[mikebeam]

Hello-

Does anyone know what C library I use to work with work with complex numbers and do algebra with complex numbers? Thanks!

Mike

[Scott_H]

I think there is one. "complex.h". You could make you own thought.

Do a google search for "complex.h". There were a ton of hits but I didn't feel like going though them.

[parallax]

I'm fairly certain that PARI handles complex numbers (it's a complete arbitrary precision and algebra package). You might want to check that out.

[Scott_H]

Do you think programmers will start extending the NSObjects to do stuff like this? For example.

NSNumber->NSComplexNumber
NSPoint->NSVector

.....

[parallax]

I was just thinking of that :-)

It's very possible, although the syntax of Objective-C would make it tough to be elegant:

[[[NSComplexNumber numberWithInt:4] numberByAdding:[NSComplexNumber numberWithInt:3]] numberByDividing:[NSComplexNumber numberWithInt:5]];

= (4+3)/5

Ick!

[ EDIT ] ------------------------------------------------

Anyways, since the interface between classes isn't as fast as the interface between structs, it would make large calculations _slow_ where large or complex numbers are needed (Fourier transforms most importantly).

[This message has been edited by parallax (edited 04-17-2001).]

[mikebeam]

So i've been looking for libcomplex and complex.h and it hasn't been going so well. I'm assuming i have to find this library for BSD, or will the Linux complex library work? That one seems to be easier to find.

Parallax, I also tried to get PARI, but it wasn't really installing correctly so i put that on the back burner. But thanks for the suggesting. It looks like a pretty powerful package that i'd like to explore some more.

Okay, thanks for helping me out!

mike