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btree_float8.c
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1/*
2 * contrib/btree_gist/btree_float8.c
3 */
4#include "postgres.h"
5
6#include "btree_gist.h"
7#include "btree_utils_num.h"
8#include "utils/float.h"
9#include "utils/rel.h"
10#include "utils/sortsupport.h"
11
12typedef struct float8key
13{
17
18/* GiST support functions */
28
29
30static bool
31gbt_float8gt(const void *a, const void *b, FmgrInfo *flinfo)
32{
33 return (*((const float8 *) a) > *((const float8 *) b));
34}
35static bool
36gbt_float8ge(const void *a, const void *b, FmgrInfo *flinfo)
37{
38 return (*((const float8 *) a) >= *((const float8 *) b));
39}
40static bool
41gbt_float8eq(const void *a, const void *b, FmgrInfo *flinfo)
42{
43 return (*((const float8 *) a) == *((const float8 *) b));
44}
45static bool
46gbt_float8le(const void *a, const void *b, FmgrInfo *flinfo)
47{
48 return (*((const float8 *) a) <= *((const float8 *) b));
49}
50static bool
51gbt_float8lt(const void *a, const void *b, FmgrInfo *flinfo)
52{
53 return (*((const float8 *) a) < *((const float8 *) b));
54}
55
56static int
57gbt_float8key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
58{
59 float8KEY *ia = (float8KEY *) (((const Nsrt *) a)->t);
60 float8KEY *ib = (float8KEY *) (((const Nsrt *) b)->t);
61
62 if (ia->lower == ib->lower)
63 {
64 if (ia->upper == ib->upper)
65 return 0;
66
67 return (ia->upper > ib->upper) ? 1 : -1;
68 }
69
70 return (ia->lower > ib->lower) ? 1 : -1;
71}
72
73static float8
74gbt_float8_dist(const void *a, const void *b, FmgrInfo *flinfo)
75{
76 float8 arg1 = *(const float8 *) a;
77 float8 arg2 = *(const float8 *) b;
78 float8 r;
79
80 r = arg1 - arg2;
81 if (unlikely(isinf(r)) && !isinf(arg1) && !isinf(arg2))
83 return fabs(r);
84}
85
86
87static const gbtree_ninfo tinfo =
88{
90 sizeof(float8),
91 16, /* sizeof(gbtreekey16) */
99};
100
101
103Datum
105{
108 float8 r;
109
110 r = a - b;
111 if (unlikely(isinf(r)) && !isinf(a) && !isinf(b))
113
114 PG_RETURN_FLOAT8(fabs(r));
115}
116
117
118/**************************************************
119 * GiST support functions
120 **************************************************/
121
122Datum
124{
125 GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
126
128}
129
130Datum
132{
133 GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
134
136}
137
138Datum
140{
141 GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
142 float8 query = PG_GETARG_FLOAT8(1);
144
145 /* Oid subtype = PG_GETARG_OID(3); */
146 bool *recheck = (bool *) PG_GETARG_POINTER(4);
147 float8KEY *kkk = (float8KEY *) DatumGetPointer(entry->key);
149
150 /* All cases served by this function are exact */
151 *recheck = false;
152
153 key.lower = (GBT_NUMKEY *) &kkk->lower;
154 key.upper = (GBT_NUMKEY *) &kkk->upper;
155
156 PG_RETURN_BOOL(gbt_num_consistent(&key, &query, &strategy,
157 GIST_LEAF(entry), &tinfo,
158 fcinfo->flinfo));
159}
160
161Datum
163{
164 GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
165 float8 query = PG_GETARG_FLOAT8(1);
166
167 /* Oid subtype = PG_GETARG_OID(3); */
168 float8KEY *kkk = (float8KEY *) DatumGetPointer(entry->key);
170
171 key.lower = (GBT_NUMKEY *) &kkk->lower;
172 key.upper = (GBT_NUMKEY *) &kkk->upper;
173
175 &tinfo, fcinfo->flinfo));
176}
177
178Datum
180{
182 void *out = palloc(sizeof(float8KEY));
183
184 *(int *) PG_GETARG_POINTER(1) = sizeof(float8KEY);
185 PG_RETURN_POINTER(gbt_num_union(out, entryvec, &tinfo, fcinfo->flinfo));
186}
187
188Datum
190{
191 float8KEY *origentry = (float8KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
193 float *result = (float *) PG_GETARG_POINTER(2);
194
195 penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
196
197 PG_RETURN_POINTER(result);
198}
199
200Datum
202{
205 &tinfo, fcinfo->flinfo));
206}
207
208Datum
210{
213 bool *result = (bool *) PG_GETARG_POINTER(2);
214
215 *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
216 PG_RETURN_POINTER(result);
217}
218
219static int
221{
224
225 /* for leaf items we expect lower == upper, so only compare lower */
226 return float8_cmp_internal(arg1->lower, arg2->lower);
227}
228
229Datum
231{
233
235 ssup->ssup_extra = NULL;
236
238}
Datum gbt_float8_same(PG_FUNCTION_ARGS)
Definition: btree_float8.c:209
struct float8key float8KEY
static int gbt_float8_ssup_cmp(Datum x, Datum y, SortSupport ssup)
Definition: btree_float8.c:220
static bool gbt_float8eq(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float8.c:41
Datum gbt_float8_picksplit(PG_FUNCTION_ARGS)
Definition: btree_float8.c:201
PG_FUNCTION_INFO_V1(gbt_float8_compress)
static bool gbt_float8gt(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float8.c:31
Datum gbt_float8_sortsupport(PG_FUNCTION_ARGS)
Definition: btree_float8.c:230
static float8 gbt_float8_dist(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float8.c:74
static const gbtree_ninfo tinfo
Definition: btree_float8.c:87
Datum gbt_float8_compress(PG_FUNCTION_ARGS)
Definition: btree_float8.c:123
Datum gbt_float8_fetch(PG_FUNCTION_ARGS)
Definition: btree_float8.c:131
Datum gbt_float8_distance(PG_FUNCTION_ARGS)
Definition: btree_float8.c:162
static bool gbt_float8le(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float8.c:46
static bool gbt_float8ge(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float8.c:36
static int gbt_float8key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float8.c:57
Datum float8_dist(PG_FUNCTION_ARGS)
Definition: btree_float8.c:104
Datum gbt_float8_union(PG_FUNCTION_ARGS)
Definition: btree_float8.c:179
static bool gbt_float8lt(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float8.c:51
Datum gbt_float8_penalty(PG_FUNCTION_ARGS)
Definition: btree_float8.c:189
Datum gbt_float8_consistent(PG_FUNCTION_ARGS)
Definition: btree_float8.c:139
@ gbt_t_float8
Definition: btree_gist.h:21
GISTENTRY * gbt_num_compress(GISTENTRY *entry, const gbtree_ninfo *tinfo)
float8 gbt_num_distance(const GBT_NUMKEY_R *key, const void *query, bool is_leaf, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
bool gbt_num_consistent(const GBT_NUMKEY_R *key, const void *query, const StrategyNumber *strategy, bool is_leaf, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
bool gbt_num_same(const GBT_NUMKEY *a, const GBT_NUMKEY *b, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
GISTENTRY * gbt_num_fetch(GISTENTRY *entry, const gbtree_ninfo *tinfo)
GIST_SPLITVEC * gbt_num_picksplit(const GistEntryVector *entryvec, GIST_SPLITVEC *v, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
void * gbt_num_union(GBT_NUMKEY *out, const GistEntryVector *entryvec, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
#define penalty_num(result, olower, oupper, nlower, nupper)
char GBT_NUMKEY
double float8
Definition: c.h:636
#define unlikely(x)
Definition: c.h:403
pg_noinline void float_overflow_error(void)
Definition: float.c:86
int float8_cmp_internal(float8 a, float8 b)
Definition: float.c:910
#define PG_RETURN_VOID()
Definition: fmgr.h:349
#define PG_GETARG_FLOAT8(n)
Definition: fmgr.h:282
#define PG_RETURN_FLOAT8(x)
Definition: fmgr.h:367
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:276
#define PG_GETARG_UINT16(n)
Definition: fmgr.h:272
#define PG_RETURN_POINTER(x)
Definition: fmgr.h:361
#define PG_FUNCTION_ARGS
Definition: fmgr.h:193
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:359
#define GIST_LEAF(entry)
Definition: gist.h:171
int y
Definition: isn.c:76
int b
Definition: isn.c:74
int x
Definition: isn.c:75
int a
Definition: isn.c:73
void * palloc(Size size)
Definition: mcxt.c:1365
uint64_t Datum
Definition: postgres.h:70
static Pointer DatumGetPointer(Datum X)
Definition: postgres.h:322
struct SortSupportData * SortSupport
Definition: sortsupport.h:58
uint16 StrategyNumber
Definition: stratnum.h:22
Definition: fmgr.h:57
Datum key
Definition: gist.h:161
int(* comparator)(Datum x, Datum y, SortSupport ssup)
Definition: sortsupport.h:106
void * ssup_extra
Definition: sortsupport.h:87
float8 upper
Definition: btree_float8.c:15
float8 lower
Definition: btree_float8.c:14