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快速傅立叶变换程序代码,学信号的同学,可要注意了

/*   code6 and gallager - software to manufacture, and
                          simulate decoding of low-density parity-check codes
			  
     Copyright   (c) 2002   David J.C. MacKay

     You may also find useful the MNC.tar package, which
     implements encoding as well as decoding, and has
     a fully modular structure - i.e. encoding, transmission and
     decoding are simulated by separate executables.

NOTES -

My Makefile methodology is to have all .o files
and all executables be put in a directory called
bin$ARC

eg bini386

This allows executables for many platforms
to be made within a single location without
having to make clean every time the platform
is changed. Executables can be made simultaneously
on multiple platforms.


LICENSE -      

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    GNU licenses are here :
    http://www.gnu.org/licenses/licenses.html

    Author contact details are here :
    http://www.inference.phy.cam.ac.uk/mackay/

    If you find this software useful, please feel free to make a donation to
    support David MacKay's research group.
*/