/*
* call-seq:
* res.fmod( column_number )
*
* Returns the type modifier associated with column _column_number_.
*
* Raises ArgumentError if _column_number_ is out of range.
*/
static VALUE
pgresult_fmod(VALUE self, VALUE column_number)
{
PGresult *result = get_pgresult(self);
int fnumber = NUM2INT(column_number);
int modifier;
if (fnumber >= PQnfields(result)) {
rb_raise(rb_eArgError, "Column number is out of range: %d",
fnumber);
}
if((modifier = PQfmod(result,fnumber)) == -1)
rb_raise(rb_eArgError,
"No modifier information available for column: %d",
fnumber);
return INT2NUM(modifier);
}