~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  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; version 2 of the License.

 *

 *  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 St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include <config.h>

#include <drizzled/field.h>

#include <drizzled/hybrid_type.h>

#include <drizzled/hybrid_type_traits.h>

#include <drizzled/item.h>

#include <math.h>

namespace drizzled

{

static const Hybrid_type_traits real_traits_instance;

Item_result Hybrid_type_traits::type() const

{

  return REAL_RESULT;

}

void Hybrid_type_traits::fix_length_and_dec(Item *item, Item *arg) const

{

  item->decimals= NOT_FIXED_DEC;

  item->max_length= item->float_length(arg->decimals);

}

/* Hybrid_type operations. */

void Hybrid_type_traits::set_zero(Hybrid_type *val) const

{

  val->real= 0.0;

}

void Hybrid_type_traits::add(Hybrid_type *val, Field *f) const

{

  val->real+= f->val_real();

}

void Hybrid_type_traits::div(Hybrid_type *val, uint64_t u) const

{

  val->real/= uint64_t2double(u);

}

int64_t Hybrid_type_traits::val_int(Hybrid_type *val,

                                    bool) const

{

  return (int64_t) rint(val->real);

}

double Hybrid_type_traits::val_real(Hybrid_type *val) const

{

  return val->real;

}

type::Decimal *

Hybrid_type_traits::val_decimal(Hybrid_type *val, type::Decimal *) const

{

  double2_class_decimal(E_DEC_FATAL_ERROR, val->real, val->dec_buf);

  return val->dec_buf;

}

String *

Hybrid_type_traits::val_str(Hybrid_type *val, String *to,

                            uint8_t decimals) const

{

  to->set_real(val->real, decimals, &my_charset_bin);

  return to;

}

const Hybrid_type_traits *Hybrid_type_traits::instance()

{

  return &real_traits_instance;

}

Hybrid_type_traits::Hybrid_type_traits()

{}

Hybrid_type_traits::~Hybrid_type_traits()

{}

} /* namespace drizzled */