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#include "btree_gist.h"
#include "btree_utils_num.h"
typedef struct int16key
{
int16 lower;
int16 upper;
} int16KEY;
/*
** int16 ops
*/
PG_FUNCTION_INFO_V1(gbt_int2_compress);
PG_FUNCTION_INFO_V1(gbt_int2_union);
PG_FUNCTION_INFO_V1(gbt_int2_picksplit);
PG_FUNCTION_INFO_V1(gbt_int2_consistent);
PG_FUNCTION_INFO_V1(gbt_int2_penalty);
PG_FUNCTION_INFO_V1(gbt_int2_same);
Datum gbt_int2_compress(PG_FUNCTION_ARGS);
Datum gbt_int2_union(PG_FUNCTION_ARGS);
Datum gbt_int2_picksplit(PG_FUNCTION_ARGS);
Datum gbt_int2_consistent(PG_FUNCTION_ARGS);
Datum gbt_int2_penalty(PG_FUNCTION_ARGS);
Datum gbt_int2_same(PG_FUNCTION_ARGS);
static bool gbt_int2gt (const void *a, const void *b)
{
return ( *((int16*)a) > *((int16*)b) );
}
static bool gbt_int2ge (const void *a, const void *b)
{
return ( *((int16*)a) >= *((int16*)b) );
}
static bool gbt_int2eq (const void *a, const void *b)
{
return ( *((int16*)a) == *((int16*)b) );
}
static bool gbt_int2le (const void *a, const void *b)
{
return ( *((int16*)a) <= *((int16*)b) );
}
static bool gbt_int2lt (const void *a, const void *b)
{
return ( *((int16*)a) < *((int16*)b) );
}
static int
gbt_int2key_cmp(const void *a, const void *b)
{
if ( *(int16*)(&((Nsrt *) a)->t[0]) > *(int16*)&(((Nsrt *) b)->t[0]) ){
return 1;
} else
if ( *(int16*)&(((Nsrt *) a)->t[0]) < *(int16*)&(((Nsrt *) b)->t[0]) ){
return -1;
}
return 0;
}
static const gbtree_ninfo tinfo =
{
gbt_t_int2,
sizeof(int16),
gbt_int2gt,
gbt_int2ge,
gbt_int2eq,
gbt_int2le,
gbt_int2lt,
gbt_int2key_cmp
};
/**************************************************
* int16 ops
**************************************************/
Datum
gbt_int2_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval = NULL;
PG_RETURN_POINTER( gbt_num_compress( retval , entry , &tinfo ));
}
Datum
gbt_int2_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
int16 query = PG_GETARG_INT16(1);
int16KEY *kkk = (int16KEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key ;
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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)
);
}
Datum
gbt_int2_union(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
void *out = palloc(sizeof(int16KEY));
*(int *) PG_GETARG_POINTER(1) = sizeof(int16KEY);
PG_RETURN_POINTER( gbt_num_union ( (void*)out, entryvec, &tinfo ) );
}
Datum
gbt_int2_penalty(PG_FUNCTION_ARGS)
{
int16KEY *origentry = (int16KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
int16KEY *newentry = (int16KEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
float *result = (float *) PG_GETARG_POINTER(2);
int2 res ;
*result = 0.0;
penalty_range_enlarge ( origentry->lower, origentry->upper, newentry->lower, newentry->upper );
if ( res > 0 ){
*result += FLT_MIN ;
*result += (float) ( res / ( (double) ( res + origentry->upper - origentry->lower ) ) );
*result *= ( FLT_MAX / ( ( (GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1 ) );
}
PG_RETURN_POINTER(result);
}
Datum
gbt_int2_picksplit(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(gbt_num_picksplit(
(GistEntryVector *) PG_GETARG_POINTER(0),
(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
&tinfo
));
}
Datum
gbt_int2_same(PG_FUNCTION_ARGS)
{
int16KEY *b1 = (int16KEY *) PG_GETARG_POINTER(0);
int16KEY *b2 = (int16KEY *) PG_GETARG_POINTER(1);
bool *result = (bool *) PG_GETARG_POINTER(2);
*result = gbt_num_same ( (void*)b1, (void*)b2, &tinfo );
PG_RETURN_POINTER(result);
}
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