[Discuss-gnuradio] LAPACK/BLAS with GNURadio

2009-12-13 Thread Moritz Fischer 
Dear List,

I was trying to implement some LAPACK/BLAS(liblapack as included in
Ubuntu) wrappers for GNURadio since I haven't found anything to do
matrix/vector operations in GNURadio but I haven't found out how to do a
clever conversion from Fortran's (more precise the f2c) way of dealing
with complex numbers ( a C-struct ):

extern C
{
struct{
float real;
float imag;
} complex;
}

to the GNURadio way:

std::complexfloat

and back.

My C++ knowledge on alignment etc. is too limited, up to now I just
copied them, since reinterpret_cast or static_cast only work for
certain architecture / alignment combinations. So if anyone has some
ideas please let me know.

Cheers,

Moritz


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Re: [Discuss-gnuradio] LAPACK/BLAS with GNURadio

2009-12-13 Thread Eric Blossom 
On Sun, Dec 13, 2009 at 02:48:25PM +0100, Moritz Fischer wrote:
 Dear List,
 
 I was trying to implement some LAPACK/BLAS(liblapack as included in
 Ubuntu) wrappers for GNURadio since I haven't found anything to do
 matrix/vector operations in GNURadio but I haven't found out how to do a
 clever conversion from Fortran's (more precise the f2c) way of dealing
 with complex numbers ( a C-struct ):
 
 extern C
 {
 struct{
 float real;
 float imag;
 } complex;
 }
 
 to the GNURadio way:
 
 std::complexfloat
 
 and back.

They have the same underlying representation, so there shouldn't be
any problem, cast away.  FWIW, we already link gnuradio-core with GSL
(the GNU Scientific Library) which in turns links with CBLAS.

Eric


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