summaryrefslogtreecommitdiffstats
path: root/contrib/btree_gist/btree_int8.c
blob: df2b0d174b965fc96baf1cb1467372aa999f6229 (plain)
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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
/*
 * contrib/btree_gist/btree_int8.c
 */
#include "postgres.h"

#include "btree_gist.h"
#include "btree_utils_num.h"
#include "common/int.h"

typedef struct int64key
{
	int64		lower;
	int64		upper;
} int64KEY;

/*
** int64 ops
*/
PG_FUNCTION_INFO_V1(gbt_int8_compress);
PG_FUNCTION_INFO_V1(gbt_int8_fetch);
PG_FUNCTION_INFO_V1(gbt_int8_union);
PG_FUNCTION_INFO_V1(gbt_int8_picksplit);
PG_FUNCTION_INFO_V1(gbt_int8_consistent);
PG_FUNCTION_INFO_V1(gbt_int8_distance);
PG_FUNCTION_INFO_V1(gbt_int8_penalty);
PG_FUNCTION_INFO_V1(gbt_int8_same);


static bool
gbt_int8gt(const void *a, const void *b, FmgrInfo *flinfo)
{
	return (*((const int64 *) a) > *((const int64 *) b));
}
static bool
gbt_int8ge(const void *a, const void *b, FmgrInfo *flinfo)
{
	return (*((const int64 *) a) >= *((const int64 *) b));
}
static bool
gbt_int8eq(const void *a, const void *b, FmgrInfo *flinfo)
{
	return (*((const int64 *) a) == *((const int64 *) b));
}
static bool
gbt_int8le(const void *a, const void *b, FmgrInfo *flinfo)
{
	return (*((const int64 *) a) <= *((const int64 *) b));
}
static bool
gbt_int8lt(const void *a, const void *b, FmgrInfo *flinfo)
{
	return (*((const int64 *) a) < *((const int64 *) b));
}

static int
gbt_int8key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
{
	int64KEY   *ia = (int64KEY *) (((const Nsrt *) a)->t);
	int64KEY   *ib = (int64KEY *) (((const Nsrt *) b)->t);

	if (ia->lower == ib->lower)
	{
		if (ia->upper == ib->upper)
			return 0;

		return (ia->upper > ib->upper) ? 1 : -1;
	}

	return (ia->lower > ib->lower) ? 1 : -1;
}

static float8
gbt_int8_dist(const void *a, const void *b, FmgrInfo *flinfo)
{
	return GET_FLOAT_DISTANCE(int64, a, b);
}


static const gbtree_ninfo tinfo =
{
	gbt_t_int8,
	sizeof(int64),
	16,							/* sizeof(gbtreekey16) */
	gbt_int8gt,
	gbt_int8ge,
	gbt_int8eq,
	gbt_int8le,
	gbt_int8lt,
	gbt_int8key_cmp,
	gbt_int8_dist
};


PG_FUNCTION_INFO_V1(int8_dist);
Datum
int8_dist(PG_FUNCTION_ARGS)
{
	int64		a = PG_GETARG_INT64(0);
	int64		b = PG_GETARG_INT64(1);
	int64		r;
	int64		ra;

	if (pg_sub_s64_overflow(a, b, &r) ||
		r == PG_INT64_MIN)
		ereport(ERROR,
				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
				 errmsg("bigint out of range")));

	ra = Abs(r);

	PG_RETURN_INT64(ra);
}


/**************************************************
 * int64 ops
 **************************************************/


Datum
gbt_int8_compress(PG_FUNCTION_ARGS)
{
	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);

	PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
}

Datum
gbt_int8_fetch(PG_FUNCTION_ARGS)
{
	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);

	PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
}

Datum
gbt_int8_consistent(PG_FUNCTION_ARGS)
{
	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
	int64		query = PG_GETARG_INT64(1);
	StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);

	/* Oid		subtype = PG_GETARG_OID(3); */
	bool	   *recheck = (bool *) PG_GETARG_POINTER(4);
	int64KEY   *kkk = (int64KEY *) DatumGetPointer(entry->key);
	GBT_NUMKEY_R key;

	/* All cases served by this function are exact */
	*recheck = false;

	key.lower = (GBT_NUMKEY *) &kkk->lower;
	key.upper = (GBT_NUMKEY *) &kkk->upper;

	PG_RETURN_BOOL(gbt_num_consistent(&key, (void *) &query, &strategy,
									  GIST_LEAF(entry), &tinfo, fcinfo->flinfo));
}


Datum
gbt_int8_distance(PG_FUNCTION_ARGS)
{
	GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
	int64		query = PG_GETARG_INT64(1);

	/* Oid		subtype = PG_GETARG_OID(3); */
	int64KEY   *kkk = (int64KEY *) DatumGetPointer(entry->key);
	GBT_NUMKEY_R key;

	key.lower = (GBT_NUMKEY *) &kkk->lower;
	key.upper = (GBT_NUMKEY *) &kkk->upper;

	PG_RETURN_FLOAT8(gbt_num_distance(&key, (void *) &query, GIST_LEAF(entry),
									  &tinfo, fcinfo->flinfo));
}


Datum
gbt_int8_union(PG_FUNCTION_ARGS)
{
	GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
	void	   *out = palloc(sizeof(int64KEY));

	*(int *) PG_GETARG_POINTER(1) = sizeof(int64KEY);
	PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo, fcinfo->flinfo));
}


Datum
gbt_int8_penalty(PG_FUNCTION_ARGS)
{
	int64KEY   *origentry = (int64KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
	int64KEY   *newentry = (int64KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
	float	   *result = (float *) PG_GETARG_POINTER(2);

	penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);

	PG_RETURN_POINTER(result);
}

Datum
gbt_int8_picksplit(PG_FUNCTION_ARGS)
{
	PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0),
										(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
										&tinfo, fcinfo->flinfo));
}

Datum
gbt_int8_same(PG_FUNCTION_ARGS)
{
	int64KEY   *b1 = (int64KEY *) PG_GETARG_POINTER(0);
	int64KEY   *b2 = (int64KEY *) PG_GETARG_POINTER(1);
	bool	   *result = (bool *) PG_GETARG_POINTER(2);

	*result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
	PG_RETURN_POINTER(result);
}