1function w = GB_spec_mxv (w, mask, accum, semiring, A, u, descriptor)
2%GB_SPEC_MXV a MATLAB mimic of GrB_mxv
3%
4% Usage:
5% w = GB_spec_mxv (w, mask, accum, semiring, A, u, descriptor)
6%
7% w, mask, and u are vectors.  u is not transposed (descriptor inp1 ignored)
8
9% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2021, All Rights Reserved.
10% SPDX-License-Identifier: Apache-2.0
11
12if (nargout > 1 || nargin ~= 7)
13    error ('usage: w = GB_spec_mxv (w, mask, accum, semiring, A, u, descriptor)') ;
14end
15
16% make sure u is a column vector
17if (isstruct (u))
18    n = size (u.matrix, 2) ;
19else
20    n = size (u, 2);
21end
22if (n ~= 1)
23    error ('u must be a vector') ;
24end
25
26% GraphBLAS does not allow u to be transposed via the descriptor
27if (isfield (descriptor, 'inp1'))
28    descriptor = rmfield (descriptor, 'inp1') ;
29end
30
31w = GB_spec_mxm (w, mask, accum, semiring, A, u, descriptor) ;
32
33