96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
/*+
|
|
This is CosmoTool (./src/interpolate.hpp) -- Copyright (C) Guilhem Lavaux (2007-2014)
|
|
|
|
guilhem.lavaux@gmail.com
|
|
|
|
This software is a computer program whose purpose is to provide a toolbox for cosmological
|
|
data analysis (e.g. filters, generalized Fourier transforms, power spectra, ...)
|
|
|
|
This software is governed by the CeCILL license under French law and
|
|
abiding by the rules of distribution of free software. You can use,
|
|
modify and/ or redistribute the software under the terms of the CeCILL
|
|
license as circulated by CEA, CNRS and INRIA at the following URL
|
|
"http://www.cecill.info".
|
|
|
|
As a counterpart to the access to the source code and rights to copy,
|
|
modify and redistribute granted by the license, users are provided only
|
|
with a limited warranty and the software's author, the holder of the
|
|
economic rights, and the successive licensors have only limited
|
|
liability.
|
|
|
|
In this respect, the user's attention is drawn to the risks associated
|
|
with loading, using, modifying and/or developing or reproducing the
|
|
software by the user in light of its specific status of free software,
|
|
that may mean that it is complicated to manipulate, and that also
|
|
therefore means that it is reserved for developers and experienced
|
|
professionals having in-depth computer knowledge. Users are therefore
|
|
encouraged to load and test the software's suitability as regards their
|
|
requirements in conditions enabling the security of their systems and/or
|
|
data to be ensured and, more generally, to use and operate it in the
|
|
same conditions as regards security.
|
|
|
|
The fact that you are presently reading this means that you have had
|
|
knowledge of the CeCILL license and that you accept its terms.
|
|
+*/
|
|
|
|
#ifndef __CTOOL_INTERPOLATE_HPP
|
|
#define __CTOOL_INTERPOLATE_HPP
|
|
|
|
#include "config.hpp"
|
|
#include <inttypes.h>
|
|
#include <gsl/gsl_interp.h>
|
|
#include <gsl/gsl_spline.h>
|
|
#include <vector>
|
|
#include <utility>
|
|
|
|
namespace CosmoTool
|
|
{
|
|
|
|
class Interpolate
|
|
{
|
|
public:
|
|
Interpolate() : spline(0), accel_interp(0) { }
|
|
Interpolate(double *xs, double *values, uint32_t N, bool autofree = false,
|
|
bool logx = false, bool logy = false);
|
|
~Interpolate();
|
|
|
|
double compute(double x);
|
|
double compute(double x) const;
|
|
double derivative(double x);
|
|
|
|
const Interpolate& operator=(const Interpolate& a);
|
|
|
|
uint32_t getNumPoints() const;
|
|
void fillWithXY(double *x, double *y) const;
|
|
double getMaxX() const;
|
|
double getXi(int i) const { return spline->x[i]; }
|
|
double getYi(int i) const { return spline->y[i]; }
|
|
protected:
|
|
gsl_interp_accel *accel_interp;
|
|
gsl_spline *spline;
|
|
bool autoFree;
|
|
bool logx, logy;
|
|
};
|
|
|
|
typedef std::vector< std::pair<double,double> > InterpolatePairs;
|
|
|
|
Interpolate buildInterpolateFromFile(const char *fname);
|
|
Interpolate buildInterpolateFromColumns(const char *fname, uint32_t col1, uint32_t col2, bool logx = false, bool logy = false);
|
|
Interpolate buildFromVector(const InterpolatePairs& v);
|
|
|
|
|
|
class FunctorInterpolate
|
|
{
|
|
public:
|
|
FunctorInterpolate(Interpolate& i) : m_i(i) {}
|
|
|
|
double eval(double x) { return m_i.compute(x); }
|
|
double derivative(double x) { return m_i.derivative(x); }
|
|
private:
|
|
Interpolate& m_i;
|
|
};
|
|
|
|
};
|
|
|
|
#endif
|