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function test222
%TEST222 test user selectop for iso matrices
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
rng ('default') ;
GB_mex_burble (1) ;
n = 10 ;
A.matrix = pi * spones (sprand (n, n, 0.5)) ;
lo = -3 ;
hi = 4 ;
for iso = [false true]
A.iso = iso ;
for sparsity = [1 2 4 8]
if (sparsity == 8)
A.matrix = pi * sparse (ones (n, n)) ;
end
A.sparsity = sparsity ;
C1 = GB_mex_band (A, lo, hi, 0) ;
C2 = triu (tril (A.matrix, hi), lo) ;
C3 = GB_mex_band2 (A, lo, hi, 0) ;
assert (isequal (C1, C2)) ;
assert (isequal (C1, C3)) ;
C1 = GB_mex_band (A, lo, hi, 1) ;
C2 = triu (tril (A.matrix', hi), lo) ;
C3 = GB_mex_band2 (A, lo, hi, 1) ;
assert (isequal (C1, C2)) ;
assert (isequal (C1, C3)) ;
end
end
GB_mex_burble (0) ;
fprintf ('\ntest222: all tests passed\n') ;
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