stan::math::vari_value< T, require_eigen_sparse_base_t< T > > Class Template Reference

Detailed Description

template<typename T>
class stan::math::vari_value< T, require_eigen_sparse_base_t< T > >

The variable implementation for Eigen sparse matrix types.

This class is complete (not abstract) and may be used for constants.

A variable implementation is constructed with a constant value. It also stores the adjoint for storing the partial derivative with respect to the root of the derivative tree.

Definition at line 826 of file vari.hpp.

#include <vari.hpp>

Inheritance diagram for stan::math::vari_value< T, require_eigen_sparse_base_t< T > >:

Public Types
using	PlainObject = plain_type_t< T >
using	value_type = PlainObject
using	InnerIterator = typename arena_matrix< PlainObject >::InnerIterator

Public Member Functions
template<typename S , require_convertible_t< S &, T > * = nullptr>
	vari_value (S &&x)
	Construct a variable implementation from a value.
	vari_value (const arena_matrix< PlainObject > &val, const arena_matrix< PlainObject > &adj)
template<typename S , require_convertible_t< S &, T > * = nullptr>
	vari_value (S &&x, bool stacked)
	Construct an sparse Eigen variable implementation from a value.
Eigen::Index	rows () const
	Return the number of rows for this class's val_ member.
Eigen::Index	cols () const
	Return the number of columns for this class's val_ member.
Eigen::Index	size () const
	Return the size of this class's val_ member.
const auto &	val () const
	Return a constant reference to the value of this vari.
auto &	val_op ()
auto &	adj ()
	Return a reference to the derivative of the root expression with respect to this expression.
auto &	adj () const
auto &	adj_op ()
void	chain ()
	Apply the chain rule to this variable based on the variables on which it depends.
void	init_dependent ()
	Initialize the adjoint for this (dependent) variable to 1.
void	set_zero_adjoint () noexcept final
	Set the adjoint value of this variable to 0.

Static Public Member Functions
static void *	operator new (size_t nbytes) noexcept
	Allocate memory from the underlying memory pool.
static void	operator delete (void *) noexcept
	Delete a pointer from the underlying memory pool.

Public Attributes
arena_matrix< PlainObject >	val_
	The value of this variable.
arena_matrix< PlainObject >	adj_
	The adjoint of this variable, which is the partial derivative of this variable with respect to the root variable.

Static Public Attributes
static constexpr int	RowsAtCompileTime = T::RowsAtCompileTime
	Rows at compile time.
static constexpr int	ColsAtCompileTime = T::ColsAtCompileTime
	Columns at compile time.

Friends
template<typename , typename >
class	var_value
std::ostream &	operator<< (std::ostream &os, const vari_value< T > *v)
	Insertion operator for vari.

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The documentation for this class was generated from the following file:

• stan/math/rev/core/vari.hpp