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Re: [Help-gsl] How to solve a linear equation system with left (lower) t
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From: |
Brian Gough |
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Subject: |
Re: [Help-gsl] How to solve a linear equation system with left (lower) triangle matrix in gsl? |
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Date: |
Tue, 13 Mar 2007 17:35:38 +0000 |
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User-agent: |
Wanderlust/2.14.0 (Africa) Emacs/21.3 Mule/5.0 (SAKAKI) |
At Mon, 12 Mar 2007 04:26:22 +0100,
Alexander Morgenstern wrote:
>
> Now my (hopefully not too stupid) question: I want to solve a linear
> equation system of the form:
>
> Lx = b
>
> With L being a left (lower) triangle matrix....
Hello,
There is a blas function gsl_blas_dtrsv that solves for upper or lower
triangular matrices, e.g.
gsl_vector_memcpy(x, b); /* x <- b */
gsl_blas_dtrsv (CblasLower, CblasNoTrans, CblasUnit, L, x;)
See the documentation for more details.
--
best regards,
Brian Gough
(GSL Maintainer)
Network Theory Ltd,
Publishing the GSL Manual - http://www.network-theory.co.uk/gsl/manual/