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- From: martink@NeoSoft.com (Martin Koistinen)
- Subject: Gauss-Jordan Elimination
- Organization: NeoSoft Communications Services -- (713) 684-5900
- Date: Fri, 13 Nov 1992 04:47:55 GMT
- Message-ID: <Bxn1C3.1A9@NeoSoft.com>
- Keywords: Linear Algebra Programming
- Lines: 21
-
-
- A while ago I posted the question "Which is the fastest way to solve a 3x3
- system of equations in a program." I got some fine responses: most of them
- replied Gauss-Jordan Elimination with Partial Pivoting. I had previously
- considered this method but sort of dismissed it due to the fact that it
- seemed rather explicit in nature and the fact that it can't be the fastest
- since it is the first one mentioned in my Linear Algebra book! However,
- now that I am faced with the facts, I have a couple of other concerns for
- you guys out there.
-
- Is it really necessary for my algorithm to first reduce the matrix into
- row echelon form or is this a convenience for humans to keep things
- straight? It seems like a lot of logic coding and swapping to do it.
-
- I don't really care to reinvent the wheel here so does someone out there
- have a fairly well optimised piece of C code that does this? If so, Please
- email it to me.
-
- Thanks! martink@neosoft.com Martin Koistinen
-
- --
-