/*
* call-seq:
* res.nparams() -> Fixnum
*
* Returns the number of parameters of a prepared statement.
* Only useful for the result returned by conn.describePrepared
*/
static VALUE
pgresult_nparams(VALUE self)
{
PGresult *result;
result = get_pgresult(self);
return INT2FIX(PQnparams(result));
}