returns the central difference approx to the derivative of the function, ie (f(t, p + direction) - f(t, p - direction))/2/|direction| This derives from MooseParsedFunction, so it already knows about a function More...
#include <GradParsedFunction.h>
Public Member Functions | |
GradParsedFunction (const InputParameters ¶meters) | |
virtual Real | value (Real t, const Point &pt) |
Protected Attributes | |
RealVectorValue | _direction |
central difference direction More... | |
Real | _len |
2*|_direction| More... | |
returns the central difference approx to the derivative of the function, ie (f(t, p + direction) - f(t, p - direction))/2/|direction| This derives from MooseParsedFunction, so it already knows about a function
Definition at line 27 of file GradParsedFunction.h.
GradParsedFunction::GradParsedFunction | ( | const InputParameters & | parameters | ) |
Definition at line 27 of file GradParsedFunction.C.
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virtual |
Definition at line 37 of file GradParsedFunction.C.
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protected |
central difference direction
Definition at line 36 of file GradParsedFunction.h.
Referenced by GradParsedFunction(), and value().
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protected |
2*|_direction|
Definition at line 39 of file GradParsedFunction.h.
Referenced by GradParsedFunction(), and value().