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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
Copyright(C) 2017-2018 Brazil
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef GRN_EMBEDDED
# define GRN_PLUGIN_FUNCTION_TAG functions_math
#endif
#include <groonga/plugin.h>
#include <math.h>
#include <stdlib.h>
static grn_obj *
func_math_abs(grn_ctx *ctx, int n_args, grn_obj **args,
grn_user_data *user_data)
{
grn_obj *number;
grn_obj *grn_abs_number = NULL;
if (n_args != 1) {
GRN_PLUGIN_ERROR(ctx, GRN_INVALID_ARGUMENT,
"math_abs(): wrong number of arguments (%d for 1)",
n_args);
return NULL;
}
number = args[0];
if (!(number->header.type == GRN_BULK &&
grn_type_id_is_number_family(ctx, number->header.domain))) {
grn_obj inspected;
GRN_TEXT_INIT(&inspected, 0);
grn_inspect(ctx, &inspected, number);
GRN_PLUGIN_ERROR(ctx, GRN_INVALID_ARGUMENT,
"math_abs(): the first argument must be a number: "
"<%.*s>",
(int)GRN_TEXT_LEN(&inspected),
GRN_TEXT_VALUE(&inspected));
GRN_OBJ_FIN(ctx, &inspected);
return NULL;
}
#define ABS_AS_IS(return_type, to_type, getter, setter) { \
grn_abs_number = grn_plugin_proc_alloc(ctx, \
user_data, \
(return_type), \
0); \
if (!grn_abs_number) { \
return NULL; \
} \
setter(ctx, grn_abs_number, getter(number)); \
}
#define ABS_CONVERT_TYPE(func, return_type, to_type, getter, setter) { \
grn_abs_number = grn_plugin_proc_alloc(ctx, \
user_data, \
(return_type), \
0); \
if (!grn_abs_number) { \
return NULL; \
} \
{ \
to_type abs_number_raw = (to_type)(func)(getter(number)); \
setter(ctx, grn_abs_number, abs_number_raw); \
} \
}
switch (number->header.domain) {
case GRN_DB_INT8:
ABS_CONVERT_TYPE(abs, GRN_DB_UINT8, uint8_t, GRN_INT8_VALUE, GRN_UINT8_SET);
break;
case GRN_DB_UINT8:
ABS_AS_IS(GRN_DB_UINT8, uint8_t, GRN_UINT8_VALUE, GRN_UINT8_SET);
break;
case GRN_DB_INT16:
ABS_CONVERT_TYPE(abs, GRN_DB_UINT16, uint16_t, GRN_INT16_VALUE, GRN_UINT16_SET);
break;
case GRN_DB_UINT16:
ABS_AS_IS(GRN_DB_UINT16, uint16_t, GRN_UINT16_VALUE, GRN_UINT16_SET);
break;
case GRN_DB_INT32:
ABS_CONVERT_TYPE(labs, GRN_DB_UINT32, uint32_t, GRN_INT32_VALUE, GRN_UINT32_SET);
break;
case GRN_DB_UINT32:
ABS_AS_IS(GRN_DB_UINT32, uint32_t, GRN_UINT32_VALUE, GRN_UINT32_SET);
break;
case GRN_DB_INT64:
ABS_CONVERT_TYPE(llabs, GRN_DB_UINT64, uint64_t, GRN_INT64_VALUE, GRN_UINT64_SET);
break;
case GRN_DB_UINT64:
ABS_AS_IS(GRN_DB_UINT64, uint64_t, GRN_UINT64_VALUE, GRN_UINT64_SET);
break;
case GRN_DB_FLOAT:
ABS_CONVERT_TYPE(fabs, GRN_DB_FLOAT, double, GRN_FLOAT_VALUE, GRN_FLOAT_SET);
break;
default :
break;
}
#undef ABS_CONVERT_TYPE
#undef ABS_AS_IS
return grn_abs_number;
}
grn_rc
GRN_PLUGIN_INIT(grn_ctx *ctx)
{
return ctx->rc;
}
grn_rc
GRN_PLUGIN_REGISTER(grn_ctx *ctx)
{
grn_rc rc = GRN_SUCCESS;
grn_proc_create(ctx,
"math_abs", -1,
GRN_PROC_FUNCTION,
func_math_abs,
NULL, NULL, 0, NULL);
return rc;
}
grn_rc
GRN_PLUGIN_FIN(grn_ctx *ctx)
{
return GRN_SUCCESS;
}
|
