command-line RPN calculator
rpnChilada is a command-line Reverse-Polish Notation calculator that was first written in C in 1988 as a four-function calculator.
It was rewritten in Python 3 in 2012 and now uses the mpmath library. It was a Python learning exercise for me, and a fun little toy, but when I found mpmath, it became really cool and powerful, so props to Fredrik Johansson, who did most of the heavy lifting (http://mpmath.org).
rpnChilada gives you the whole enchilada when it comes to playing with numbers. You get math functions, algebra functions, combinatoric functions, number theory functions, astronomy functions, physics functions, unit conversions (comparable to GNU Units) and much, much more. There are over 800 unique operators. rpnChilada supports lists, but not matrices.
rpnChilada comes with integrated help, which isn’t complete, but has at least a basic description of every operator, and over 1300 built-in examples. Help now includes descriptions for constants and units as well, although a lot of these still need to be filled in.
rpnChilada also comes with an extensive test suite, which is being constantly improved. Many of the functions are validated against the OEIS.
Version 8 represents a major overhaul of the unit conversion code. Unit conversion is now significantly smarter than it used to be, and intermediate conversions are no longer necessary.
There are still bugs, and since it’s a one-person side project, progress is slow, but bug reports and feature requests are welcome at email@example.com.
Note, Windows users will want the Windows-specific wheels for pyephem and gmpy2:
Linux users will need the development versions of the GMP, MPC and MFPR libraries.
rpnChilada can be launched with ‘rpnChilada’ or ‘rpn’ in the Python Scripts/ directory.
For a quick primer on rpnChilada’s use, try “rpn help examples”. Please note that the OEIS integration and geographic location functions require Internet access.
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