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Re: Using DTRTRS (solve triangular system) from Octave
From: |
c. |
Subject: |
Re: Using DTRTRS (solve triangular system) from Octave |
Date: |
Thu, 28 Nov 2013 15:51:34 +0100 |
On 28 Nov 2013, at 15:43, José Luis García Pallero <address@hidden> wrote:
> Hello:
>
> I need to solve a triangular system in Octave. Exists a way in Octave
> to use the DTRTRS Lapack routine, which is the one to solve a
> triangular system?
>
> Cheers
IIRC, Yes.
If you use mldivide to solve a triangular system Octave should automatically
choose DTRTRS to solve it, i.e.:
A = tril (randn (10, 10));
b = ones (10, 1);
x = A\b;
Should solve the system using DTRTRS.
If you want to check more precisely what is actually done, you can have a look
at the source code of the file dMatrix.cc.
HTH,
c.