1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems
*
* 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 <drizzled/server_includes.h>
#include <drizzled/hybrid_type_traits_decimal.h>
#include <drizzled/hybrid_type.h>
#include <drizzled/definitions.h>
#include <algorithm>
using namespace std;
/* Hybrid_type_traits_decimal */
static const Hybrid_type_traits_decimal decimal_traits_instance;
Item_result Hybrid_type_traits_decimal::type() const { return DECIMAL_RESULT; }
void
Hybrid_type_traits_decimal::fix_length_and_dec(Item *item, Item *arg) const
{
item->decimals= arg->decimals;
item->max_length= min(arg->max_length + DECIMAL_LONGLONG_DIGITS,
(unsigned int)DECIMAL_MAX_STR_LENGTH);
}
void Hybrid_type_traits_decimal::set_zero(Hybrid_type *val) const
{
my_decimal_set_zero(&val->dec_buf[0]);
val->used_dec_buf_no= 0;
}
void Hybrid_type_traits_decimal::add(Hybrid_type *val, Field *f) const
{
my_decimal_add(E_DEC_FATAL_ERROR,
&val->dec_buf[val->used_dec_buf_no ^ 1],
&val->dec_buf[val->used_dec_buf_no],
f->val_decimal(&val->dec_buf[2]));
val->used_dec_buf_no^= 1;
}
/**
@todo
what is '4' for scale?
*/
void Hybrid_type_traits_decimal::div(Hybrid_type *val, uint64_t u) const
{
int2my_decimal(E_DEC_FATAL_ERROR, u, true, &val->dec_buf[2]);
/* XXX: what is '4' for scale? */
my_decimal_div(E_DEC_FATAL_ERROR,
&val->dec_buf[val->used_dec_buf_no ^ 1],
&val->dec_buf[val->used_dec_buf_no],
&val->dec_buf[2], 4);
val->used_dec_buf_no^= 1;
}
int64_t
Hybrid_type_traits_decimal::val_int(Hybrid_type *val, bool unsigned_flag) const
{
int64_t result;
my_decimal2int(E_DEC_FATAL_ERROR, &val->dec_buf[val->used_dec_buf_no],
unsigned_flag, &result);
return result;
}
double
Hybrid_type_traits_decimal::val_real(Hybrid_type *val) const
{
my_decimal2double(E_DEC_FATAL_ERROR, &val->dec_buf[val->used_dec_buf_no],
&val->real);
return val->real;
}
my_decimal *Hybrid_type_traits_decimal::val_decimal(Hybrid_type *val,
my_decimal *) const
{ return &val->dec_buf[val->used_dec_buf_no]; }
String *
Hybrid_type_traits_decimal::val_str(Hybrid_type *val, String *to,
uint8_t decimals) const
{
my_decimal_round(E_DEC_FATAL_ERROR, &val->dec_buf[val->used_dec_buf_no],
decimals, false, &val->dec_buf[2]);
my_decimal2string(E_DEC_FATAL_ERROR, &val->dec_buf[2], 0, 0, 0, to);
return to;
}
const Hybrid_type_traits_decimal *Hybrid_type_traits_decimal::instance()
{
return &decimal_traits_instance;
}
Hybrid_type_traits_decimal::Hybrid_type_traits_decimal()
{}
|