sin and cos (but apparently they naïvely use
a McLaurin series like you noticed in other module).
Hi Gabriel - thanks!
