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use std::fmt;
macro_rules! strong_usize {
    ($NEW_NAME:ident) => (
        #[derive (Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
        pub struct $NEW_NAME {
            pub val: usize
        }
        impl fmt::Display for $NEW_NAME {
            fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
                write!(f, "{}", self.val)
            }
        }
    )
}
macro_rules! strong_f64 {
    ($NEW_NAME:ident) => (
        #[derive (Debug, Clone, Copy, PartialEq, PartialOrd)]
        pub struct $NEW_NAME {
            pub val: f64
        }
        impl fmt::Display for $NEW_NAME {
            fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
                write!(f, "{}", self.val)
            }
        }
    )
}
strong_usize!(VId);
strong_usize!(FId);
strong_usize!(EId);
strong_f64!(Deg);
strong_f64!(Rad);