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function C = gb_spones (G, type)
%GB_SPONES return pattern of GraphBLAS matrix.
% Implements C = spones (G).
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
if (nargin == 1)
switch (gbtype (G))
case { 'single complex' }
op = '1.single' ;
case { 'double complex' }
op = '1.double' ;
otherwise
op = '1' ;
end
else
if (~ischar (type))
error ('GrB:error', 'type must be a string') ;
end
op = ['1.' type] ;
end
C = gbapply (op, G) ;
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