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function test54
%TEST54 test GB_subref: numeric case with I=lo:hi, J=lo:hi
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
fprintf ('\ntest54: ==== quick test for subref and assign (lo:stride:hi):\n') ;
clear
m = 5 ;
n = 7 ;
A = sprandn (m,n,0.4) ;
for ilo = 1:m
for ihi = ilo:m
for jlo = 1:n
for jhi = jlo:m
C = A (ilo:ihi,jlo:jhi) ;
I1 = uint64 (ilo:ihi) - 1 ;
J1 = uint64 (jlo:jhi) - 1 ;
C1 = GB_mex_Matrix_subref (A, I1, J1) ;
assert (isequal (C, C1)) ;
I2.begin = ilo-1 ;
I2.end = ihi-1 ;
J2.begin = jlo-1 ;
J2.end = jhi-1 ;
C2 = GB_mex_Matrix_subref (A, I2, J2) ;
assert (isequal (C, C2)) ;
end
end
end
end
C = sprandn (m, n, 0.4) ;
for ilo = 1:m
for ihi = ilo:m
sm = ihi-ilo+1 ;
S = sprandn (sm, n, 0.4) ;
C0 = C ;
C0 (ilo:ihi,:) = S ;
I1 = (uint64 (ilo:ihi) - 1)' ;
C1 = GB_mex_subassign (C, [ ], [ ], S, I1, [ ], [ ]) ;
assert (isequal (C0, C1.matrix)) ;
% with GrB_Vector:
C1 = GB_mex_subassign (C, [ ], [ ], S, I1, [ ], [ ], 5) ;
assert (isequal (C0, C1.matrix)) ;
C1b = GB_mex_assign (C, [ ], [ ], S, I1, [ ], [ ]) ;
assert (isequal (C0, C1b.matrix)) ;
I2.begin = ilo-1 ;
I2.end = ihi-1 ;
C2 = GB_mex_subassign (C, [ ], [ ], S, I2, [ ], [ ]) ;
assert (isequal (C0, C2.matrix)) ;
C2b = GB_mex_assign (C, [ ], [ ], S, I2, [ ], [ ]) ;
assert (isequal (C0, C2b.matrix)) ;
S = sprandn (m, sm, 0.4) ;
C0 = C ;
C0 (:,ilo:ihi) = S ;
C1 = GB_mex_subassign (C, [ ], [ ], S, [ ], I1, [ ]) ;
assert (isequal (C0, C1.matrix)) ;
% with GrB_Vector:
C1 = GB_mex_subassign (C, [ ], [ ], S, [ ], I1, [ ], 5) ;
assert (isequal (C0, C1.matrix)) ;
C1b = GB_mex_assign (C, [ ], [ ], S, [ ], I1, [ ]) ;
assert (isequal (C0, C1b.matrix)) ;
C2 = GB_mex_subassign (C, [ ], [ ], S, [ ], I2, [ ]) ;
assert (isequal (C0, C2.matrix)) ;
C2b = GB_mex_assign (C, [ ], [ ], S, [ ], I2, [ ]) ;
assert (isequal (C0, C2b.matrix)) ;
for jlo = 1:n
for jhi = jlo:n
sm = ihi-ilo+1 ;
sn = jhi-jlo+1 ;
S = sprandn (sm, sn, 0.4) ;
C0 = C ;
C0 (ilo:ihi,jlo:jhi) = S ;
I1 = (uint64 (ilo:ihi) - 1)' ;
J1 = (uint64 (jlo:jhi) - 1)' ;
C1 = GB_mex_subassign (C, [ ], [ ], S, I1, J1, [ ]) ;
assert (isequal (C0, C1.matrix)) ;
% with GrB_Vector
C1 = GB_mex_subassign (C, [ ], [ ], S, I1, J1, [ ], 5) ;
assert (isequal (C0, C1.matrix)) ;
C1b = GB_mex_assign (C, [ ], [ ], S, I1, J1, [ ]) ;
assert (isequal (C0, C1b.matrix)) ;
I2.begin = ilo-1 ;
I2.end = ihi-1 ;
J2.begin = jlo-1 ;
J2.end = jhi-1 ;
C2 = GB_mex_subassign (C, [ ], [ ], S, I2, J2, [ ]) ;
assert (isequal (C0, C2.matrix)) ;
C2b = GB_mex_assign (C, [ ], [ ], S, I2, J2, [ ]) ;
assert (isequal (C0, C2b.matrix)) ;
end
end
end
end
clear C0 C1 C1b C2 C2b I1 J1 I2 J2
fprintf ('longer tests: ') ;
jinc_list = unique ([-1 1 3]) ;
for ibegin = 1:m
for iend = 1:m
for iinc = -m:m
I = ibegin:iinc:iend ;
I1.begin = ibegin - 1 ;
I1.inc = iinc ;
I1.end = iend - 1 ;
fprintf ('.') ;
for jbegin = 1:3:n
for jend = 1:3:n
for jinc = jinc_list
J = jbegin:jinc:jend ;
J1.begin = jbegin - 1 ;
J1.inc = jinc ;
J1.end = jend - 1 ;
sm = length (I) ;
sn = length (J) ;
S = sprandn (sm, sn, 0.4) ;
C0 = C ;
C0 (I,J) = S ;
% fprintf ('\nsubassign:\n') ;
C1 = GB_mex_subassign (C, [ ], [ ], S, I1, J1, [ ]) ;
assert (isequal (C0, C1.matrix)) ;
% fprintf ('\nassign:\n') ;
C2 = GB_mex_assign (C, [ ], [ ], S, I1, J1, [ ]) ;
assert (isequal (C0, C2.matrix)) ;
R = C(I,J) ;
R1 = GB_mex_Matrix_subref (C, I1, J1) ;
assert (isequal (R, R1)) ;
end
end
end
end
end
end
fprintf ('\ntest54: all tests passed\n') ;
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