Panic on round call

[mashedcode]

use bigdecimal::BigDecimal;
use std::str::FromStr;

fn main() {
    let decimal = BigDecimal::from_str("0.1165085714285714285714285714285714285714").unwrap();
    decimal.round(0); // called `Option::unwrap()` on a `None` value bigdecimal-rs/src/lib.rs:594:43
}

This panics. Complied against master.

[Niedzwiedzw]

same

[yamelsenih]

I think that a simple solution can be trunc the number if the digits is to long that i128 support

Best regards.

[yamelsenih]

Other solution is handle it as String instead

[akubera]

This has been fixed, and the example (for multiple rounding points) has been added to the unit tests.