1function gbtest56 2%GBTEST56 test GrB.empty 3 4% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2021, All Rights Reserved. 5% SPDX-License-Identifier: GPL-3.0-or-later 6 7for m1 = -1:5 8 for n1 = -1:5 9 10 m = max (m1, 0) ; 11 n = max (n1, 0) ; 12 13 if (~ ((m == 0) || (n == 0))) 14 continue 15 end 16 17 C1 = GrB.empty (m1, n1) ; 18 C2 = GrB.empty ([m1, n1]) ; 19 C3 = GrB (m, n) ; 20 C0 = sparse (m, n) ; 21 22 assert (isequal (C0, C1)) ; 23 assert (isequal (C0, C2)) ; 24 assert (isequal (C0, C3)) ; 25 end 26end 27 28C1 = GrB.empty (0) ; 29C2 = GrB.empty (-1) ; 30C3 = GrB (0,0) ; 31C0 = sparse (0,0) ; 32 33assert (isequal (C0, C1)) ; 34assert (isequal (C0, C2)) ; 35assert (isequal (C0, C3)) ; 36 37assert (length (C0) == 0) ; %#ok<*ISMT> 38assert (length (C1) == 0) ; 39assert (length (C2) == 0) ; 40assert (length (C3) == 0) ; 41 42C1 = GrB.empty (0,5) ; 43C2 = GrB.empty (0,5) ; 44C3 = GrB (0,5) ; 45C0 = sparse (0,5) ; 46 47assert (isequal (C0, C1)) ; 48assert (isequal (C0, C2)) ; 49assert (isequal (C0, C3)) ; 50 51assert (length (C0) == 0) ; 52assert (length (C1) == 0) ; 53assert (length (C2) == 0) ; 54assert (length (C3) == 0) ; 55 56C1 = GrB.empty (5,0) ; 57C2 = GrB.empty (5,0) ; 58C3 = GrB (5,0) ; 59C0 = sparse (5,0) ; 60 61assert (isequal (C0, C1)) ; 62assert (isequal (C0, C2)) ; 63assert (isequal (C0, C3)) ; 64 65assert (length (C0) == 0) ; 66assert (length (C1) == 0) ; 67assert (length (C2) == 0) ; 68assert (length (C3) == 0) ; 69 70fprintf ('gbtest56: all tests passed\n') ; 71 72