dfdx 0.13.0

Ergonomic auto differentiation in Rust, with pytorch like apis.
Documentation 
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use crate::tensor_ops::cpu_kernels::UnaryDerivative;

impl<F: num_traits::Float> UnaryDerivative<F> for super::SquareKernelOp {
    const DF_USES_FX: bool = false;
    const HAS_CONST_DF: bool = false;
    #[inline(always)]
    fn f(&self, x: &F) -> F {
        x.powi(2)
    }
    #[inline(always)]
    fn df(&self, &x: &F) -> F {
        x + x
    }
}