CAMD Version 2.2, Copyright (c) 2007 by Timothy A.  Davis, Yanqing Chen,
Patrick R. Amestoy, and Iain S. Duff.  All Rights Reserved.
CAMD is available under alternate licences; contact T. Davis for details.

CAMD:  a set of routines for permuting sparse matrices prior to
    factorization.  Includes a version in C, a version in Fortran, and a MATLAB
    mexFunction.

Requires UFconfig, in the ../UFconfig directory relative to this directory.

Quick start (Unix, or Windows with Cygwin):

    To compile, test, and install CAMD, you may wish to first configure the
    installation by editting the ../UFconfig/UFconfig.mk file.  Next, cd to
    this directory (CAMD) and type "make" (or "make lib" if you do not have
    MATLAB).  When done, type "make clean" to remove unused *.o files
    (keeps the compiled libraries and demo programs).  See the User Guide
    (Doc/CAMD_UserGuide.pdf), or ../UFconfig/UFconfig.mk for more details.

Quick start (for MATLAB users);

    To compile, test, and install the CAMD mexFunction, cd to the
    CAMD/MATLAB directory and type camd_make at the MATLAB prompt.

If you have MATLAB 7.2 or earlier and use "make mex", you must first edit
UFconfig/UFconfig.h to remove the "-largeArrayDims" option from the MEX command
(or just use camd_make.m inside MATLAB).

-------------------------------------------------------------------------------

CAMD License:

    Your use or distribution of CAMD or any modified version of
    CAMD implies that you agree to this License.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
    USA

    Permission is hereby granted to use or copy this program under the
    terms of the GNU LGPL, provided that the Copyright, this License,
    and the Availability of the original version is retained on all copies.
    User documentation of any code that uses this code or any modified
    version of this code must cite the Copyright, this License, the
    Availability note, and "Used by permission." Permission to modify
    the code and to distribute modified code is granted, provided the
    Copyright, this License, and the Availability note are retained,
    and a notice that the code was modified is included.

Availability:

    http://www.cise.ufl.edu/research/sparse/camd

-------------------------------------------------------------------------------

This is the CAMD README file.  It is a terse overview of CAMD.
Refer to the User Guide (Doc/CAMD_UserGuide.pdf) for how to install
and use CAMD.

Description:

    CAMD is a set of routines for pre-ordering sparse matrices prior to Cholesky
    or LU factorization, using the approximate minimum degree ordering
    algorithm with optional ordering constraints.  Written in ANSI/ISO C with
    a MATLAB interface.

Authors:

    Timothy A. Davis (davis at cise.ufl.edu), University of Florida.
    Patrick R. Amestory, ENSEEIHT, Toulouse, France.
    Iain S. Duff, Rutherford Appleton Laboratory, UK.

Acknowledgements:

    This work was supported by the National Science Foundation, under
    grants DMS-9504974, DMS-9803599, and CCR-0203270.

    Portions of this work were done while on sabbatical at Stanford University
    and Lawrence Berkeley National Laboratory (with funding from the SciDAC
    program).  I would like to thank Gene Golub, Esmond Ng, and Horst Simon
    for making this sabbatical possible.

-------------------------------------------------------------------------------
Files and directories in the CAMD distribution:
-------------------------------------------------------------------------------

    ---------------------------------------------------------------------------
    Subdirectories of the CAMD directory:
    ---------------------------------------------------------------------------

    Doc		documentation
    Source	primary source code
    Include	include file for use in your code that calls CAMD
    Demo	demo programs.  also serves as test of the CAMD installation.
    MATLAB	CAMD mexFunction for MATLAB, and supporting m-files
    Lib		where the compiled C-callable and Fortran-callable
		CAMD libraries placed.

    ---------------------------------------------------------------------------
    Files in the CAMD directory:
    ---------------------------------------------------------------------------

    Makefile	top-level Makefile for GNU make or original make.
		Windows users would require Cygwin to use "make"

    README.txt	this file

    ---------------------------------------------------------------------------
    Doc directory: documentation
    ---------------------------------------------------------------------------

    ChangeLog			change log
    License			the CAMD License
    Makefile			for creating the documentation
    CAMD_UserGuide.bib		CAMD User Guide (references)
    CAMD_UserGuide.tex		CAMD User Guide (LaTeX)
    CAMD_UserGuide.pdf		CAMD User Guide (PDF)
    lesser.txt			the GNU LGPL license

    docdiff			tools for comparing CAMD with AMD
    cdiff
    camd.sed

    ---------------------------------------------------------------------------
    Source directory:
    ---------------------------------------------------------------------------

    camd_order.c		user-callable, primary CAMD ordering routine
    camd_control.c		user-callable, prints the control parameters
    camd_defaults.c		user-callable, sets default control parameters
    camd_info.c			user-callable, prints the statistics from CAMD

    camd_1.c			non-user-callable, construct A+A'
    camd_2.c			user-callable, primary ordering kernel
				(a C version of camd.f and camdbar.f, with
				post-ordering added)
    camd_aat.c			non-user-callable, computes nnz (A+A')
    camd_dump.c			non-user-callable, debugging routines
    camd_postorder.c		non-user-callable, postorder
    camd_valid.c		non-user-callable, verifies a matrix
    camd_preprocess.c		non-user-callable, computes A', removes duplic

    ---------------------------------------------------------------------------
    Include directory:
    ---------------------------------------------------------------------------

    camd.h			include file for C programs that use CAMD
    camd_internal.h		non-user-callable, include file for CAMD

    ---------------------------------------------------------------------------
    Demo directory:
    ---------------------------------------------------------------------------

    Makefile			for GNU make or original make

    camd_demo.c			C demo program for CAMD
    camd_demo.out		output of camd_demo.c

    camd_demo2.c		C demo program for CAMD, jumbled matrix
    camd_demo2.out		output of camd_demo2.c

    camd_l_demo.c		C demo program for CAMD ("long" version)
    camd_l_demo.out		output of camd_l_demo.c

    camd_simple.c		simple C demo program for CAMD
    camd_simple.out		output of camd_simple.c

    ---------------------------------------------------------------------------
    MATLAB directory:
    ---------------------------------------------------------------------------

    GNUmakefile			a nice Makefile, for GNU make
    Makefile			an ugly Unix Makefile (for older make's)

    Contents.m			for "help camd" listing of toolbox contents

    camd.m			MATLAB help file for CAMD
    camd_make.m			MATLAB m-file for compiling CAMD mexFunction
    camd_install.m		compile and install CAMD mexFunctions

    camd_mex.c			CAMD mexFunction for MATLAB

    camd_demo.m			MATLAB demo for CAMD
    camd_demo.m.out		diary output of camd_demo.m
    can_24.mat			input file for CAMD demo

    ---------------------------------------------------------------------------
    Lib directory:  libcamd.a library placed here
    ---------------------------------------------------------------------------

    GNUmakefile			a nice Makefile, for GNU make
    Makefile			an ugly Unix Makefile (for older make's)
    libcamd.def			CAMD definitions for Windows
