Overflow panic in atan2

[kosz78]

Example

type Fixed = fixed::types::I32F32;

fn main() {
    let y = Fixed::overflowing_from_str("0.3333392185").unwrap().0;
    let x = Fixed::overflowing_from_str("-0.0000000002").unwrap().0;
    println!("{}, {}", x, y);
    let res = cordic::atan2(y, x);
}

Error

x=-0.0000000002, y=0.3333392185
thread 'main' panicked at 'attempt to add with overflow', /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c\library\core\src\ops\arith.rs:133:1
stack backtrace:
   0: std::panicking::begin_panic_handler
             at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c\/library\std\src\panicking.rs:584
   1: core::panicking::panic_fmt
             at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c\/library\core\src\panicking.rs:143
   2: core::panicking::panic
             at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c\/library\core\src\panicking.rs:48
   3: core::ops::arith::impl$10::add
             at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c\library\core\src\ops\arith.rs:126
   4: fixed::arith::impl$1870::add<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UTerm,typenum::bit::B1>,typenum::bit::B0>,typenum::bit::B0>,typenum::bit::B0>,typenum::bit:
             at C:\Users\user\.cargo\registry\src\github.com-1ecc6299db9ec823\fixed-1.15.0\src\arith.rs:118
   5: cordic::cordic_circular<fixed::FixedI64<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UTerm,typenum::bit::B1>,typenum::bit::B0>,typenum::bit::B0>,typenum::bit::B0>,ty
             at C:\Users\user\.cargo\registry\src\github.com-1ecc6299db9ec823\cordic-0.1.5\src\lib.rs:36
   6: cordic::atan<fixed::FixedI64<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UTerm,typenum::bit::B1>,typenum::bit::B0>,typenum::bit::B0>,typenum::bit::B0>,typenum::bit:
             at C:\Users\user\.cargo\registry\src\github.com-1ecc6299db9ec823\cordic-0.1.5\src\lib.rs:121
   7: cordic::atan2<fixed::FixedI64<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UInt<typenum::uint::UTerm,typenum::bit::B1>,typenum::bit::B0>,typenum::bit::B0>,typenum::bit::B0>,typenum::bit
             at C:\Users\user\.cargo\registry\src\github.com-1ecc6299db9ec823\cordic-0.1.5\src\lib.rs:145
   8: cordic_test::main
             at .\src\main.rs:7
   9: core::ops::function::FnOnce::call_once<void (*)(),tuple$<> >
             at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c\library\core\src\ops\function.rs:227