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btree_int2.c
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1 /*
2  * contrib/btree_gist/btree_int2.c
3  */
4 #include "postgres.h"
5 
6 #include "btree_gist.h"
7 #include "btree_utils_num.h"
8 
9 typedef struct int16key
10 {
13 } int16KEY;
14 
15 /*
16 ** int16 ops
17 */
26 
27 static bool
28 gbt_int2gt(const void *a, const void *b, FmgrInfo *flinfo)
29 {
30  return (*((const int16 *) a) > *((const int16 *) b));
31 }
32 static bool
33 gbt_int2ge(const void *a, const void *b, FmgrInfo *flinfo)
34 {
35  return (*((const int16 *) a) >= *((const int16 *) b));
36 }
37 static bool
38 gbt_int2eq(const void *a, const void *b, FmgrInfo *flinfo)
39 {
40  return (*((const int16 *) a) == *((const int16 *) b));
41 }
42 static bool
43 gbt_int2le(const void *a, const void *b, FmgrInfo *flinfo)
44 {
45  return (*((const int16 *) a) <= *((const int16 *) b));
46 }
47 static bool
48 gbt_int2lt(const void *a, const void *b, FmgrInfo *flinfo)
49 {
50  return (*((const int16 *) a) < *((const int16 *) b));
51 }
52 
53 static int
54 gbt_int2key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
55 {
56  int16KEY *ia = (int16KEY *) (((const Nsrt *) a)->t);
57  int16KEY *ib = (int16KEY *) (((const Nsrt *) b)->t);
58 
59  if (ia->lower == ib->lower)
60  {
61  if (ia->upper == ib->upper)
62  return 0;
63 
64  return (ia->upper > ib->upper) ? 1 : -1;
65  }
66 
67  return (ia->lower > ib->lower) ? 1 : -1;
68 }
69 
70 static float8
71 gbt_int2_dist(const void *a, const void *b, FmgrInfo *flinfo)
72 {
73  return GET_FLOAT_DISTANCE(int16, a, b);
74 }
75 
76 
77 static const gbtree_ninfo tinfo =
78 {
79  gbt_t_int2,
80  sizeof(int16),
81  4, /* sizeof(gbtreekey4) */
82  gbt_int2gt,
83  gbt_int2ge,
84  gbt_int2eq,
85  gbt_int2le,
86  gbt_int2lt,
89 };
90 
91 
93 Datum
95 {
96  int16 a = PG_GETARG_INT16(0);
97  int16 b = PG_GETARG_INT16(1);
98  int16 r;
99  int16 ra;
100 
101  r = a - b;
102  ra = Abs(r);
103 
104  /* Overflow check. */
105  if (ra < 0 || (!SAMESIGN(a, b) && !SAMESIGN(r, a)))
106  ereport(ERROR,
107  (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
108  errmsg("smallint out of range")));
109 
110  PG_RETURN_INT16(ra);
111 }
112 
113 
114 /**************************************************
115  * int16 ops
116  **************************************************/
117 
118 
119 Datum
121 {
122  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
123 
124  PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
125 }
126 
127 Datum
129 {
130  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
131 
132  PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
133 }
134 
135 Datum
137 {
138  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
139  int16 query = PG_GETARG_INT16(1);
141 
142  /* Oid subtype = PG_GETARG_OID(3); */
143  bool *recheck = (bool *) PG_GETARG_POINTER(4);
144  int16KEY *kkk = (int16KEY *) DatumGetPointer(entry->key);
145  GBT_NUMKEY_R key;
146 
147  /* All cases served by this function are exact */
148  *recheck = false;
149 
150  key.lower = (GBT_NUMKEY *) &kkk->lower;
151  key.upper = (GBT_NUMKEY *) &kkk->upper;
152 
154  gbt_num_consistent(&key, (void *) &query, &strategy, GIST_LEAF(entry), &tinfo, fcinfo->flinfo)
155  );
156 }
157 
158 
159 Datum
161 {
162  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
163  int16 query = PG_GETARG_INT16(1);
164 
165  /* Oid subtype = PG_GETARG_OID(3); */
166  int16KEY *kkk = (int16KEY *) DatumGetPointer(entry->key);
167  GBT_NUMKEY_R key;
168 
169  key.lower = (GBT_NUMKEY *) &kkk->lower;
170  key.upper = (GBT_NUMKEY *) &kkk->upper;
171 
173  gbt_num_distance(&key, (void *) &query, GIST_LEAF(entry), &tinfo, fcinfo->flinfo)
174  );
175 }
176 
177 
178 Datum
180 {
182  void *out = palloc(sizeof(int16KEY));
183 
184  *(int *) PG_GETARG_POINTER(1) = sizeof(int16KEY);
185  PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo, fcinfo->flinfo));
186 }
187 
188 
189 Datum
191 {
192  int16KEY *origentry = (int16KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
193  int16KEY *newentry = (int16KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
194  float *result = (float *) PG_GETARG_POINTER(2);
195 
196  penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
197 
198  PG_RETURN_POINTER(result);
199 }
200 
201 Datum
203 {
207  &tinfo, fcinfo->flinfo
208  ));
209 }
210 
211 Datum
213 {
214  int16KEY *b1 = (int16KEY *) PG_GETARG_POINTER(0);
215  int16KEY *b2 = (int16KEY *) PG_GETARG_POINTER(1);
216  bool *result = (bool *) PG_GETARG_POINTER(2);
217 
218  *result = gbt_num_same((void *) b1, (void *) b2, &tinfo, fcinfo->flinfo);
219  PG_RETURN_POINTER(result);
220 }
#define GIST_LEAF(entry)
Definition: gist.h:133
signed short int16
Definition: c.h:255
#define PG_RETURN_POINTER(x)
Definition: fmgr.h:321
bool gbt_num_same(const GBT_NUMKEY *a, const GBT_NUMKEY *b, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
Definition: fmgr.h:56
const GBT_NUMKEY * lower
float8 gbt_num_distance(const GBT_NUMKEY_R *key, const void *query, bool is_leaf, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
static bool gbt_int2gt(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:28
GISTENTRY * gbt_num_fetch(GISTENTRY *entry, const gbtree_ninfo *tinfo)
static bool gbt_int2lt(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:48
#define PG_RETURN_FLOAT8(x)
Definition: fmgr.h:326
Datum gbt_int2_consistent(PG_FUNCTION_ARGS)
Definition: btree_int2.c:136
#define PG_RETURN_INT16(x)
Definition: fmgr.h:316
uint16 StrategyNumber
Definition: stratnum.h:22
int errcode(int sqlerrcode)
Definition: elog.c:575
return result
Definition: formatting.c:1618
const GBT_NUMKEY * upper
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:241
bool gbt_num_consistent(const GBT_NUMKEY_R *key, const void *query, const StrategyNumber *strategy, bool is_leaf, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
static bool gbt_int2le(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:43
static float8 gbt_int2_dist(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:71
Datum int2_dist(PG_FUNCTION_ARGS)
Definition: btree_int2.c:94
Datum gbt_int2_fetch(PG_FUNCTION_ARGS)
Definition: btree_int2.c:128
Datum gbt_int2_compress(PG_FUNCTION_ARGS)
Definition: btree_int2.c:120
static bool gbt_int2eq(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:38
#define Abs(x)
Definition: c.h:812
GISTENTRY * gbt_num_compress(GISTENTRY *entry, const gbtree_ninfo *tinfo)
Datum gbt_int2_same(PG_FUNCTION_ARGS)
Definition: btree_int2.c:212
#define ERROR
Definition: elog.h:43
double float8
Definition: c.h:381
#define penalty_num(result, olower, oupper, nlower, nupper)
static int gbt_int2key_cmp(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:54
Datum key
Definition: gist.h:123
char GBT_NUMKEY
static const gbtree_ninfo tinfo
Definition: btree_int2.c:77
#define ereport(elevel, rest)
Definition: elog.h:122
Datum gbt_int2_distance(PG_FUNCTION_ARGS)
Definition: btree_int2.c:160
#define SAMESIGN(a, b)
Datum gbt_int2_penalty(PG_FUNCTION_ARGS)
Definition: btree_int2.c:190
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:319
uintptr_t Datum
Definition: postgres.h:372
int16 upper
Definition: btree_int2.c:12
#define PG_GETARG_INT16(n)
Definition: fmgr.h:236
#define GET_FLOAT_DISTANCE(t, arg1, arg2)
Datum gbt_int2_union(PG_FUNCTION_ARGS)
Definition: btree_int2.c:179
GIST_SPLITVEC * gbt_num_picksplit(const GistEntryVector *entryvec, GIST_SPLITVEC *v, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)
int16 lower
Definition: btree_int2.c:11
#define PG_GETARG_UINT16(n)
Definition: fmgr.h:237
struct int16key int16KEY
#define DatumGetPointer(X)
Definition: postgres.h:555
void * palloc(Size size)
Definition: mcxt.c:849
int errmsg(const char *fmt,...)
Definition: elog.c:797
#define PG_FUNCTION_ARGS
Definition: fmgr.h:158
Datum gbt_int2_picksplit(PG_FUNCTION_ARGS)
Definition: btree_int2.c:202
PG_FUNCTION_INFO_V1(gbt_int2_compress)
static bool gbt_int2ge(const void *a, const void *b, FmgrInfo *flinfo)
Definition: btree_int2.c:33
void * gbt_num_union(GBT_NUMKEY *out, const GistEntryVector *entryvec, const gbtree_ninfo *tinfo, FmgrInfo *flinfo)