MtxIntDiff.NumericGradDifference Function

Numerical gradient by numerical differentiation using the forward difference quotient.

Pascal

procedure NumericGradDifference(Fun: TRealFunction; const Pars: TVec; const Consts: TVec; Const ObjConst: Array of TObject; const Grad: TVec);

File

MtxIntDiff

Parameters

Parameters	Description
Fun	Real function of several variables.
Pars	Function variables.
Consts	Array of additional constants which can be used in math formula.
ObjConst	Array of additional constants (pointers) which can be used in math formula.
Grad	Returns calculated gradient. If needed, Grad Length and Complex properties are adjusted automatically.

Description

Calculates the numerical gradient by numerical differentiation using the forward difference quotient. The NumericGradDifference procedure can be used with a very moderate ( >= 1.0e-4) precision requirement.