Datum HASHAPI_Hash_1_timetz(PG_FUNCTION_ARGS)
{
int32 num_segs; /* number of segments */
TimeTzADT *val1; /* time w/timezone value */
unsigned int targetbucket; /* 0-based */
int16 algorithm; /* hashing algorithm */
Datum d1;
Oid oid;
/* Get number of segments */
num_segs = PG_GETARG_INT32(0);
/* Get hashing algoriithm */
algorithm = PG_GETARG_INT16(1);
/* Get the value to hash */
val1 = PG_GETARG_TIMETZADT_P(2);
d1 = TimeTzADTPGetDatum(val1);
/* create a CdbHash for this hash test. */
h = makeCdbHash(num_segs, algorithm);
/* init cdb hash */
cdbhashinit(h);
oid = TIMETZOID;
cdbhash(h, d1, oid);
/* reduce the result hash value */
targetbucket = cdbhashreduce(h);
PG_RETURN_INT32(targetbucket); /* return target bucket (segID) */
}
static Datum
leftmostvalue_timetz(void)
{
TimeTzADT *v = palloc(sizeof(TimeTzADT));
v->time = 0;
v->zone = -24 * 3600; /* XXX is that true? */
return TimeTzADTPGetDatum(v);
}