SciPy

scipy.linalg.get_lapack_funcs

scipy.linalg.get_lapack_funcs(names, arrays=(), dtype=None)[source]

Return available LAPACK function objects from names.

Arrays are used to determine the optimal prefix of LAPACK routines.

Parameters :

names : str or sequence of str

Name(s) of LAPACK functions without type prefix.

arrays : sequence of ndarrays, optional

Arrays can be given to determine optimal prefix of LAPACK routines. If not given, double-precision routines will be used, otherwise the most generic type in arrays will be used.

dtype : str or dtype, optional

Data-type specifier. Not used if arrays is non-empty.

Returns :

funcs : list

List containing the found function(s).

Notes

This routine automatically chooses between Fortran/C interfaces. Fortran code is used whenever possible for arrays with column major order. In all other cases, C code is preferred.

In LAPACK, the naming convention is that all functions start with a type prefix, which depends on the type of the principal matrix. These can be one of {‘s’, ‘d’, ‘c’, ‘z’} for the numpy types {float32, float64, complex64, complex128} respectevely, and are stored in attribute typecode of the returned functions.