btree_float4.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_float4.c:

Go to the source code of this file.

Data Structures
struct	float4key

Typedefs
typedef struct float4key	float4KEY

Functions
	PG_FUNCTION_INFO_V1 (gbt_float4_compress)
	PG_FUNCTION_INFO_V1 (gbt_float4_fetch)
	PG_FUNCTION_INFO_V1 (gbt_float4_union)
	PG_FUNCTION_INFO_V1 (gbt_float4_picksplit)
	PG_FUNCTION_INFO_V1 (gbt_float4_consistent)
	PG_FUNCTION_INFO_V1 (gbt_float4_distance)
	PG_FUNCTION_INFO_V1 (gbt_float4_penalty)
	PG_FUNCTION_INFO_V1 (gbt_float4_same)
	PG_FUNCTION_INFO_V1 (gbt_float4_sortsupport)
static bool	gbt_float4gt (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_float4ge (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_float4eq (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_float4le (const void *a, const void *b, FmgrInfo *flinfo)
static bool	gbt_float4lt (const void *a, const void *b, FmgrInfo *flinfo)
static int	gbt_float4key_cmp (const void *a, const void *b, FmgrInfo *flinfo)
static float8	gbt_float4_dist (const void *a, const void *b, FmgrInfo *flinfo)
	PG_FUNCTION_INFO_V1 (float4_dist)
Datum	float4_dist (PG_FUNCTION_ARGS)
Datum	gbt_float4_compress (PG_FUNCTION_ARGS)
Datum	gbt_float4_fetch (PG_FUNCTION_ARGS)
Datum	gbt_float4_consistent (PG_FUNCTION_ARGS)
Datum	gbt_float4_distance (PG_FUNCTION_ARGS)
Datum	gbt_float4_union (PG_FUNCTION_ARGS)
Datum	gbt_float4_penalty (PG_FUNCTION_ARGS)
Datum	gbt_float4_picksplit (PG_FUNCTION_ARGS)
Datum	gbt_float4_same (PG_FUNCTION_ARGS)
static int	gbt_float4_ssup_cmp (Datum x, Datum y, SortSupport ssup)
Datum	gbt_float4_sortsupport (PG_FUNCTION_ARGS)

Variables
static const gbtree_ninfo	tinfo

Typedef Documentation

float4KEY

typedef struct float4key float4KEY

Function Documentation

float4_dist()

Datum float4_dist

(

PG_FUNCTION_ARGS

)

Definition at line 113 of file btree_float4.c.

{
    float4      a = PG_GETARG_FLOAT4(0);
    float4      b = PG_GETARG_FLOAT4(1);
    float4      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_float4_infinity();  /* max dist for NaN vs non-NaN */
        else
            r = 0.0;            /* must be Inf - Inf case */
    }
    PG_RETURN_FLOAT4(fabsf(r));
}

References a, b, fb(), float_overflow_error(), get_float4_infinity(), PG_GETARG_FLOAT4, PG_RETURN_FLOAT4, and unlikely.

gbt_float4_compress()

Datum gbt_float4_compress

(

PG_FUNCTION_ARGS

)

Definition at line 140 of file btree_float4.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_float4_consistent()

Datum gbt_float4_consistent

(

PG_FUNCTION_ARGS

)

Definition at line 156 of file btree_float4.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    float4      query = PG_GETARG_FLOAT4(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);
    float4KEY  *kkk = (float4KEY *) 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_FLOAT4, PG_GETARG_OID, PG_GETARG_POINTER, PG_GETARG_UINT16, PG_RETURN_BOOL, and tinfo.

gbt_float4_dist()

static float8 gbt_float4_dist ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 75 of file btree_float4.c.

{
    float8      arg1 = *(const float4 *) a;
    float8      arg2 = *(const float4 *) b;
    float8      r;
 
    r = arg1 - arg2;
    /* needn't consider isinf case here, must be due to input infinity */
    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(), get_float8_infinity(), and unlikely.

gbt_float4_distance()

Datum gbt_float4_distance

(

PG_FUNCTION_ARGS

)

Definition at line 180 of file btree_float4.c.

{
    GISTENTRY  *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
    float4      query = PG_GETARG_FLOAT4(1);
#ifdef NOT_USED
    Oid         subtype = PG_GETARG_OID(3);
#endif
    float4KEY  *kkk = (float4KEY *) 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_FLOAT4, PG_GETARG_OID, PG_GETARG_POINTER, PG_RETURN_FLOAT8, and tinfo.

gbt_float4_fetch()

Datum gbt_float4_fetch

(

PG_FUNCTION_ARGS

)

Definition at line 148 of file btree_float4.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_float4_penalty()

Datum gbt_float4_penalty

(

PG_FUNCTION_ARGS

)

Definition at line 208 of file btree_float4.c.

{
    float4KEY  *origentry = (float4KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
    float4KEY  *newentry = (float4KEY *) 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_float4_picksplit()

Datum gbt_float4_picksplit

(

PG_FUNCTION_ARGS

)

Definition at line 220 of file btree_float4.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_float4_same()

Datum gbt_float4_same

(

PG_FUNCTION_ARGS

)

Definition at line 228 of file btree_float4.c.

{
    float4KEY  *b1 = (float4KEY *) PG_GETARG_POINTER(0);
    float4KEY  *b2 = (float4KEY *) 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_float4_sortsupport()

Datum gbt_float4_sortsupport

(

PG_FUNCTION_ARGS

)

Definition at line 249 of file btree_float4.c.

{
    SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);
 
    ssup->comparator = gbt_float4_ssup_cmp;
    ssup->ssup_extra = NULL;
 
    PG_RETURN_VOID();
}

References SortSupportData::comparator, fb(), gbt_float4_ssup_cmp(), PG_GETARG_POINTER, PG_RETURN_VOID, and SortSupportData::ssup_extra.

gbt_float4_ssup_cmp()

static int gbt_float4_ssup_cmp ( Datum  x, Datum  y, SortSupport  ssup  )

static

Definition at line 239 of file btree_float4.c.

{
    float4KEY  *arg1 = (float4KEY *) DatumGetPointer(x);
    float4KEY  *arg2 = (float4KEY *) DatumGetPointer(y);
 
    /* for leaf items we expect lower == upper, so only compare lower */
    return float4_cmp_internal(arg1->lower, arg2->lower);
}

References DatumGetPointer(), fb(), float4_cmp_internal(), x, and y.

Referenced by gbt_float4_sortsupport().

gbt_float4_union()

Datum gbt_float4_union

(

PG_FUNCTION_ARGS

)

Definition at line 198 of file btree_float4.c.

{
    GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
    void       *out = palloc(sizeof(float4KEY));
 
    *(int *) PG_GETARG_POINTER(1) = sizeof(float4KEY);
    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_float4eq()

static bool gbt_float4eq ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 46 of file btree_float4.c.

{
    return float4_eq(*((const float4 *) a), *((const float4 *) b));
}

References a, b, and float4_eq().

gbt_float4ge()

static bool gbt_float4ge ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 41 of file btree_float4.c.

{
    return float4_ge(*((const float4 *) a), *((const float4 *) b));
}

References a, b, and float4_ge().

gbt_float4gt()

static bool gbt_float4gt ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 36 of file btree_float4.c.

{
    return float4_gt(*((const float4 *) a), *((const float4 *) b));
}

References a, b, and float4_gt().

gbt_float4key_cmp()

static int gbt_float4key_cmp ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 62 of file btree_float4.c.

{
    float4KEY  *ia = (float4KEY *) (((const Nsrt *) a)->t);
    float4KEY  *ib = (float4KEY *) (((const Nsrt *) b)->t);
    int         res;
 
    res = float4_cmp_internal(ia->lower, ib->lower);
    if (res != 0)
        return res;
    return float4_cmp_internal(ia->upper, ib->upper);
}

References a, b, fb(), and float4_cmp_internal().

gbt_float4le()

static bool gbt_float4le ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 51 of file btree_float4.c.

{
    return float4_le(*((const float4 *) a), *((const float4 *) b));
}

References a, b, and float4_le().

gbt_float4lt()

static bool gbt_float4lt ( const void *  a, const void *  b, FmgrInfo *  flinfo  )

static

Definition at line 56 of file btree_float4.c.

{
    return float4_lt(*((const float4 *) a), *((const float4 *) b));
}

References a, b, and float4_lt().

PG_FUNCTION_INFO_V1() [1/10]

PG_FUNCTION_INFO_V1

(

float4_dist

)

PG_FUNCTION_INFO_V1() [2/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_compress

)

PG_FUNCTION_INFO_V1() [3/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_consistent

)

PG_FUNCTION_INFO_V1() [4/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_distance

)

PG_FUNCTION_INFO_V1() [5/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_fetch

)

PG_FUNCTION_INFO_V1() [6/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_penalty

)

PG_FUNCTION_INFO_V1() [7/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_picksplit

)

PG_FUNCTION_INFO_V1() [8/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_same

)

PG_FUNCTION_INFO_V1() [9/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_sortsupport

)

PG_FUNCTION_INFO_V1() [10/10]

PG_FUNCTION_INFO_V1

(

gbt_float4_union

)

Variable Documentation

tinfo

const gbtree_ninfo tinfo

static

Initial value:

=
{
    gbt_t_float4,
    sizeof(float4),
    8,                          
    gbt_float4gt,
    gbt_float4ge,
    gbt_float4eq,
    gbt_float4le,
    gbt_float4lt,
    gbt_float4key_cmp,
    gbt_float4_dist
}

Definition at line 96 of file btree_float4.c.

{
    gbt_t_float4,
    sizeof(float4),
    8,                          /* sizeof(gbtreekey8) */
    gbt_float4gt,
    gbt_float4ge,
    gbt_float4eq,
    gbt_float4le,
    gbt_float4lt,
    gbt_float4key_cmp,
    gbt_float4_dist
};

Referenced by gbt_float4_compress(), gbt_float4_consistent(), gbt_float4_distance(), gbt_float4_fetch(), gbt_float4_picksplit(), gbt_float4_same(), and gbt_float4_union().