#include <ScalarFunctionsImpl.h>

Inheritance diagram for PowScalarFunction:

Collaboration diagram for PowScalarFunction:

Public Member Functions
	PowScalarFunction (const doublereal p)

virtual	~PowScalarFunction (void)

virtual doublereal	operator() (const doublereal x) const

virtual doublereal	ComputeDiff (const doublereal t, const integer order=1) const

Public Member Functions inherited from DifferentiableScalarFunction
virtual	~DifferentiableScalarFunction ()

Public Member Functions inherited from BasicScalarFunction
virtual	~BasicScalarFunction ()

Private Attributes
const doublereal	pw

Detailed Description

Definition at line 82 of file ScalarFunctionsImpl.h.

Constructor & Destructor Documentation

PowScalarFunction::PowScalarFunction ( const doublereal p )

Definition at line 236 of file ScalarFunctionsImpl.cc.

References NO_OP.

 : pw(p)
 {
         NO_OP;
 }

PowScalarFunction::~PowScalarFunction ( void )

virtual

Definition at line 242 of file ScalarFunctionsImpl.cc.

References NO_OP.

 {
         NO_OP;
 }

Member Function Documentation

doublereal PowScalarFunction::ComputeDiff	(	const doublereal	t,
		const integer	order = `1`
	)		const

virtual

Implements DifferentiableScalarFunction.

Definition at line 254 of file ScalarFunctionsImpl.cc.

References ASSERTMSGBREAK, operator()(), order, grad::pow(), and pw.

 {
         ASSERTMSGBREAK(order >=0, "Error in PowScalarFunction::ComputeDiff, order<0");
         switch (order) {
         case 0: 
                 return this->operator()(x);
 
         default:
                 doublereal mul = 1.;
                 for (integer i = 0; i < order; i++) {
                         mul *= pw - i;
                 }
                 return mul*pow(x, pw - order);
 
         }
 }