Imported Healpix, cfitsio, cosmotool. Added cmake tool to build dependencies (cfitsio, hdf5, netcdf, boost, healpix, gsl, ..). Adjusted CMakeLists.txt

external/cosmotool/src/interpolate.hpp

@@ -0,0 +1,65 @@
+#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)
+      throw (InvalidRangeException);
+    double compute(double x) const
+      throw (InvalidRangeException);
+    double derivative(double x)
+      throw (InvalidRangeException);
+
+    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)
+    throw (NoSuchFileException);
+  Interpolate buildInterpolateFromColumns(const char *fname, uint32_t col1, uint32_t col2, bool logx = false, bool logy = false)
+    throw (NoSuchFileException,InvalidRangeException);
+  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