diffbifn Class Reference

Class representing a differentiable function of two variables $f(x,u)$. More...

#include <libFN.h>

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List of all members.

Public Member Functions

vec eval (const vec &cond)
 Evaluates $f(x0,u0)$ (VS: Do we really need common eval? ).
virtual vec eval (const vec &x0, const vec &u0)
 Evaluates $f(x0,u0)$.
virtual void dfdx_cond (const vec &x0, const vec &u0, mat &A, bool full=true)
 Evaluates $A=\frac{d}{dx}f(x,u)|_{x0,u0}$ and writes result into A .
virtual void dfdu_cond (const vec &x0, const vec &u0, mat &A, bool full=true)
 Evaluates $A=\frac{d}{du}f(x,u)|_{x0,u0}$ and writes result into A .
 diffbifn (const RV rvx0, const RV rvu0)
 Default constructor (dimy is not set!).
int _dimx () const
 access function
int _dimu () const
 access function
int _dimy () const
 access function

Protected Attributes

RV rvx
 Indentifier of the first rv.
RV rvu
 Indentifier of the second rv.
int dimx
 cache for rvx.count()
int dimu
 cache for rvu.count()
int dimy
 Length of the output vector.

Detailed Description

Class representing a differentiable function of two variables $f(x,u)$.

Function of two variables.

TODO: 1) Technically, it could have a common parent (e.g. fnc ) with other functions. For now, we keep it as it is. 2) It could be generalized into multivariate form, (which was original meaning of fnc ).

Member Function Documentation

virtual void diffbifn::dfdx_cond ( const vec &  x0,
const vec &  u0,
mat &  A,
bool  full = true 
) [inline, virtual]

Evaluates $A=\frac{d}{dx}f(x,u)|_{x0,u0}$ and writes result into A .

Parameters:
full denotes that even unchanged entries are to be rewritten. When, false only the changed elements are computed.
x0 numeric value of $x$,
u0 numeric value of $u$
A a place where the result will be stored.

Reimplemented in bilinfn, IMpmsm, and OMpmsm.

virtual void diffbifn::dfdu_cond ( const vec &  x0,
const vec &  u0,
mat &  A,
bool  full = true 
) [inline, virtual]

Evaluates $A=\frac{d}{du}f(x,u)|_{x0,u0}$ and writes result into A .

Parameters:
full denotes that even unchanged entries are to be rewritten. When, false only the changed elements are computed.
x0 numeric value of $x$,
u0 numeric value of $u$
A a place where the result will be stored.

Reimplemented in bilinfn, and IMpmsm.

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