Drizzled Public API Documentation

real.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, Inc.
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 <config.h>
21 #include <math.h>
22 #include <drizzled/function/math/real.h>
23 
24 namespace drizzled
25 {
26 
27 
29 {
30  assert(fixed == 1);
31  double nr= val_real();
32  if (null_value)
33  return 0;
34  str->set_real(nr,decimals, &my_charset_bin);
35  return str;
36 }
37 
38 
40 {
41  assert(fixed);
42  double nr= val_real();
43  if (null_value)
44  return 0;
45  double2_class_decimal(E_DEC_FATAL_ERROR, nr, decimal_value);
46  return decimal_value;
47 }
48 
50 {
51  assert(fixed == 1);
52  return (int64_t) rint(val_real());
53 }
54 
55 void Item_real_func::fix_length_and_dec()
56 {
57  decimals= NOT_FIXED_DEC;
58  max_length= float_length(decimals);
59 }
60 
61 } /* namespace drizzled */
type::Decimal * val_decimal(type::Decimal *decimal_value)
Definition: real.cc:39
int64_t val_int()
Definition: real.cc:49
bool fixed
Definition: item.h:120
TODO: Rename this file - func.h is stupid.
bool null_value
Definition: item.h:122
virtual double val_real()=0
String * val_str(String *str)
Definition: real.cc:28