dxpr 0.2.3

Differentiable expression templates in compile-time, dependency-free, no_std Rust.
Documentation 
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//! Expression template! Here it is!

use crate::{eval::Eval, grad::Grad, leaf::Leaf};

/// Expression template! Here it is!
#[derive(Debug)]
pub struct Expr<T: ~const Eval>(pub(crate) T);

crate::implement_eval!(T: Eval => Expr<T> >-> T::Evaluated: |self| where own { self.0.eval() } else { (&self.0).eval() });
crate::implement_grad!(T: Grad => Expr<T> >-> Expr<T::Differentiated>: |self, x| where own { Expr(self.0.grad(x)) } else { Expr((&self.0).grad(x)) });

/// Treat this reference as the basis for a `dxpr` tree rather than as a Rust value to eagerly evaluate.
#[inline(always)]
pub const fn var<T: ~const Leaf>(x: &T) -> Expr<&T> {
    Expr(x)
}