function.hh
fbfcad1b6cb9master

function.hh
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			#ifndef __INTER_FUNC__
			#define __INTER_FUNC__
			/* -------------------------------------------------------------------------- */
			#include <vector>
			/* -------------------------------------------------------------------------- */
			#include <string.h>
			#include <string>
			#include <fftw.h>
			#include <iostream>
			#include <fstream>
			/* -------------------------------------------------------------------------- */
			#include <string>
			#include <math.h>
			/* -------------------------------------------------------------------------- */

			enum INTER_FUNCTION_TYPE { ZERO, LINEAR, SQ_ROOT, PARABOLA, CUBIC_HERMITE, CUBIC_BEZIER, QUADRATIC_BEZIER, TEST_INTER };

			class INTER_FUNC {
			public:

			INTER_FUNC();
			INTER_FUNC(INTER_FUNCTION_TYPE type_, std::vector<Real> points_);
			INTER_FUNC(INTER_FUNCTION_TYPE type_, std::vector<Real> points_, Real a);
			~INTER_FUNC();

			INTER_FUNCTION_TYPE type;
			bool sm_error;
			std::vector<Real> points, coef;
			// return function value for 0<=x<1
			Real get_value(Real x);
			Real get_derivative(Real x);

			};

			#endif