status = dp_real_number._copy(out_number_value, in_string_value);
Assert.assertEquals(1, status);
Assert.assertEquals(11, out_number_value.longValue());
// copy string to number (value = "-11")
out_number_value.longValue(0);
in_string_value.charValue("-11");
status = dp_real_number._copy(out_number_value, in_string_value);
Assert.assertEquals(1, status);
Assert.assertEquals(-11, out_number_value.longValue());
// copy string to number (value = null)
out_number_value.longValue(0);