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function s = norm (G, kind)
%NORM matrix or vector norm.
% If G is a matrix:
%
% norm (G,1) is the maximum sum of the columns of abs (G).
% norm (G,inf) is the maximum sum of the rows of abs (G).
% norm (G,'fro') is the Frobenius norm of G: the sqrt of the sum of the
% squares of the entries in G.
% The 2-norm is not available for either built-in or GraphBLAS sparse
% matrices.
%
% If G is a row or column vector:
%
% norm (G,1) is the sum of abs (G)
% norm (G,2) is the sqrt of the sum of G.^2
% norm (G,inf) is the maximum of abs (G)
% norm (G,-inf) is the minimum of abs (G)
%
% The p-norm for vectors is not yet supported.
%
% See also GrB.reduce, GrB.normdiff.
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
% FUTURE: add the p-norm for vectors.
if (isobject (G))
G = G.opaque ;
end
if (nargin == 2)
if (~ischar (kind))
kind = gb_get_scalar (kind) ;
end
else
kind = 2 ;
end
s = gbnorm (G, kind) ;
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