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use std::any::Any; use std::any::TypeId; use std::fmt::Debug; /// The basic scalar type for all structures of `nalgebra`. /// /// This does not make any assumption on the algebraic properties of `Self`. pub trait Scalar: Clone + PartialEq + Debug + Any { #[inline] /// Tests if `Self` the same as the type `T` /// /// Typically used to test of `Self` is a f32 or a f64 with `N::is::<f32>()`. fn is<T: Scalar>() -> bool { TypeId::of::<Self>() == TypeId::of::<T>() } #[inline(always)] /// Performance hack: Clone doesn't get inlined for Copy types in debug mode, so make it inline anyway. fn inlined_clone(&self) -> Self { self.clone() } } impl<T: Copy + PartialEq + Debug + Any> Scalar for T { #[inline(always)] fn inlined_clone(&self) -> T { *self } }