function p = bisect (A, mode)                                         %#ok
%BISECT computes a node separator based on METIS_ComputeVertexSeparator.
%
%   Example:
%   s = bisect(A)       bisects A. Uses tril(A) and assumes A is symmetric
%   s = bisect(A,'sym') the same as p=bisect(A)
%   s = bisect(A,'col') bisects A'*A
%   s = bisect(A,'row') bisects A*A'
%
% A must be square for p=bisect(A) and bisect(A,'sym').
%
% s is a vector of length equal to the dimension of A, A'*A, or A*A',
% depending on the matrix bisected.  s(i)=0 if node i is in the left
% subgraph, s(i)=1 if it is in the right subgraph, and s(i)=2 if node i
% is in the node separator.
%
% Requires METIS, authored by George Karypis, Univ. of Minnesota.  This
% MATLAB interface, via CHOLMOD, is by Tim Davis.
%
% See also metis, nesdis.

 % Copyright 2006-2023, Timothy A. Davis, All Rights Reserved.
 % SPDX-License-Identifier: GPL-2.0+

error ('bisect mexFunction not found') ;