Re: [Lapackpp-devel] Newbie & "float" support

[Christian S. <sti...@tu...>]

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Luigi Bardelli schrieb:
> Dear all,
>    I have just started using lapackpp, and I would like to ask you: do lapackpp
> provide matrix and vector classes with type float? 

Matrix yes, vector no. (Although the LaGenVectorDouble is just a
convenience representation of the LaGenMatDouble with one dimension set
to one, so this restriction shouldn't be too difficult.)

> If yes, are they "supported"
> and tested as well as the double ones? (I have to work with large amounts of
> data where the float precision is more than adequate)

Unfortunately, no. All the "interesting" functions like matrix
multiplications and solvers are only implemented for the double
precision. You would have to add a Float version of each of these
functions. In principle, this isn't too difficult, because in almost all
cases you would copy&paste the Double code to Float, and replace the
dfoo function of LAPACK by its ffoo version. Although the function
declarations of LAPACK for the f* functions are also missing and would
need to be added to include/blas1.h etc.

> At http://lapackpp.sourceforge.net/html/hierarchy.html the class LaGenMatFloat
> is reported but no other classes...

Well, effectively only Double is supported. For Float there is the
matrix class but no other function available.

Christian
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