src/gromacs/simd/tests/data.h

   1 /*
   2  * This file is part of the GROMACS molecular simulation package.
   3  *
   4  * Copyright (c) 2014,2015,2016,2017, by the GROMACS development team, led by
   5  * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
   6  * and including many others, as listed in the AUTHORS file in the
   7  * top-level source directory and at http://www.gromacs.org.
   8  *
   9  * GROMACS is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public License
  11  * as published by the Free Software Foundation; either version 2.1
  12  * of the License, or (at your option) any later version.
  13  *
  14  * GROMACS is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with GROMACS; if not, see
  21  * http://www.gnu.org/licenses, or write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
  23  *
  24  * If you want to redistribute modifications to GROMACS, please
  25  * consider that scientific software is very special. Version
  26  * control is crucial - bugs must be traceable. We will be happy to
  27  * consider code for inclusion in the official distribution, but
  28  * derived work must not be called official GROMACS. Details are found
  29  * in the README & COPYING files - if they are missing, get the
  30  * official version at http://www.gromacs.org.
  31  *
  32  * To help us fund GROMACS development, we humbly ask that you cite
  33  * the research papers on the package. Check out http://www.gromacs.org.
  34  */
  35 #ifndef GMX_SIMD_TESTS_DATA_H
  36 #define GMX_SIMD_TESTS_DATA_H
  37
  38 /*! \internal \file
  39  * \brief Common test data constants for SIMD, SIMD4 and scalar tests
  40  *
  41  * To avoid silent bugs due to double/float truncation if we ever use the
  42  * wrong return type of routines, we want to use test data that fills all
  43  * available bits in either single or double precision. The values themselves
  44  * are meaningless.
  45  * Note that the data is used to initialize the SIMD constants, which for
  46  * technical (alignment) reasons in some compilers cannot be placed inside
  47  * the text fixture classes. For that reason this data cannot go in the
  48  * fixtures either.
  49  *
  50  * \author Erik Lindahl <erik.lindahl@scilifelab.se>
  51  * \ingroup module_simd
  52  */
  53
  54 #include "gromacs/utility/real.h"
  55
  56 namespace gmx
  57 {
  58 namespace test
  59 {
  60
  61 /*! \cond internal */
  62 /*! \addtogroup module_simd */
  63 /*! \{ */
  64 extern const real czero; //!< Value 0.0 in real precision
  65 extern const real c0;    //!< Random fp value using entire mantissa
  66 extern const real c1;    //!< Random fp value using entire mantissa
  67 extern const real c2;    //!< Random fp value using entire mantissa
  68 extern const real c3;    //!< Random fp value using entire mantissa
  69 extern const real c4;    //!< Random fp value using entire mantissa
  70 extern const real c5;    //!< Random fp value using entire mantissa
  71 extern const real c5;    //!< Random fp value using entire mantissa
  72 extern const real c6;    //!< Random fp value using entire mantissa
  73 extern const real c7;    //!< Random fp value using entire mantissa
  74 extern const real c8;    //!< Random fp value using entire mantissa
  75 extern const real c9;    //!< Random fp value using entire mantissa
  76
  77 /*! \} */
  78 /*! \endcond */
  79
  80 }      // namespace test
  81 }      // namespace gmx
  82
  83 #endif