btree_float8.c File Reference

#include "postgres.h"
#include "btree_gist.h"
#include "btree_utils_num.h"
#include "utils/float.h"
#include "utils/rel.h"
#include "utils/sortsupport.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_fetch)
	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)
	PG_FUNCTION_INFO_V1 (gbt_float8_sortsupport)
static bool	gbt_float8gt (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_float8ge (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_float8eq (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_float8le (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_float8lt (const void *a, const void *b, FmgrInfo *flinfo)
static int	gbt_float8key_cmp (const void *a, const void *b, FmgrInfo *flinfo)
static float8	gbt_float8_dist (const void *a, const void *b, FmgrInfo *flinfo)
	PG_FUNCTION_INFO_V1 (float8_dist)
Datum	float8_dist (PG_FUNCTION_ARGS)
Datum	gbt_float8_compress (PG_FUNCTION_ARGS)
Datum	gbt_float8_fetch (PG_FUNCTION_ARGS)
Datum	gbt_float8_consistent (PG_FUNCTION_ARGS)
Datum	gbt_float8_distance (PG_FUNCTION_ARGS)
Datum	gbt_float8_union (PG_FUNCTION_ARGS)
Datum	gbt_float8_penalty (PG_FUNCTION_ARGS)
Datum	gbt_float8_picksplit (PG_FUNCTION_ARGS)
Datum	gbt_float8_same (PG_FUNCTION_ARGS)
static int	gbt_float8_ssup_cmp (Datum x, Datum y, SortSupport ssup)
Datum	gbt_float8_sortsupport (PG_FUNCTION_ARGS)

Variables
static const gbtree_ninfo	tinfo

Typedef Documentation

float8KEY

typedef struct float8key float8KEY

Function Documentation

float8_dist()

Datum float8_dist

(

PG_FUNCTION_ARGS

)

Definition at line 115 of file btree_float8.c.

{
    float8      a = PG_GETARG_FLOAT8(0);
    float8      b = PG_GETARG_FLOAT8(1);
    float8      r;
 
    r = a - b;
    if (unlikely(isinf(r)) && !isinf(a) && !isinf(b))
        float_overflow_error();
    if (unlikely(isnan(r)))
    {
        if (isnan(a) && isnan(b))
            r = 0.0;            /* treat NaNs as equal */
        else if (isnan(a) || isnan(b))
            r = get_float8_infinity();  /* max dist for NaN vs non-NaN */
        else
            r = 0.0;            /* must be Inf - Inf case */
    }
    PG_RETURN_FLOAT8(fabs(r));
}

References a, b, fb(), float_overflow_error(), get_float8_infinity(), PG_GETARG_FLOAT8, PG_RETURN_FLOAT8, and unlikely.

gbt_float8_compress()

Datum gbt_float8_compress

(

PG_FUNCTION_ARGS

)

Definition at line 142 of file btree_float8.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
 
    PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
}

References gbt_num_compress(), PG_GETARG_POINTER, PG_RETURN_POINTER, and tinfo.

gbt_float8_consistent()

Datum gbt_float8_consistent

(

PG_FUNCTION_ARGS

)

Definition at line 158 of file btree_float8.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    float8      query = PG_GETARG_FLOAT8(1);
    StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
#ifdef NOT_USED
    Oid         subtype = PG_GETARG_OID(3);
#endif
    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, &query, strategy,
                                      GIST_LEAF(entry), &tinfo,
                                      fcinfo->flinfo));
}

References DatumGetPointer(), fb(), gbt_num_consistent(), GIST_LEAF, GISTENTRY::key, PG_GETARG_FLOAT8, PG_GETARG_OID, PG_GETARG_POINTER, PG_GETARG_UINT16, PG_RETURN_BOOL, and tinfo.

gbt_float8_dist()

static float8 gbt_float8_dist ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 76 of file btree_float8.c.

{
    float8      arg1 = *(const float8 *) a;
    float8      arg2 = *(const float8 *) b;
    float8      r;
 
    r = arg1 - arg2;
    if (unlikely(isinf(r)) && !isinf(arg1) && !isinf(arg2))
        float_overflow_error();
    if (unlikely(isnan(r)))
    {
        if (isnan(arg1) && isnan(arg2))
            r = 0.0;            /* treat NaNs as equal */
        else if (isnan(arg1) || isnan(arg2))
            r = get_float8_infinity();  /* max dist for NaN vs non-NaN */
        else
            r = 0.0;            /* must be Inf - Inf case */
    }
    return fabs(r);
}

References a, b, fb(), float_overflow_error(), get_float8_infinity(), and unlikely.

gbt_float8_distance()

Datum gbt_float8_distance

(

PG_FUNCTION_ARGS

)

Definition at line 182 of file btree_float8.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    float8      query = PG_GETARG_FLOAT8(1);
#ifdef NOT_USED
    Oid         subtype = PG_GETARG_OID(3);
#endif
    float8KEY  *kkk = (float8KEY *) DatumGetPointer(entry->key);
    GBT_NUMKEY_R key;
 
    key.lower = (GBT_NUMKEY *) &kkk->lower;
    key.upper = (GBT_NUMKEY *) &kkk->upper;
 
    PG_RETURN_FLOAT8(gbt_num_distance(&key, &query, GIST_LEAF(entry),
                                      &tinfo, fcinfo->flinfo));
}

References DatumGetPointer(), fb(), gbt_num_distance(), GIST_LEAF, GISTENTRY::key, PG_GETARG_FLOAT8, PG_GETARG_OID, PG_GETARG_POINTER, PG_RETURN_FLOAT8, and tinfo.

gbt_float8_fetch()

Datum gbt_float8_fetch

(

PG_FUNCTION_ARGS

)

Definition at line 150 of file btree_float8.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
 
    PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
}

References gbt_num_fetch(), PG_GETARG_POINTER, PG_RETURN_POINTER, and tinfo.

gbt_float8_penalty()

Datum gbt_float8_penalty

(

PG_FUNCTION_ARGS

)

Definition at line 210 of file btree_float8.c.

{
    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);
 
    float_penalty_num(result, origentry->lower, origentry->upper, newentry->lower, newentry->upper);
 
    PG_RETURN_POINTER(result);
}

References DatumGetPointer(), fb(), float_penalty_num, PG_GETARG_POINTER, PG_RETURN_POINTER, and result.

gbt_float8_picksplit()

Datum gbt_float8_picksplit

(

PG_FUNCTION_ARGS

)

Definition at line 222 of file btree_float8.c.

{
    PG_RETURN_POINTER(gbt_num_picksplit((GistEntryVector *) PG_GETARG_POINTER(0),
                                        (GIST_SPLITVEC *) PG_GETARG_POINTER(1),
                                        &tinfo, fcinfo->flinfo));
}

References gbt_num_picksplit(), PG_GETARG_POINTER, PG_RETURN_POINTER, and tinfo.

gbt_float8_same()

Datum gbt_float8_same

(

PG_FUNCTION_ARGS

)

Definition at line 230 of file btree_float8.c.

{
    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, fcinfo->flinfo);
    PG_RETURN_POINTER(result);
}

References fb(), gbt_num_same(), PG_GETARG_POINTER, PG_RETURN_POINTER, result, and tinfo.

gbt_float8_sortsupport()

Datum gbt_float8_sortsupport

(

PG_FUNCTION_ARGS

)

Definition at line 251 of file btree_float8.c.

{
    SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);
 
    ssup->comparator = gbt_float8_ssup_cmp;
    ssup->ssup_extra = NULL;
 
    PG_RETURN_VOID();
}

References SortSupportData::comparator, fb(), gbt_float8_ssup_cmp(), PG_GETARG_POINTER, PG_RETURN_VOID, and SortSupportData::ssup_extra.

gbt_float8_ssup_cmp()

static int gbt_float8_ssup_cmp ( Datum  x, Datum  y, SortSupport  ssup  )

static

Definition at line 241 of file btree_float8.c.

{
    float8KEY  *arg1 = (float8KEY *) DatumGetPointer(x);
    float8KEY  *arg2 = (float8KEY *) DatumGetPointer(y);
 
    /* for leaf items we expect lower == upper, so only compare lower */
    return float8_cmp_internal(arg1->lower, arg2->lower);
}

References DatumGetPointer(), fb(), float8_cmp_internal(), x, and y.

Referenced by gbt_float8_sortsupport().

gbt_float8_union()

Datum gbt_float8_union

(

PG_FUNCTION_ARGS

)

Definition at line 200 of file btree_float8.c.

{
    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(out, entryvec, &tinfo, fcinfo->flinfo));
}

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

gbt_float8eq()

static bool gbt_float8eq ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 47 of file btree_float8.c.

{
    return float8_eq(*((const float8 *) a), *((const float8 *) b));
}

References a, b, and float8_eq().

gbt_float8ge()

static bool gbt_float8ge ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 42 of file btree_float8.c.

{
    return float8_ge(*((const float8 *) a), *((const float8 *) b));
}

References a, b, and float8_ge().

gbt_float8gt()

static bool gbt_float8gt ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 37 of file btree_float8.c.

{
    return float8_gt(*((const float8 *) a), *((const float8 *) b));
}

References a, b, and float8_gt().

gbt_float8key_cmp()

static int gbt_float8key_cmp ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 63 of file btree_float8.c.

{
    float8KEY  *ia = (float8KEY *) (((const Nsrt *) a)->t);
    float8KEY  *ib = (float8KEY *) (((const Nsrt *) b)->t);
    int         res;
 
    res = float8_cmp_internal(ia->lower, ib->lower);
    if (res != 0)
        return res;
    return float8_cmp_internal(ia->upper, ib->upper);
}

References a, b, fb(), and float8_cmp_internal().

gbt_float8le()

static bool gbt_float8le ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 52 of file btree_float8.c.

{
    return float8_le(*((const float8 *) a), *((const float8 *) b));
}

References a, b, and float8_le().

gbt_float8lt()

static bool gbt_float8lt ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 57 of file btree_float8.c.

{
    return float8_lt(*((const float8 *) a), *((const float8 *) b));
}

References a, b, and float8_lt().

PG_FUNCTION_INFO_V1() [1/10]

PG_FUNCTION_INFO_V1

(

float8_dist

)

PG_FUNCTION_INFO_V1() [2/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_compress

)

PG_FUNCTION_INFO_V1() [3/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_consistent

)

PG_FUNCTION_INFO_V1() [4/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_distance

)

PG_FUNCTION_INFO_V1() [5/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_fetch

)

PG_FUNCTION_INFO_V1() [6/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_penalty

)

PG_FUNCTION_INFO_V1() [7/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_picksplit

)

PG_FUNCTION_INFO_V1() [8/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_same

)

PG_FUNCTION_INFO_V1() [9/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_sortsupport

)

PG_FUNCTION_INFO_V1() [10/10]

PG_FUNCTION_INFO_V1

(

gbt_float8_union

)

Variable Documentation

tinfo

const gbtree_ninfo tinfo

static

Initial value:

=
{
    gbt_t_float8,
    sizeof(float8),
    16,                         
    gbt_float8gt,
    gbt_float8ge,
    gbt_float8eq,
    gbt_float8le,
    gbt_float8lt,
    gbt_float8key_cmp,
    gbt_float8_dist
}

Definition at line 98 of file btree_float8.c.

{
    gbt_t_float8,
    sizeof(float8),
    16,                         /* sizeof(gbtreekey16) */
    gbt_float8gt,
    gbt_float8ge,
    gbt_float8eq,
    gbt_float8le,
    gbt_float8lt,
    gbt_float8key_cmp,
    gbt_float8_dist
};

Referenced by gbt_float8_compress(), gbt_float8_consistent(), gbt_float8_distance(), gbt_float8_fetch(), gbt_float8_picksplit(), gbt_float8_same(), and gbt_float8_union().