Function to_dec_string 

pub fn to_dec_string<T>(val: &Ratio<T>, frac_digit_count: usize) -> String
where
    T: Clone + Display + From<u8> + Integer + Pow<usize, Output = T>,

Returns a String representing val in decimal notation with frac_digit_count fractional digits using normal rounding rules.

Panics

May panic if T implements arithmetic in a way where panics occur on overflow or underflow.