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 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/