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function gbtest48
%GBTEST48 test GrB.apply
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
rng ('default') ;
desc.kind = 'sparse' ;
for trial = 1:40
A = rand (4) ;
A (A > .5) = 0 ;
G = GrB (A) ;
C0 = -A ;
C1 = GrB.apply ('negate', A) ;
C2 = GrB.apply ('negate', A, desc) ;
C3 = GrB.apply ('negate', G, desc) ;
C4 = GrB.apply ('negate', G) ;
assert (isequal (C0, C1)) ;
assert (isequal (C0, C2)) ;
assert (isequal (C0, C3)) ;
assert (isequal (C0, C4)) ;
assert (isequal (class (C2), 'double')) ;
assert (isequal (class (C3), 'double')) ;
M = logical (sprand (4, 4, 0.5)) ;
Cin = rand (4) ;
T = Cin + (-A) ;
C0 = Cin ;
C0 (M) = T (M) ;
C1 = GrB.apply (Cin, M, '+', '-', A) ;
assert (isequal (C0, C1)) ;
C0 = Cin + (-A) ;
C1 = GrB.apply (Cin, '+', '-', A) ;
assert (isequal (C0, C1)) ;
T = -A ;
C0 = Cin ;
C0 (M) = T (M) ;
C1 = GrB.apply (Cin, M, '', '-', A) ;
assert (isequal (C0, C1)) ;
end
fprintf ('gbtest48: all tests passed\n') ;
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