#include <alpaqa/include/alpaqa/accelerators/lbfgs.hpp>

Detailed Description

template<Config Conf = DefaultConfig>
struct alpaqa::LBFGSStorage< Conf >

Layout:

      ┌───── 2 m ─────┐
    ┌ ┌───┬───┬───┬───┐
    │ │   │   │   │   │
    │ │ s │ y │ s │ y │
n+1 │ │   │   │   │   │
    │ ├───┼───┼───┼───┤
    │ │ ρ │ α │ ρ │ α │
    └ └───┴───┴───┴───┘

Definition at line 76 of file accelerators/lbfgs.hpp.

Collaboration diagram for LBFGSStorage< Conf >:

Public Types
using	storage_t = mat

Public Member Functions
void	resize (length_t n, length_t history)
	Re-allocate storage for a problem with a different size.

length_t	n () const
	Get the size of the s and y vectors in the buffer.

length_t	history () const
	Get the number of previous vectors s and y stored in the buffer.

auto	s (index_t i)

auto	s (index_t i) const

auto	y (index_t i)

auto	y (index_t i) const

real_t &	ρ (index_t i)

real_t &	ρ (index_t i) const

real_t &	α (index_t i)

real_t &	α (index_t i) const

Public Attributes
storage_t	sto

Member Typedef Documentation

◆ storage_t

using storage_t = mat

Definition at line 100 of file accelerators/lbfgs.hpp.

Member Function Documentation

◆ resize()

void resize	(	length_t	n,
		length_t	history
	)

Re-allocate storage for a problem with a different size.

Definition at line 221 of file lbfgs.tpp.

◆ n()

length_t n ( ) const

inline

Get the size of the s and y vectors in the buffer.

Definition at line 83 of file accelerators/lbfgs.hpp.

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◆ history()

length_t history ( ) const

inline

Get the number of previous vectors s and y stored in the buffer.

Definition at line 85 of file accelerators/lbfgs.hpp.

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