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# TestAccuracy.h Example File

demos/spectrum/3rdparty/fftreal/TestAccuracy.h

     /*****************************************************************************

             TestAccuracy.h
             Copyright (c) 2005 Laurent de Soras

     --- Legal stuff ---

     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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

     *Tab=3***********************************************************************/

     #if ! defined (TestAccuracy_HEADER_INCLUDED)
     #define TestAccuracy_HEADER_INCLUDED

     #if defined (_MSC_VER)
             #pragma once
             #pragma warning (4 : 4250) // "Inherits via dominance."
     #endif

     /*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

     template <class FO>
     class TestAccuracy
     {

     /*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

     public:

             typedef typename FO::DataType   DataType;
             typedef long double     BigFloat;       // To get maximum accuracy during intermediate calculations

        static int           perform_test_single_object (FO &fft);
        static int           perform_test_d (FO &fft, const char *class_name_0);
        static int           perform_test_i (FO &fft, const char *class_name_0);
        static int           perform_test_di (FO &fft, const char *class_name_0);

     /*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

     protected:

     /*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

     private:

             enum {                  NBR_ACC_TESTS   = 10 * 1000 * 1000      };
        enum {         MAX_NBR_TESTS  = 10000  };

        static void          compute_tf (DataType s [], const DataType x [], long length);
             static void             compute_itf (DataType x [], const DataType s [], long length);
             static int              compare_vect_display (const DataType x_ptr [], const DataType y_ptr [], long len, BigFloat &max_err_rel);
             static BigFloat
                                                     compute_power (const DataType x_ptr [], long len);
             static BigFloat
                                                     compute_power (const DataType x_ptr [], const DataType y_ptr [], long len);
             static void             compare_vect (const DataType x_ptr [], const DataType y_ptr [], BigFloat &power, long &max_err_pos, long len);

     /*\\\ FORBIDDEN MEMBER FUNCTIONS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

     private:

                                                     TestAccuracy ();
                                                     ~TestAccuracy ();
                                                     TestAccuracy (const TestAccuracy &other);
             TestAccuracy &  operator = (const TestAccuracy &other);
             bool                            operator == (const TestAccuracy &other);
             bool                            operator != (const TestAccuracy &other);

     };      // class TestAccuracy

     #include        "TestAccuracy.hpp"

     #endif  // TestAccuracy_HEADER_INCLUDED

     /*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/