Re: [Help-gsl] Missing functions for complex vectors

[Brian Gough]

At Mon, 03 Mar 2008 13:50:43 +0100,
Federico Zenith wrote:
> 1) complex vectors have defined all properties mentioned on this page:
> http://www.gnu.org/software/gsl/manual/html_node/Vector-properties.html
> except isnonneg(). I am not sure what's the meaning of ispos() or
> isneg() for a vector of complex numbers, I suppose it means "both real
> AND imaginary part are positive", but this should be documented;
> furthermore, I do not understand why, if ispos() and isneg() could be
> defined, why could not isnonneg() be as well.

Thanks for the bug report! It's defined in the source but missing from
the header file. I will add the declaration.

> 2) Vector operations, defined on this page:
> http://www.gnu.org/software/gsl/manual/html_node/Vector-operations.html
> are not defined for complex types. As far as I can guess, all these
> operations would still make sense for complex numbers. What is really
> odd is, the same operations are defined for complex matrices.

Hmm, yes, that seems to be an oversight.  I'll log it as a bug to be
fixed for the next release.

-- 
Brian Gough