← Back to branch summary

~drizzle-trunk/drizzle/development

« back to all changes in this revision

Viewing changes to drizzled/functions/num_op.cc

  • Committer: Paul McCullagh
  • Date: 2008-10-10 12:42:11 UTC
  • mfrom: (499 drizzle)
  • mto: (499.1.1 codestyle)
  • mto: This revision was merged to the branch mainline in revision 505.
  • Revision ID: paul.mccullagh@primebase.org-20081010124211-hxs9ny96auxpq2ag
Merged trunk

Show diffs side-by-side

added added

removed removed

Lines of Context:
drizzled/functions/num_op.cc
 
1
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
 
2
 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 
3
 *
 
4
 *  Copyright (C) 2008 Sun Microsystems
 
5
 *
 
6
 *  This program is free software; you can redistribute it and/or modify
 
7
 *  it under the terms of the GNU General Public License as published by
 
8
 *  the Free Software Foundation; version 2 of the License.
 
9
 *
 
10
 *  This program is distributed in the hope that it will be useful,
 
11
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
13
 *  GNU General Public License for more details.
 
14
 *
 
15
 *  You should have received a copy of the GNU General Public License
 
16
 *  along with this program; if not, write to the Free Software
 
17
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
18
 */
 
19
 
 
20
#include <drizzled/server_includes.h>
 
21
 
 
22
#include CSTDINT_H
 
23
#include <cassert>
 
24
 
 
25
#include <drizzled/functions/num_op.h>
 
26
 
 
27
/**
 
28
  Check arguments here to determine result's type for a numeric
 
29
  function of two arguments.
 
30
*/
 
31
 
 
32
void Item_num_op::find_num_type(void)
 
33
{
 
34
  assert(arg_count == 2);
 
35
  Item_result r0= args[0]->result_type();
 
36
  Item_result r1= args[1]->result_type();
 
37
 
 
38
  if (r0 == REAL_RESULT || r1 == REAL_RESULT ||
 
39
      r0 == STRING_RESULT || r1 ==STRING_RESULT)
 
40
  {
 
41
    count_real_length();
 
42
    max_length= float_length(decimals);
 
43
    hybrid_type= REAL_RESULT;
 
44
  }
 
45
  else if (r0 == DECIMAL_RESULT || r1 == DECIMAL_RESULT)
 
46
  {
 
47
    hybrid_type= DECIMAL_RESULT;
 
48
    result_precision();
 
49
  }
 
50
  else
 
51
  {
 
52
    assert(r0 == INT_RESULT && r1 == INT_RESULT);
 
53
    decimals= 0;
 
54
    hybrid_type=INT_RESULT;
 
55
    result_precision();
 
56
  }
 
57
  return;
 
58
}
 
59
 
 
60
 
 
61