Macro rust_ad::forward

forward!() { /* proc-macro */ }

Calls forward auto-differentiation function corresponding to a given function.

E.g.:

#[rust_ad::forward_autodiff]
fn function_name(x: f32, y: f32) -> f32 {
    let a = 7. * x;
    let b = 3. * y;
    return b;
}
fn main() {
    println!("{:?}",rust_ad::forward!(function_name,2.,4.,1.,5.))
}

This is just a procedural functional macro replacement for the declarative macro:

#[macro_export]
macro_rules! forward {
    ($f:ident,$($x:expr),*) => {{
        FORWARD_MODE_PREFIX$ident($($x,)*);
    }}
}

Since you can’t export declarative macros from a procedural macro crate.