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function Mask = GB_random_mask (m, n, d, M_is_csc, M_is_hyper)
% Mask = GB_random_mask (m, n, d, M_is_csc, M_is_hyper)
%
% Construct a random matrix, either as a matrix or a struct
% With 3 arguments, Mask is a sparse logical matrix.
% With 4, Mask is a struct.
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
M = (sprand (m, n, d) ~= 0) ;
if (nargin < 4)
Mask = M ;
else
Mask.matrix = M ;
Mask.is_csc = M_is_csc ;
Mask.is_hyper = M_is_hyper ;
end
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