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    use std::mem;
    use std::ops::{Deref, DerefMut};

    use alga::general::RealField;

    use crate::base::coordinates::IJKW;

    use crate::geometry::Quaternion;

    impl<N: RealField> Deref for Quaternion<N> {
        type Target = IJKW<N>;

        #[inline]
        fn deref(&self) -> &Self::Target {
            unsafe { mem::transmute(self) }
        }
    }

    impl<N: RealField> DerefMut for Quaternion<N> {
        #[inline]
        fn deref_mut(&mut self) -> &mut Self::Target {
            unsafe { mem::transmute(self) }
        }
    }

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