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function C = prune (G, id)
%GRB.PRUNE remove explicit values from a matrix.
% C = GrB.prune (G) removes any explicit zeros from G.
% C = GrB.prune (G, id) removes entries equal to the given scalar id.
%
% See also GrB/full, GrB.select, GrB.prune.
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
if (nargin == 1)
id = 0 ;
else
id = gb_get_scalar (id) ;
end
if (isobject (G))
% extract the contents of a GraphBLAS matrix
G = G.opaque ;
end
if (id == 0)
% prune zeros
C = GrB (gbselect (G, 'nonzero')) ;
else
% prune entries equal to id
C = GrB (gbselect (G, '~=', id)) ;
end
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