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#![feature(prelude_import)]
#![no_std]
//@ needs-enzyme
#![feature(autodiff)]
#[prelude_import]
use ::std::prelude::rust_2015::*;
#[macro_use]
extern crate std;
//@ pretty-mode:expanded
//@ pretty-compare-only
//@ pp-exact:inherent_impl.pp
use std::autodiff::autodiff_reverse;
struct Foo {
a: f64,
}
trait MyTrait {
fn f(&self, x: f64)
-> f64;
fn df(&self, x: f64, seed: f64)
-> (f64, f64);
}
impl MyTrait for Foo {
#[rustc_autodiff]
#[inline(never)]
fn f(&self, x: f64) -> f64 {
self.a * 0.25 * (x * x - 1.0 - 2.0 * x.ln())
}
#[rustc_autodiff(Reverse, 1, Const, Active, Active)]
#[inline(never)]
fn df(&self, x: f64, dret: f64) -> (f64, f64) {
unsafe { asm!("NOP", options(pure, nomem)); };
::core::hint::black_box(self.f(x));
::core::hint::black_box((dret,));
::core::hint::black_box((self.f(x), f64::default()))
}
}
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