CommonTools/Statistics/src/IncompleteGammaComplement.h - master - githubmirror/cmssw

CommonTools/Statistics/src/IncompleteGammaComplement.h

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03 июн 2019, 06:44

03 июн 2019, 06:446a63925

#ifndef IncompleteGammaComplement_H
#define IncompleteGammaComplement_H

/** \class IncompleteGammaComplement
 *  Computes the complement Q(a,x)=1-P(a,x) of the incomplete gamma function. 
 *  Computes its natural logarithm, useful for comparing very small values. 
 *  source: Numerical Recipes
 */
class IncompleteGammaComplement {
public:
  static float value(float a, float x);

  static float ln(float a, float x);
};

#endif