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nbtcompare.c File Reference

#include "postgres.h"
#include "utils/builtins.h"
#include "utils/sortsupport.h"
Include dependency graph for nbtcompare.c:

Go to the source code of this file.

Functions

Datum btboolcmp (PG_FUNCTION_ARGS)
Datum btint2cmp (PG_FUNCTION_ARGS)
static int btint2fastcmp (Datum x, Datum y, SortSupport ssup)
Datum btint2sortsupport (PG_FUNCTION_ARGS)
Datum btint4cmp (PG_FUNCTION_ARGS)
static int btint4fastcmp (Datum x, Datum y, SortSupport ssup)
Datum btint4sortsupport (PG_FUNCTION_ARGS)
Datum btint8cmp (PG_FUNCTION_ARGS)
static int btint8fastcmp (Datum x, Datum y, SortSupport ssup)
Datum btint8sortsupport (PG_FUNCTION_ARGS)
Datum btint48cmp (PG_FUNCTION_ARGS)
Datum btint84cmp (PG_FUNCTION_ARGS)
Datum btint24cmp (PG_FUNCTION_ARGS)
Datum btint42cmp (PG_FUNCTION_ARGS)
Datum btint28cmp (PG_FUNCTION_ARGS)
Datum btint82cmp (PG_FUNCTION_ARGS)
Datum btoidcmp (PG_FUNCTION_ARGS)
static int btoidfastcmp (Datum x, Datum y, SortSupport ssup)
Datum btoidsortsupport (PG_FUNCTION_ARGS)
Datum btoidvectorcmp (PG_FUNCTION_ARGS)
Datum btcharcmp (PG_FUNCTION_ARGS)
Datum btnamecmp (PG_FUNCTION_ARGS)
static int btnamefastcmp (Datum x, Datum y, SortSupport ssup)
Datum btnamesortsupport (PG_FUNCTION_ARGS)

Function Documentation

Datum btboolcmp ( PG_FUNCTION_ARGS   ) 

Definition at line 56 of file nbtcompare.c.

References PG_GETARG_BOOL, and PG_RETURN_INT32.

{
    bool        a = PG_GETARG_BOOL(0);
    bool        b = PG_GETARG_BOOL(1);

    PG_RETURN_INT32((int32) a - (int32) b);
}

Datum btcharcmp ( PG_FUNCTION_ARGS   ) 

Definition at line 311 of file nbtcompare.c.

References PG_GETARG_CHAR, and PG_RETURN_INT32.

{
    char        a = PG_GETARG_CHAR(0);
    char        b = PG_GETARG_CHAR(1);

    /* Be careful to compare chars as unsigned */
    PG_RETURN_INT32((int32) ((uint8) a) - (int32) ((uint8) b));
}

Datum btint24cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 194 of file nbtcompare.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int16       a = PG_GETARG_INT16(0);
    int32       b = PG_GETARG_INT32(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

Datum btint28cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 222 of file nbtcompare.c.

References PG_GETARG_INT16, PG_GETARG_INT64, and PG_RETURN_INT32.

{
    int16       a = PG_GETARG_INT16(0);
    int64       b = PG_GETARG_INT64(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

Datum btint2cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 65 of file nbtcompare.c.

References PG_GETARG_INT16, and PG_RETURN_INT32.

{
    int16       a = PG_GETARG_INT16(0);
    int16       b = PG_GETARG_INT16(1);

    PG_RETURN_INT32((int32) a - (int32) b);
}

static int btint2fastcmp ( Datum  x,
Datum  y,
SortSupport  ssup 
) [static]

Definition at line 74 of file nbtcompare.c.

References DatumGetInt16.

{
    int16       a = DatumGetInt16(x);
    int16       b = DatumGetInt16(y);

    return (int) a - (int) b;
}

Datum btint2sortsupport ( PG_FUNCTION_ARGS   ) 

Definition at line 83 of file nbtcompare.c.

References SortSupportData::comparator, PG_GETARG_POINTER, and PG_RETURN_VOID.

{
    SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);

    ssup->comparator = btint2fastcmp;
    PG_RETURN_VOID();
}

Datum btint42cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 208 of file nbtcompare.c.

References PG_GETARG_INT16, PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       a = PG_GETARG_INT32(0);
    int16       b = PG_GETARG_INT16(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

Datum btint48cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 166 of file nbtcompare.c.

References PG_GETARG_INT32, PG_GETARG_INT64, and PG_RETURN_INT32.

{
    int32       a = PG_GETARG_INT32(0);
    int64       b = PG_GETARG_INT64(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

Datum btint4cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 92 of file nbtcompare.c.

References PG_GETARG_INT32, and PG_RETURN_INT32.

{
    int32       a = PG_GETARG_INT32(0);
    int32       b = PG_GETARG_INT32(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

static int btint4fastcmp ( Datum  x,
Datum  y,
SortSupport  ssup 
) [static]

Definition at line 106 of file nbtcompare.c.

References DatumGetInt32.

{
    int32       a = DatumGetInt32(x);
    int32       b = DatumGetInt32(y);

    if (a > b)
        return 1;
    else if (a == b)
        return 0;
    else
        return -1;
}

Datum btint4sortsupport ( PG_FUNCTION_ARGS   ) 

Definition at line 120 of file nbtcompare.c.

References SortSupportData::comparator, PG_GETARG_POINTER, and PG_RETURN_VOID.

{
    SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);

    ssup->comparator = btint4fastcmp;
    PG_RETURN_VOID();
}

Datum btint82cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 236 of file nbtcompare.c.

References PG_GETARG_INT16, PG_GETARG_INT64, and PG_RETURN_INT32.

{
    int64       a = PG_GETARG_INT64(0);
    int16       b = PG_GETARG_INT16(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

Datum btint84cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 180 of file nbtcompare.c.

References PG_GETARG_INT32, PG_GETARG_INT64, and PG_RETURN_INT32.

{
    int64       a = PG_GETARG_INT64(0);
    int32       b = PG_GETARG_INT32(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

Datum btint8cmp ( PG_FUNCTION_ARGS   ) 

Definition at line 129 of file nbtcompare.c.

References PG_GETARG_INT64, and PG_RETURN_INT32.

{
    int64       a = PG_GETARG_INT64(0);
    int64       b = PG_GETARG_INT64(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

static int btint8fastcmp ( Datum  x,
Datum  y,
SortSupport  ssup 
) [static]

Definition at line 143 of file nbtcompare.c.

References DatumGetInt64.

{
    int64       a = DatumGetInt64(x);
    int64       b = DatumGetInt64(y);

    if (a > b)
        return 1;
    else if (a == b)
        return 0;
    else
        return -1;
}

Datum btint8sortsupport ( PG_FUNCTION_ARGS   ) 

Definition at line 157 of file nbtcompare.c.

References SortSupportData::comparator, PG_GETARG_POINTER, and PG_RETURN_VOID.

{
    SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);

    ssup->comparator = btint8fastcmp;
    PG_RETURN_VOID();
}

Datum btnamecmp ( PG_FUNCTION_ARGS   ) 

Definition at line 321 of file nbtcompare.c.

References NAMEDATALEN, NameStr, PG_GETARG_NAME, and PG_RETURN_INT32.

{
    Name        a = PG_GETARG_NAME(0);
    Name        b = PG_GETARG_NAME(1);

    PG_RETURN_INT32(strncmp(NameStr(*a), NameStr(*b), NAMEDATALEN));
}

static int btnamefastcmp ( Datum  x,
Datum  y,
SortSupport  ssup 
) [static]

Definition at line 330 of file nbtcompare.c.

References DatumGetName, NAMEDATALEN, and NameStr.

{
    Name        a = DatumGetName(x);
    Name        b = DatumGetName(y);

    return strncmp(NameStr(*a), NameStr(*b), NAMEDATALEN);
}

Datum btnamesortsupport ( PG_FUNCTION_ARGS   ) 

Definition at line 339 of file nbtcompare.c.

References SortSupportData::comparator, PG_GETARG_POINTER, and PG_RETURN_VOID.

{
    SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);

    ssup->comparator = btnamefastcmp;
    PG_RETURN_VOID();
}

Datum btoidcmp ( PG_FUNCTION_ARGS   ) 

Definition at line 250 of file nbtcompare.c.

References PG_GETARG_OID, and PG_RETURN_INT32.

{
    Oid         a = PG_GETARG_OID(0);
    Oid         b = PG_GETARG_OID(1);

    if (a > b)
        PG_RETURN_INT32(1);
    else if (a == b)
        PG_RETURN_INT32(0);
    else
        PG_RETURN_INT32(-1);
}

static int btoidfastcmp ( Datum  x,
Datum  y,
SortSupport  ssup 
) [static]

Definition at line 264 of file nbtcompare.c.

References DatumGetObjectId.

{
    Oid         a = DatumGetObjectId(x);
    Oid         b = DatumGetObjectId(y);

    if (a > b)
        return 1;
    else if (a == b)
        return 0;
    else
        return -1;
}

Datum btoidsortsupport ( PG_FUNCTION_ARGS   ) 

Definition at line 278 of file nbtcompare.c.

References SortSupportData::comparator, PG_GETARG_POINTER, and PG_RETURN_VOID.

{
    SortSupport ssup = (SortSupport) PG_GETARG_POINTER(0);

    ssup->comparator = btoidfastcmp;
    PG_RETURN_VOID();
}

Datum btoidvectorcmp ( PG_FUNCTION_ARGS   ) 

Definition at line 287 of file nbtcompare.c.

References oidvector::dim1, i, PG_GETARG_POINTER, PG_RETURN_INT32, and oidvector::values.

Referenced by oidvectoreq(), oidvectorge(), oidvectorgt(), oidvectorle(), oidvectorlt(), and oidvectorne().

{
    oidvector  *a = (oidvector *) PG_GETARG_POINTER(0);
    oidvector  *b = (oidvector *) PG_GETARG_POINTER(1);
    int         i;

    /* We arbitrarily choose to sort first by vector length */
    if (a->dim1 != b->dim1)
        PG_RETURN_INT32(a->dim1 - b->dim1);

    for (i = 0; i < a->dim1; i++)
    {
        if (a->values[i] != b->values[i])
        {
            if (a->values[i] > b->values[i])
                PG_RETURN_INT32(1);
            else
                PG_RETURN_INT32(-1);
        }
    }
    PG_RETURN_INT32(0);
}

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