Re: hardcoded program for 3x3 matrix square root?
 From: Zara <yozara@xxxxxxxx>
 Date: Wed, 26 Mar 2008 07:27:58 +0100
On Tue, 25 Mar 2008 21:32:52 0700, "huhua" <lunamoonmoon@xxxxxxxxx>
wrote:
Hi all,
I need a matrix square root function in C/C++.
I only need it for 3x3 matrix, so I decide to find some hardcoded piece of
program, instead of using some numerical library, because then I have to
learn some new API and how to link and how to use stuff.
To avoid the trouble, I think a 3x3 hardcoded program is sufficient for me.
That's to say, given M a 3x3 matrix, I want to find M^(0.5) in C/C++.
Any place I can find some simple matrix square root function? I don't want
to use those huge library, because compiling them and try to make them work
will talke a while... for example, I have tried compiling CALAPACK... it
seemed very complicated...
Any thoughts on that?
How about using a nested loop and sqrt function?
.
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