GNU Octave  3.8.0
A high-level interpreted language, primarily intended for numerical computations, mostly compatible with Matlab
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Macros | Functions File Reference
#include <cstdlib>
#include <string>
#include <vector>
#include "ov.h"
#include "defun-dld.h"
#include "pager.h"
#include "ov-re-mat.h"
#include "ov-re-sparse.h"
#include "ov-cx-sparse.h"
#include "oct-map.h"
#include "oct-sparse.h"
#include "oct-locbuf.h"
Include dependency graph for

Go to the source code of this file.


#define AMD_NAME(name)   amd ## name


 DEFUN_DLD (amd, args, nargout,"-*- texinfo -*-\n\ @deftypefn {Loadable Function} {@var{p} =} amd (@var{S})\n\ @deftypefnx {Loadable Function} {@var{p} =} amd (@var{S}, @var{opts})\n\ \n\ Return the approximate minimum degree permutation of a matrix. This\n\ permutation such that the Cholesky@tie{}factorization of @code{@var{S}\n\ (@var{p}, @var{p})} tends to be sparser than the Cholesky@tie{}factorization\n\ of @var{S} itself. @code{amd} is typically faster than @code{symamd} but\n\ serves a similar purpose.\n\ \n\ The optional parameter @var{opts} is a structure that controls the\n\ behavior of @code{amd}. The fields of the structure are\n\ \n\ @table @asis\n\ @item @var{opts}.dense\n\ Determines what @code{amd} considers to be a dense row or column of the\n\ input matrix. Rows or columns with more than @code{max(16, (dense *\n\ sqrt (@var{n})} entries, where @var{n} is the order of the matrix @var{S},\n\ are ignored by @code{amd} during the calculation of the permutation\n\ The value of dense must be a positive scalar and its default value is 10.0\n\ \n\ @item @var{opts}.aggressive\n\ If this value is a non zero scalar, then @code{amd} performs aggressive\n\ absorption. The default is not to perform aggressive absorption.\n\ @end table\n\ \n\ The author of the code itself is Timothy A. Davis\n\ @email{}, University of Florida (see\n\ @url{}).\n\ @seealso{symamd, colamd}\n\ @end deftypefn")

Macro Definition Documentation

#define AMD_NAME (   name)    amd ## name

Definition at line 50 of file

Referenced by DEFUN_DLD().

Function Documentation

DEFUN_DLD ( amd  ,
args  ,