Function rin::math::atan2

pub fn atan2<T>(
    v1: &Matrix<T, U2, U1, <DefaultAllocator as Allocator<T, U2, U1>>::Buffer>, 
    v2: &Matrix<T, U2, U1, <DefaultAllocator as Allocator<T, U2, U1>>::Buffer>
) -> Rad<T> where
    T: Float + BaseNum,