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newlispfanclub.alh.net • View topic - complex arithmetics

complex arithmetics

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complex arithmetics

Postby thefausap » Thu Sep 11, 2014 10:09 pm

Hello all,

attached there's a "library" for newlisp to perform mathematical operations with complex numbers.
Such numbers are created with a list with the format : '(re im).
I added and tested all the included functions.

I also created a library for complex matrices determinant. The matrices needs to be written in column-major order.
I borrowed the permutation code from the newlisp web site and I added the function to calculate the parity of permutation.

Please feel free to test it and comment it.
This is my first newlisp program, and I'm sure there're a lot to improve.

Regards
Attachments
tcomplex.zip
test file for both of them
(377 Bytes) Downloaded 155 times
perm.zip
permutations library
(1.14 KiB) Downloaded 155 times
complex_lib.zip
complex number library
(966 Bytes) Downloaded 168 times
thefausap
 
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Re: complex arithmetics

Postby kosh » Thu Sep 18, 2014 1:23 pm

kosh
 
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Joined: Sun Sep 13, 2009 5:38 am
Location: Japan

Re: complex arithmetics

Postby Lutz » Thu Sep 18, 2014 8:26 pm

Currently decimal-point numbers are limited to 32 characters including the decimal point and sign. Which is about double the digits precision which internally can be distinguished in IEEE-754 floating point numbers.

This character limit will be increased in the next version.
Lutz
 
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