Header And Logo

PostgreSQL
| The world's most advanced open source database.

Functions | Variables

btree_numeric.c File Reference

#include "postgres.h"
#include "btree_gist.h"
#include <math.h>
#include <float.h>
#include "btree_utils_var.h"
#include "utils/builtins.h"
#include "utils/numeric.h"
#include "utils/rel.h"
Include dependency graph for btree_numeric.c:

Go to the source code of this file.

Functions

 PG_FUNCTION_INFO_V1 (gbt_numeric_compress)
 PG_FUNCTION_INFO_V1 (gbt_numeric_union)
 PG_FUNCTION_INFO_V1 (gbt_numeric_picksplit)
 PG_FUNCTION_INFO_V1 (gbt_numeric_consistent)
 PG_FUNCTION_INFO_V1 (gbt_numeric_penalty)
 PG_FUNCTION_INFO_V1 (gbt_numeric_same)
Datum gbt_numeric_compress (PG_FUNCTION_ARGS)
Datum gbt_numeric_union (PG_FUNCTION_ARGS)
Datum gbt_numeric_picksplit (PG_FUNCTION_ARGS)
Datum gbt_numeric_consistent (PG_FUNCTION_ARGS)
Datum gbt_numeric_penalty (PG_FUNCTION_ARGS)
Datum gbt_numeric_same (PG_FUNCTION_ARGS)
static bool gbt_numeric_gt (const void *a, const void *b, Oid collation)
static bool gbt_numeric_ge (const void *a, const void *b, Oid collation)
static bool gbt_numeric_eq (const void *a, const void *b, Oid collation)
static bool gbt_numeric_le (const void *a, const void *b, Oid collation)
static bool gbt_numeric_lt (const void *a, const void *b, Oid collation)
static int32 gbt_numeric_cmp (const void *a, const void *b, Oid collation)

Variables

static const gbtree_vinfo tinfo

Function Documentation

static int32 gbt_numeric_cmp ( const void *  a,
const void *  b,
Oid  collation 
) [static]
Datum gbt_numeric_compress ( PG_FUNCTION_ARGS   ) 
Datum gbt_numeric_consistent ( PG_FUNCTION_ARGS   ) 

Definition at line 116 of file btree_numeric.c.

References DatumGetNumeric, DatumGetPointer, gbt_var_consistent(), gbt_var_key_readable(), GIST_LEAF, GISTENTRY::key, PG_GET_COLLATION, PG_GETARG_DATUM, PG_GETARG_POINTER, PG_GETARG_UINT16, and PG_RETURN_BOOL.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    void       *query = (void *) DatumGetNumeric(PG_GETARG_DATUM(1));
    StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);

    /* Oid      subtype = PG_GETARG_OID(3); */
    bool       *recheck = (bool *) PG_GETARG_POINTER(4);
    bool        retval;
    GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer(entry->key);
    GBT_VARKEY_R r = gbt_var_key_readable(key);

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

    retval = gbt_var_consistent(&r, query, strategy, PG_GET_COLLATION(),
                                GIST_LEAF(entry), &tinfo);
    PG_RETURN_BOOL(retval);
}

static bool gbt_numeric_eq ( const void *  a,
const void *  b,
Oid  collation 
) [static]
static bool gbt_numeric_ge ( const void *  a,
const void *  b,
Oid  collation 
) [static]
static bool gbt_numeric_gt ( const void *  a,
const void *  b,
Oid  collation 
) [static]
static bool gbt_numeric_le ( const void *  a,
const void *  b,
Oid  collation 
) [static]
static bool gbt_numeric_lt ( const void *  a,
const void *  b,
Oid  collation 
) [static]
Datum gbt_numeric_penalty ( PG_FUNCTION_ARGS   ) 

Definition at line 162 of file btree_numeric.c.

References DatumGetFloat8, DatumGetNumeric, DatumGetPointer, DirectFunctionCall1, DirectFunctionCall2, gbt_var_bin_union(), gbt_var_key_copy(), gbt_var_key_readable(), Int32GetDatum, int4_numeric(), GISTENTRY::key, GBT_VARKEY_R::lower, numeric_div(), numeric_float8_no_overflow(), numeric_gt(), numeric_is_nan(), numeric_sub(), NumericGetDatum, PG_GET_COLLATION, PG_GETARG_POINTER, PG_RETURN_POINTER, PointerGetDatum, TRUE, and GBT_VARKEY_R::upper.

{
    GISTENTRY  *o = (GISTENTRY *) PG_GETARG_POINTER(0);
    GISTENTRY  *n = (GISTENTRY *) PG_GETARG_POINTER(1);
    float      *result = (float *) PG_GETARG_POINTER(2);

    Numeric     us,
                os,
                ds;

    GBT_VARKEY *org = (GBT_VARKEY *) DatumGetPointer(o->key);
    GBT_VARKEY *newe = (GBT_VARKEY *) DatumGetPointer(n->key);
    Datum       uni;
    GBT_VARKEY_R rk,
                ok,
                uk;

    rk = gbt_var_key_readable(org);
    uni = PointerGetDatum(gbt_var_key_copy(&rk, TRUE));
    gbt_var_bin_union(&uni, newe, PG_GET_COLLATION(), &tinfo);
    ok = gbt_var_key_readable(org);
    uk = gbt_var_key_readable((GBT_VARKEY *) DatumGetPointer(uni));

    us = DatumGetNumeric(DirectFunctionCall2(
                                             numeric_sub,
                                             PointerGetDatum(uk.upper),
                                             PointerGetDatum(uk.lower)
                                             ));

    os = DatumGetNumeric(DirectFunctionCall2(
                                             numeric_sub,
                                             PointerGetDatum(ok.upper),
                                             PointerGetDatum(ok.lower)
                                             ));

    ds = DatumGetNumeric(DirectFunctionCall2(
                                             numeric_sub,
                                             NumericGetDatum(us),
                                             NumericGetDatum(os)
                                             ));

    if (numeric_is_nan(us))
    {
        if (numeric_is_nan(os))
            *result = 0.0;
        else
            *result = 1.0;
    }
    else
    {
        Numeric     nul = DatumGetNumeric(DirectFunctionCall1(int4_numeric, Int32GetDatum(0)));

        *result = 0.0;

        if (DirectFunctionCall2(numeric_gt, NumericGetDatum(ds), NumericGetDatum(nul)))
        {
            *result += FLT_MIN;
            os = DatumGetNumeric(DirectFunctionCall2(
                                                     numeric_div,
                                                     NumericGetDatum(ds),
                                                     NumericGetDatum(us)
                                                     ));
            *result += (float4) DatumGetFloat8(DirectFunctionCall1(numeric_float8_no_overflow, NumericGetDatum(os)));
        }
    }

    if (*result > 0)
        *result *= (FLT_MAX / (((GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1));

    PG_RETURN_POINTER(result);
}

Datum gbt_numeric_picksplit ( PG_FUNCTION_ARGS   ) 
Datum gbt_numeric_same ( PG_FUNCTION_ARGS   ) 

Definition at line 150 of file btree_numeric.c.

References gbt_var_same(), PG_GET_COLLATION, PG_GETARG_DATUM, PG_GETARG_POINTER, and PG_RETURN_POINTER.

{
    Datum       d1 = PG_GETARG_DATUM(0);
    Datum       d2 = PG_GETARG_DATUM(1);
    bool       *result = (bool *) PG_GETARG_POINTER(2);

    *result = gbt_var_same(d1, d2, PG_GET_COLLATION(), &tinfo);
    PG_RETURN_POINTER(result);
}

Datum gbt_numeric_union ( PG_FUNCTION_ARGS   ) 
PG_FUNCTION_INFO_V1 ( gbt_numeric_consistent   ) 
PG_FUNCTION_INFO_V1 ( gbt_numeric_picksplit   ) 
PG_FUNCTION_INFO_V1 ( gbt_numeric_same   ) 
PG_FUNCTION_INFO_V1 ( gbt_numeric_penalty   ) 
PG_FUNCTION_INFO_V1 ( gbt_numeric_union   ) 
PG_FUNCTION_INFO_V1 ( gbt_numeric_compress   ) 

Variable Documentation

const gbtree_vinfo tinfo [static]
Initial value:
{
    gbt_t_numeric,
    0,
    FALSE,
    gbt_numeric_gt,
    gbt_numeric_ge,
    gbt_numeric_eq,
    gbt_numeric_le,
    gbt_numeric_lt,
    gbt_numeric_cmp,
    NULL
}

Definition at line 85 of file btree_numeric.c.