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Re: Using expm in C++

From: loisp
Subject: Re: Using expm in C++
Date: Mon, 6 Feb 2012 16:57:40 -0800 (PST)

Yes, there is just an m-file. Do you have any suggestions how I can use the expm function in my C++ code?

On Tue, Feb 7, 2012 at 6:04 AM, Alexander Hansen-2 [via Octave] <[hidden email]> wrote:
Hash: SHA1

On 2/6/12 6:06 PM, loisp wrote:
> This is
> the link to the octave package database in Fink.
> I have octave360, octave360-dev, octave360-shlibs,
> linear-algebra-oct360, gsl-oct360 installed.
> --

The general Octave populace my not know what these mean. :-)

The important part is that "octave360-dev" contains all of the
headers, and I made no modifications to them.

There's an "expm" function, but it's implemented as an m-file rather
than in the C++ API, as far as I can tell--definitely not in Matrix.h:

$ dpkg -L octave360-atlas-dev | xargs grep expm
/sw/include/octave-3.6.0/octave/config.h:/* Define to 1 if you have
the `expm1' function. */
/sw/include/octave-3.6.0/octave/config.h:/* Define to 1 if you have
the `expm1f' function. */
/sw/include/octave-3.6.0/octave/lo-specfun.h:extern OCTAVE_API double
expm1 (double x);
/sw/include/octave-3.6.0/octave/lo-specfun.h:extern OCTAVE_API Complex
expm1 (const Complex& x);
/sw/include/octave-3.6.0/octave/lo-specfun.h:extern OCTAVE_API float
expm1f (float x);
/sw/include/octave-3.6.0/octave/lo-specfun.h:extern OCTAVE_API
FloatComplex expm1 (const FloatComplex& x);
/sw/include/octave-3.6.0/octave/ov-base.h:      umap_expm1,
/sw/include/octave-3.6.0/octave/ov.h:  MAPPER_FORWARD (expm1)
/linear-algebra/duplication_matrix.m scripts/linear-algebra/expm.m
/sw/share/doc/octave360-atlas-dev/NEWS:      expm1
nargoutchk                  strchr
- --
Alexander Hansen, Ph.D.
Fink User Liaison
Version: GnuPG v1.4.11 (Darwin)
Comment: Using GnuPG with Mozilla -

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