Reset the cursor to start from the record 1

Hi, ALL,
I'd like to do the following:

[code]
PGresult res = PQprepare();
if( PQresultStatus( res ) != PGRES_COMMAND_OK )
{
// error handling
}
else
{
PGresult res1 = PQexecPrepared();
status = PQresultStatus( res1 );
if( status != PGRES_COMMAND_OK && status != PGRES_TUPLES_OK )
{
// error handling
}
else if( status == PGRES_TUPLES_OK )
{
for( int j = 0; j < PQntuples( res1 ); j++ )
{
// process the recordset
}
for( int j = 0; j < PQntuples( res1); j++ )
{
// process the same recordset again
}
}
}
[/code]

Is there a function which just reset the record pointer to 1, so I can reprocess
those records?

Thank you.