/* block/fwrite_source.c

 * 

 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Gerard Jungman, Brian Gough

 * 

 * 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 */

int

FUNCTION (gsl_block, fread) (FILE * stream, TYPE(gsl_block) * b)

{

  size_t n = b->size ;

  ATOMIC * data = b->data ;

  size_t items = fread (data, MULTIPLICITY * sizeof (ATOMIC), n, stream);

  if (items != n)

    {

      GSL_ERROR ("fread failed", GSL_EFAILED);

    }

return 0;

}

int

FUNCTION (gsl_block, fwrite) (FILE * stream, const TYPE(gsl_block) * b)

{

  size_t n = b->size ;

  ATOMIC * data = b->data ;

  size_t items = fwrite (data, MULTIPLICITY * sizeof (ATOMIC), n, stream);

  if (items != n)

    {

      GSL_ERROR ("fwrite failed", GSL_EFAILED);

    }

  return 0;

}

int

FUNCTION (gsl_block, raw_fread) (FILE * stream, ATOMIC * data, 

                                 const size_t n, const size_t stride)

{

  if (stride == 1)

    {

      size_t items = fread (data, MULTIPLICITY * sizeof (ATOMIC), n, stream);

      if (items != n)

        {

          GSL_ERROR ("fread failed", GSL_EFAILED);

        }

    }

  else

    {

      size_t i;

      for (i = 0; i < n; i++)

        {

          size_t item = fread (data + MULTIPLICITY * i * stride,

                               MULTIPLICITY * sizeof (ATOMIC), 1, stream);

          if (item != 1)

            {

              GSL_ERROR ("fread failed", GSL_EFAILED);

            }

        }

    }

  return GSL_SUCCESS;

}

int

FUNCTION (gsl_block, raw_fwrite) (FILE * stream, const ATOMIC * data,

                                  const size_t n, const size_t stride)

{

  if (stride == 1)

    {

      size_t items = fwrite (data, MULTIPLICITY * sizeof (ATOMIC), n, stream);

      if (items != n)

        {

          GSL_ERROR ("fwrite failed", GSL_EFAILED);

        }

    }

  else

    {

      size_t i;

      for (i = 0; i < n; i++)

        {

          size_t item = fwrite (data + MULTIPLICITY * i * stride,

                                MULTIPLICITY * sizeof (ATOMIC),

                                1, stream);

          if (item != 1)

            {

              GSL_ERROR ("fwrite failed", GSL_EFAILED);

            }

        }

    }

  return GSL_SUCCESS;

}