[Pyublas] .real part of matrix as argument

[Neal Becker]

Unfortunately, it seems that if my function is:

F (pyublas::numpy_matrix<double>)

Then if I pass it my_array.real, I get:

cpm.cpm_siso(numpy.ndarray, float, numpy.ndarray, numpy.ndarray,
numpy.ndarray, numpy.ndarray)
did not match C++ signature:
cpm_siso(pyublas::numpy_matrix<double,
boost::numeric::ublas::basic_row_major<unsigned long, long> >, double,
pyublas::numpy_vector<double>, pyublas::numpy_vector<double>,
pyublas::numpy_matrix<int, boost::numeric::ublas::basic_row_major<unsigned
long, long> >, pyublas::numpy_matrix<int,
boost::numeric::ublas::basic_row_major<unsigned long, long> >)

I have to pass instead my_array.real.copy().

I wonder if this could be fixed?

[Andreas Kloeckner]

Post by Neal Becker
F (pyublas::numpy_matrix<double>)
cpm.cpm_siso(numpy.ndarray, float, numpy.ndarray, numpy.ndarray,
numpy.ndarray, numpy.ndarray)
cpm_siso(pyublas::numpy_matrix<double,
boost::numeric::ublas::basic_row_major<unsigned long, long> >, double,
pyublas::numpy_vector<double>, pyublas::numpy_vector<double>,
pyublas::numpy_matrix<int, boost::numeric::ublas::basic_row_major<unsigned
long, long> >, pyublas::numpy_matrix<int,
boost::numeric::ublas::basic_row_major<unsigned long, long> >)
I have to pass instead my_array.real.copy().
I wonder if this could be fixed?

This boils down to a stride. Non-1 strides in matrices are, as of right
now, not supported. This could be fixed, but would again entail forcing
PyUblas onto a strided-by-default storage base for matrices, where the
same speed tradeoffs as for vectors enter in even more severe form.

Andreas
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