Solving System of Linear Equations

Question

Solving System of Linear Equations

ahad29 (Mechanical)

(OP)

23 Oct 05 22:31

Is there a simple command in Fortran for solving system of linear equations. Like matlab has x = A\B to solve Ax=B. Thanks

Ahad

IRstuff (Aerospace) · Answer 1 · 2005-10-23 23:19:11

RE: Solving System of Linear Equations

IRstuff (Aerospace) 23 Oct 05 23:19

no

TTFN

johnhors (Aerospace) · Answer 2 · 2005-10-24 04:22:29

Ahad

As IRstuff said the answer is "NO" - you have to write the source yourself.

But just about every introductory book on Fortran uses the Gaussian elemination to solve linear equations in their text as an example. Otherwise a Google search throws up sites like http://library.lanl.gov/numerical/bookfpdf.html which gives complete fortran listings of various methods to solve this rather trivial problem.

nbucska (Electrical) · Answer 3 · 2005-10-24 14:52:21

Digital Equipment Corp. had a Scientific Subroutine Package
(SSP) written in F. and I am sure it has what you need.

<nbucska@pcperipherals DOT com> subj: eng-tips
read FAQ240-1032

xwb (Computer) · Answer 4 · 2005-10-24 14:57:44

If you want something faster than Gaussian, look up Cholesky/Choleski LU Decomposition.

IRstuff (Aerospace) · Answer 5 · 2005-10-24 15:02:59

If you want to do it yourself:
http://www.library.cornell.edu/nr/

TTFN

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Solving System of Linear Equations