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btree_float4.c
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1/*
2 * contrib/btree_gist/btree_float4.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 float4key
13{
17
18/* GiST support functions */
28
29static bool
30gbt_float4gt(const void *a, const void *b, FmgrInfo *flinfo)
31{
32 return (*((const float4 *) a) > *((const float4 *) b));
33}
34static bool
35gbt_float4ge(const void *a, const void *b, FmgrInfo *flinfo)
36{
37 return (*((const float4 *) a) >= *((const float4 *) b));
38}
39static bool
40gbt_float4eq(const void *a, const void *b, FmgrInfo *flinfo)
41{
42 return (*((const float4 *) a) == *((const float4 *) b));
43}
44static bool
45gbt_float4le(const void *a, const void *b, FmgrInfo *flinfo)
46{
47 return (*((const float4 *) a) <= *((const float4 *) b));
48}
49static bool
50gbt_float4lt(const void *a, const void *b, FmgrInfo *flinfo)
51{
52 return (*((const float4 *) a) < *((const float4 *) b));
53}
54
55static int
56gbt_float4key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
57{
58 float4KEY *ia = (float4KEY *) (((const Nsrt *) a)->t);
59 float4KEY *ib = (float4KEY *) (((const Nsrt *) b)->t);
60
61 if (ia->lower == ib->lower)
62 {
63 if (ia->upper == ib->upper)
64 return 0;
65
66 return (ia->upper > ib->upper) ? 1 : -1;
67 }
68
69 return (ia->lower > ib->lower) ? 1 : -1;
70}
71
72static float8
73gbt_float4_dist(const void *a, const void *b, FmgrInfo *flinfo)
74{
75 return GET_FLOAT_DISTANCE(float4, a, b);
76}
77
78
79static const gbtree_ninfo tinfo =
80{
82 sizeof(float4),
83 8, /* sizeof(gbtreekey8) */
91};
92
93
97{
100 float4 r;
101
102 r = a - b;
103 if (unlikely(isinf(r)) && !isinf(a) && !isinf(b))
105
106 PG_RETURN_FLOAT4(fabsf(r));
107}
108
109
110/**************************************************
111 * GiST support functions
112 **************************************************/
113
114Datum
116{
117 GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
118
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 float4 query = PG_GETARG_FLOAT4(1);
136
137 /* Oid subtype = PG_GETARG_OID(3); */
138 bool *recheck = (bool *) PG_GETARG_POINTER(4);
139 float4KEY *kkk = (float4KEY *) DatumGetPointer(entry->key);
141
142 /* All cases served by this function are exact */
143 *recheck = false;
144
145 key.lower = (GBT_NUMKEY *) &kkk->lower;
146 key.upper = (GBT_NUMKEY *) &kkk->upper;
147
148 PG_RETURN_BOOL(gbt_num_consistent(&key, &query, &strategy,
149 GIST_LEAF(entry), &tinfo,
150 fcinfo->flinfo));
151}
152
153Datum
155{
156 GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
157 float4 query = PG_GETARG_FLOAT4(1);
158
159 /* Oid subtype = PG_GETARG_OID(3); */
160 float4KEY *kkk = (float4KEY *) DatumGetPointer(entry->key);
162
163 key.lower = (GBT_NUMKEY *) &kkk->lower;
164 key.upper = (GBT_NUMKEY *) &kkk->upper;
165
167 &tinfo, fcinfo->flinfo));
168}
169
170Datum
172{
174 void *out = palloc(sizeof(float4KEY));
175
176 *(int *) PG_GETARG_POINTER(1) = sizeof(float4KEY);
177 PG_RETURN_POINTER(gbt_num_union(out, entryvec, &tinfo, fcinfo->flinfo));
178}
179
180Datum
182{
183 float4KEY *origentry = (float4KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
185 float *result = (float *) PG_GETARG_POINTER(2);
186
187 penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
188
189 PG_RETURN_POINTER(result);
190}
191
192Datum
194{
197 &tinfo, fcinfo->flinfo));
198}
199
200Datum
202{
205 bool *result = (bool *) PG_GETARG_POINTER(2);
206
207 *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
208 PG_RETURN_POINTER(result);
209}
210
211static int
213{
216
217 /* for leaf items we expect lower == upper, so only compare lower */
218 return float4_cmp_internal(arg1->lower, arg2->lower);
219}
220
221Datum
223{
225
227 ssup->ssup_extra = NULL;
228
230}
static bool gbt_float4eq(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float4.c:40
Datum gbt_float4_compress(PG_FUNCTION_ARGS)
Definition: btree_float4.c:115
Datum gbt_float4_same(PG_FUNCTION_ARGS)
Definition: btree_float4.c:201
Datum gbt_float4_union(PG_FUNCTION_ARGS)
Definition: btree_float4.c:171
Datum gbt_float4_picksplit(PG_FUNCTION_ARGS)
Definition: btree_float4.c:193
static bool gbt_float4gt(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float4.c:30
Datum gbt_float4_sortsupport(PG_FUNCTION_ARGS)
Definition: btree_float4.c:222
Datum gbt_float4_penalty(PG_FUNCTION_ARGS)
Definition: btree_float4.c:181
Datum gbt_float4_fetch(PG_FUNCTION_ARGS)
Definition: btree_float4.c:123
static float8 gbt_float4_dist(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float4.c:73
PG_FUNCTION_INFO_V1(gbt_float4_compress)
static bool gbt_float4le(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float4.c:45
static const gbtree_ninfo tinfo
Definition: btree_float4.c:79
struct float4key float4KEY
Datum gbt_float4_distance(PG_FUNCTION_ARGS)
Definition: btree_float4.c:154
Datum float4_dist(PG_FUNCTION_ARGS)
Definition: btree_float4.c:96
static int gbt_float4_ssup_cmp(Datum x, Datum y, SortSupport ssup)
Definition: btree_float4.c:212
static int gbt_float4key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float4.c:56
static bool gbt_float4lt(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float4.c:50
Datum gbt_float4_consistent(PG_FUNCTION_ARGS)
Definition: btree_float4.c:131
static bool gbt_float4ge(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_float4.c:35
@ gbt_t_float4
Definition: btree_gist.h:20
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)
#define GET_FLOAT_DISTANCE(t, arg1, arg2)
char GBT_NUMKEY
double float8
Definition: c.h:636
#define unlikely(x)
Definition: c.h:403
float float4
Definition: c.h:635
pg_noinline void float_overflow_error(void)
Definition: float.c:86
int float4_cmp_internal(float4 a, float4 b)
Definition: float.c:816
#define PG_RETURN_VOID()
Definition: fmgr.h:349
#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_GETARG_FLOAT4(n)
Definition: fmgr.h:281
#define PG_RETURN_POINTER(x)
Definition: fmgr.h:361
#define PG_RETURN_FLOAT4(x)
Definition: fmgr.h:366
#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
float4 upper
Definition: btree_float4.c:15
float4 lower
Definition: btree_float4.c:14