IFEM  90A354
Public Member Functions | Protected Member Functions | Private Attributes | List of all members
ChebyshevTensorFunc Class Reference

A tensor-valued spatial function, chebyshev polynomials. More...

#include <Chebyshev.h>

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Public Member Functions

 ChebyshevTensorFunc (const std::vector< std::string > &input, bool file)
 The constructor initializes the function parameters from files. More...
 
bool isZero () const override
 Returns whether the function is identically zero or not.
 
- Public Member Functions inherited from TensorFunc
virtual ~TensorFunc ()
 Empty destructor.
 
virtual unsigned char getType () const
 Returns the function type flag.
 
virtual std::vector< RealgetValue (const Vec3 &X) const
 Returns the function value as an array.
 
virtual Real getScalarValue (const Vec3 &X) const
 Returns a representative scalar equivalent of the function value.
 
utl::matrix3d< Realgradient (const Vec3 &X) const
 Evaluates first derivatives of the function.
 
utl::matrix4d< Realhessian (const Vec3 &X) const
 Evaluates second derivatives of the function.
 
Tensor timeDerivative (const Vec3 &X) const
 Evaluates time derivatives of the function.
 
- Public Member Functions inherited from utl::SpatialFunction< Tensor >
virtual Tensor deriv (const Vec3 &, int) const
 Returns a first-derivative of the function.
 
virtual Tensor dderiv (const Vec3 &, int, int) const
 Returns a second-derivative of the function.
 
- Public Member Functions inherited from utl::Function< Arg, Result >
virtual ~Function ()
 Empty destructor.
 
virtual bool isConstant () const
 Returns whether the function is time-independent or not.
 
Result operator() (const Arg &x) const
 Operator returning the function value for the given argument.
 
- Public Member Functions inherited from FunctionBase
virtual ~FunctionBase ()
 Empty destructor.
 
size_t dim () const
 Returns the number of components of the return value.
 
virtual bool initPatch (size_t)
 Sets the active patch.
 
virtual bool inDomain (const Vec3 &) const
 Checks if a specified point is within the function domain.
 
virtual void setParam (const std::string &, Real)
 Sets an additional parameter in the function.
 
void setParam (const std::string &name, const Vec3 &value)
 Sets additional parameter values in the function.
 

Protected Member Functions

Tensor evaluate (const Vec3 &X) const override
 Evaluates the function at point X.
 
std::vector< RealevalGradient (const Vec3 &) const override
 Returns the gradient of the function as a 1D array.
 
std::vector< RealevalHessian (const Vec3 &) const override
 Returns the hessian of the function as a 1D array.
 
- Protected Member Functions inherited from TensorFunc
 TensorFunc (size_t n=0)
 The constructor is protected to allow sub-class instances only.
 
- Protected Member Functions inherited from utl::SpatialFunction< Tensor >
 SpatialFunction (const Tensor &val)
 The constructor is protected to allow sub-class instances only.
 
virtual std::vector< RealevalTimeDerivative (const Vec3 &) const
 Returns the time derivatives of the function as a 1D array.
 
- Protected Member Functions inherited from utl::Function< Arg, Result >
 Function ()
 The constructor is protected to allow sub-class instances only.
 
virtual Result evaluate (const Arg &x) const =0
 Evaluates the function for the argument x.
 
- Protected Member Functions inherited from FunctionBase
 FunctionBase ()
 The constructor is protected to allow sub-class instances only.
 

Private Attributes

std::vector< std::unique_ptr< ChebyshevFunc > > f
 Vector of components.
 

Additional Inherited Members

- Public Types inherited from utl::Function< Arg, Result >
typedef Arg Input
 Input type.
 
typedef Result Output
 Output type.
 
- Protected Attributes inherited from utl::SpatialFunction< Tensor >
Tensor zero
 Return value for default implementations of derivatives.
 
- Protected Attributes inherited from FunctionBase
size_t ncmp
 Number of components in the return value.
 

Detailed Description

A tensor-valued spatial function, chebyshev polynomials.

Constructor & Destructor Documentation

◆ ChebyshevTensorFunc()

ChebyshevTensorFunc::ChebyshevTensorFunc ( const std::vector< std::string > &  input,
bool  file 
)

The constructor initializes the function parameters from files.

Parameters
[in]inputName of files or strings to read coefs from
[in]fileTrue if input is file names

References f.


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