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