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btree_float8.c File Reference

#include "postgres.h"
#include "btree_gist.h"
#include "btree_utils_num.h"
Include dependency graph for btree_float8.c:

Go to the source code of this file.

Data Structures

struct  float8key

Typedefs

typedef struct float8key float8KEY

Functions

 PG_FUNCTION_INFO_V1 (gbt_float8_compress)
 PG_FUNCTION_INFO_V1 (gbt_float8_union)
 PG_FUNCTION_INFO_V1 (gbt_float8_picksplit)
 PG_FUNCTION_INFO_V1 (gbt_float8_consistent)
 PG_FUNCTION_INFO_V1 (gbt_float8_distance)
 PG_FUNCTION_INFO_V1 (gbt_float8_penalty)
 PG_FUNCTION_INFO_V1 (gbt_float8_same)
Datum gbt_float8_compress (PG_FUNCTION_ARGS)
Datum gbt_float8_union (PG_FUNCTION_ARGS)
Datum gbt_float8_picksplit (PG_FUNCTION_ARGS)
Datum gbt_float8_consistent (PG_FUNCTION_ARGS)
Datum gbt_float8_distance (PG_FUNCTION_ARGS)
Datum gbt_float8_penalty (PG_FUNCTION_ARGS)
Datum gbt_float8_same (PG_FUNCTION_ARGS)
static bool gbt_float8gt (const void *a, const void *b)
static bool gbt_float8ge (const void *a, const void *b)
static bool gbt_float8eq (const void *a, const void *b)
static bool gbt_float8le (const void *a, const void *b)
static bool gbt_float8lt (const void *a, const void *b)
static int gbt_float8key_cmp (const void *a, const void *b)
static float8 gbt_float8_dist (const void *a, const void *b)
 PG_FUNCTION_INFO_V1 (float8_dist)
Datum float8_dist (PG_FUNCTION_ARGS)

Variables

static const gbtree_ninfo tinfo

Typedef Documentation

typedef struct float8key float8KEY

Function Documentation

Datum float8_dist ( PG_FUNCTION_ARGS   ) 

Definition at line 109 of file btree_float8.c.

References Abs, CHECKFLOATVAL, isinf(), PG_GETARG_FLOAT8, and PG_RETURN_FLOAT8.

{
    float8      a = PG_GETARG_FLOAT8(0);
    float8      b = PG_GETARG_FLOAT8(1);
    float8      r;

    r = a - b;
    CHECKFLOATVAL(r, isinf(a) || isinf(b), true);

    PG_RETURN_FLOAT8(Abs(r));
}

Datum gbt_float8_compress ( PG_FUNCTION_ARGS   ) 

Definition at line 127 of file btree_float8.c.

References gbt_num_compress(), PG_GETARG_POINTER, and PG_RETURN_POINTER.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    GISTENTRY  *retval = NULL;

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

Datum gbt_float8_consistent ( PG_FUNCTION_ARGS   ) 

Definition at line 137 of file btree_float8.c.

References DatumGetPointer, gbt_num_consistent(), GIST_LEAF, GISTENTRY::key, float8key::lower, GBT_NUMKEY_R::lower, PG_GETARG_FLOAT8, PG_GETARG_POINTER, PG_GETARG_UINT16, PG_RETURN_BOOL, float8key::upper, and GBT_NUMKEY_R::upper.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    float8      query = PG_GETARG_FLOAT8(1);
    StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);

    /* Oid      subtype = PG_GETARG_OID(3); */
    bool       *recheck = (bool *) PG_GETARG_POINTER(4);
    float8KEY  *kkk = (float8KEY *) 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)
        );
}

static float8 gbt_float8_dist ( const void *  a,
const void *  b 
) [static]

Definition at line 79 of file btree_float8.c.

References Abs, CHECKFLOATVAL, and isinf().

{
    float8      arg1 = *(const float8 *) a;
    float8      arg2 = *(const float8 *) b;
    float8      r;

    r = arg1 - arg2;
    CHECKFLOATVAL(r, isinf(arg1) || isinf(arg2), true);

    return Abs(r);
}

Datum gbt_float8_distance ( PG_FUNCTION_ARGS   ) 
Datum gbt_float8_penalty ( PG_FUNCTION_ARGS   ) 

Definition at line 191 of file btree_float8.c.

References DatumGetPointer, float8key::lower, penalty_num, PG_GETARG_POINTER, PG_RETURN_POINTER, and float8key::upper.

{
    float8KEY  *origentry = (float8KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
    float8KEY  *newentry = (float8KEY *) 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_float8_picksplit ( PG_FUNCTION_ARGS   ) 
Datum gbt_float8_same ( PG_FUNCTION_ARGS   ) 

Definition at line 214 of file btree_float8.c.

References gbt_num_same(), PG_GETARG_POINTER, and PG_RETURN_POINTER.

{
    float8KEY  *b1 = (float8KEY *) PG_GETARG_POINTER(0);
    float8KEY  *b2 = (float8KEY *) PG_GETARG_POINTER(1);
    bool       *result = (bool *) PG_GETARG_POINTER(2);

    *result = gbt_num_same((void *) b1, (void *) b2, &tinfo);
    PG_RETURN_POINTER(result);
}

Datum gbt_float8_union ( PG_FUNCTION_ARGS   ) 

Definition at line 180 of file btree_float8.c.

References gbt_num_union(), palloc(), PG_GETARG_POINTER, and PG_RETURN_POINTER.

{
    GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
    void       *out = palloc(sizeof(float8KEY));

    *(int *) PG_GETARG_POINTER(1) = sizeof(float8KEY);
    PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo));
}

static bool gbt_float8eq ( const void *  a,
const void *  b 
) [static]

Definition at line 46 of file btree_float8.c.

{
    return (*((const float8 *) a) == *((const float8 *) b));
}

static bool gbt_float8ge ( const void *  a,
const void *  b 
) [static]

Definition at line 41 of file btree_float8.c.

{
    return (*((const float8 *) a) >= *((const float8 *) b));
}

static bool gbt_float8gt ( const void *  a,
const void *  b 
) [static]

Definition at line 36 of file btree_float8.c.

{
    return (*((const float8 *) a) > *((const float8 *) b));
}

static int gbt_float8key_cmp ( const void *  a,
const void *  b 
) [static]

Definition at line 62 of file btree_float8.c.

References float8key::lower, and float8key::upper.

{
    float8KEY  *ia = (float8KEY *) (((const Nsrt *) a)->t);
    float8KEY  *ib = (float8KEY *) (((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 bool gbt_float8le ( const void *  a,
const void *  b 
) [static]

Definition at line 51 of file btree_float8.c.

{
    return (*((const float8 *) a) <= *((const float8 *) b));
}

static bool gbt_float8lt ( const void *  a,
const void *  b 
) [static]

Definition at line 56 of file btree_float8.c.

{
    return (*((const float8 *) a) < *((const float8 *) b));
}

PG_FUNCTION_INFO_V1 ( gbt_float8_compress   ) 
PG_FUNCTION_INFO_V1 ( gbt_float8_consistent   ) 
PG_FUNCTION_INFO_V1 ( gbt_float8_picksplit   ) 
PG_FUNCTION_INFO_V1 ( gbt_float8_distance   ) 
PG_FUNCTION_INFO_V1 ( gbt_float8_same   ) 
PG_FUNCTION_INFO_V1 ( gbt_float8_penalty   ) 
PG_FUNCTION_INFO_V1 ( gbt_float8_union   ) 
PG_FUNCTION_INFO_V1 ( float8_dist   ) 

Variable Documentation

const gbtree_ninfo tinfo [static]
Initial value:

Definition at line 92 of file btree_float8.c.