1function s = normdiff (A,B,kind) 2%NORMDIFF norm (A-B,kind) 3% If A-B is a matrix: 4% 5% norm (A-B,1) is the maximum sum of the columns of abs (A-B). 6% norm (A-B,inf) is the maximum sum of the rows of abs (A-B). 7% norm (A-B,'fro') is the Frobenius norm of A-B: the sqrt of the sum of 8% the squares of the entries in A-B. 9% The 2-norm is not available for either MATLAB or GraphBLAS sparse 10% matrices. 11% 12% If A-B is a row or column vector: 13% 14% norm (A-B,1) is the sum of abs (A-B) 15% norm (A-B,2) is the sqrt of the sum of (A-B).^2 16% norm (A-B,inf) is the maximum of abs (A-B) 17% norm (A-B,-inf) is the minimum of abs (A-B) 18% 19% See also GrB.reduce, GrB/norm. 20 21% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2021, All Rights Reserved. 22% SPDX-License-Identifier: GPL-3.0-or-later 23 24if (nargin < 3) 25 kind = 2 ; 26end 27 28if (isobject (A)) 29 A = A.opaque ; 30end 31 32if (isobject (B)) 33 B = B.opaque ; 34end 35 36s = gbnormdiff (A, B, kind) ; 37 38