Mercurial > repos > non-riemannian-opt / file comparison
comparison: src/zero.rs
src/zero.rs
- changeset 55
- 15f01efc034b
- parent 19
- bc7f268b324a
equal
deleted
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| 54:cfd8d2304e9e | 55:15f01efc034b |
|---|---|
| 1 /*! | 1 /*! |
| 2 Implementation of the the constant zero function on a manifold. | 2 Implementation of the the constant zero function on a manifold. |
| 3 */ | 3 */ |
| 4 | 4 |
| 5 use alg_tools::mapping::Apply; | 5 use alg_tools::mapping::{Mapping, Instance}; |
| 6 use crate::manifold::ManifoldPoint; | 6 use crate::manifold::ManifoldPoint; |
| 7 use crate::fb::{Grad, Desc, Prox}; | 7 use crate::fb::{Grad, Desc, Prox}; |
| 8 use std::marker::PhantomData; | 8 use std::marker::PhantomData; |
| 9 | 9 |
| 10 /// Zero function on manifolds. | 10 /// Zero function on manifolds. |
| 17 pub fn new() -> Self { | 17 pub fn new() -> Self { |
| 18 ZeroFn{_phantoms : PhantomData } | 18 ZeroFn{_phantoms : PhantomData } |
| 19 } | 19 } |
| 20 } | 20 } |
| 21 | 21 |
| 22 impl<M : ManifoldPoint> Apply<M> for ZeroFn<M> { | 22 impl<M : ManifoldPoint> Mapping<M> for ZeroFn<M> { |
| 23 type Output = f64; | 23 type Codomain = f64; |
| 24 | 24 |
| 25 fn apply(&self, _x : M) -> Self::Output { | 25 fn apply<I : Instance<M>>(&self, _x : I) -> Self::Codomain { |
| 26 0.0 | 26 0.0 |
| 27 } | 27 } |
| 28 } | 28 } |
| 29 | 29 |
| 30 impl<'a, M : ManifoldPoint> Apply<&'a M> for ZeroFn<M> { | |
| 31 type Output = f64; | |
| 32 | |
| 33 fn apply(&self, _x : &'a M) -> Self::Output { | |
| 34 0.0 | |
| 35 } | |
| 36 } | |
| 37 | 30 |
| 38 impl<M : ManifoldPoint> Desc<M> for ZeroFn<M> { | 31 impl<M : ManifoldPoint> Desc<M> for ZeroFn<M> { |
| 39 fn desc(&self, _τ : f64, x : M) -> M { | 32 fn desc(&self, _τ : f64, x : M) -> M { |
| 40 x | 33 x |
| 41 } | 34 } |
