get_blas_funcs(names, arrays=(), dtype=None, ilp64=False)
Arrays are used to determine the optimal prefix of BLAS routines.
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 BLAS, 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} respectively. The code and the dtype are stored in attributes typecode and dtype of the returned functions.
Name(s) of BLAS functions without type prefix.
Arrays can be given to determine optimal prefix of BLAS routines. If not given, double-precision routines will be used, otherwise the most generic type in arrays will be used.
Data-type specifier. Not used if arrays is non-empty.
Whether to return ILP64 routine variant. Choosing 'preferred' returns ILP64 routine if available, and otherwise the 32-bit routine. Default: False
List containing the found function(s).
Return available BLAS function objects from names.
import numpy as np
import scipy.linalg as LA
rng = np.random.default_rng()
a = rng.random((3,2))
x_gemv = LA.get_blas_funcs('gemv', (a,))
x_gemv.typecode
x_gemv = LA.get_blas_funcs('gemv',(a*1j,))
x_gemv.typecode
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