/*
* call-seq:
* res.fsize( index )
*
* Returns the size of the field type in bytes. Returns <tt>-1</tt> if the field is variable sized.
*
* res = conn.exec("SELECT myInt, myVarChar50 FROM foo")
* res.size(0) => 4
* res.size(1) => -1
*/
static VALUE
pgresult_fsize(VALUE self, VALUE index)
{
PGresult *result;
int i = NUM2INT(index);
result = get_pgresult(self);
if (i < 0 || i >= PQnfields(result)) {
rb_raise(rb_eArgError,"invalid field number %d", i);
}
return INT2NUM(PQfsize(result, i));
}