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psb_sp_get_nnzeros -- Get number of nonzero elements in a sparse matrix

nr = psb_sp_get_nnzeros(a)

On Entry
the sparse matrix
Scope: local
Type: required
Intent: in.
Specified as: a structured data of type spdatapsb_spmat_type.

On Return
Function value
The number of nonzero elements stored in sparse matrix a.


  1. The function value is specific to the storage format of matrix a; some storage formats employ padding, thus the returned value for the same matrix may be different for different storage choices.