Complex number arithmetic in Tcl?

Question

Is there an equivalent to the expr command which works for complex numbers (represented lists of two doubles)?

This library provides functions for complex number arithmetic, and this seems to be a useful utility to define the required cexpr function, but it doesn't work well.

E.g. it doesn't handle properly the brackets.

ParseExpressions::ParseExpr { (1) + ((2) + (3)) } { }

returns

+ [+ 1 ((2)] (3))

while it should return

+ [+ 1 2] 3

Also ParseExpressions::ParseExpr { {1 2} + {3 4} } {}

returns

+ 1 2 3 4

while it should return

+ {1 2} {3 4}

So basically I am asking for a robust version of this utility.

This is a good question; it will take time to get an acceptable solution. — Donal Fellows, Feb 01 '12 at 15:19
Suggest reading: http://wiki.tcl.tk/1612 (about complex math implemented in TCL) — Hai Vu, Feb 06 '12 at 21:04

score 3 · Accepted Answer · answered Aug 17 '12 at 15:26

3

Why don't you try this: http://wiki.tcl.tk/11415 or something like this too: http://wiki.tcl.tk/13885

I hope these are easy to use alternatives for the mentioned utility.

answered Aug 17 '12 at 15:26

askmish

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score 0 · Answer 2 · answered May 25 '13 at 00:17

0

You can use pretty much an C library if you link it with FFIDL.

answered May 25 '13 at 00:17

drysdam

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Complex number arithmetic in Tcl?

2 Answers2