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/* -*- 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/type/decimal.h>
#include <drizzled/function/math/int_val.h>
namespace drizzled
{
void Item_func_int_val::fix_num_length_and_dec()
{
max_length= args[0]->max_length - (args[0]->decimals ?
args[0]->decimals + 1 :
0) + 2;
uint32_t tmp= float_length(decimals);
set_if_smaller(max_length,tmp);
decimals= 0;
}
void Item_func_int_val::find_num_type()
{
switch(hybrid_type= args[0]->result_type())
{
case STRING_RESULT:
case REAL_RESULT:
hybrid_type= REAL_RESULT;
max_length= float_length(decimals);
break;
case INT_RESULT:
case DECIMAL_RESULT:
/*
-2 because in most high position can't be used any digit for int64_t
and one position for increasing value during operation
*/
if ((args[0]->max_length - args[0]->decimals) >=
(DECIMAL_LONGLONG_DIGITS - 2))
{
hybrid_type= DECIMAL_RESULT;
}
else
{
unsigned_flag= args[0]->unsigned_flag;
hybrid_type= INT_RESULT;
}
break;
default:
assert(0);
}
return;
}
} /* namespace drizzled */
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