stats.cpp

常用的数学统计算法

#include <iostream>
#include <sstream>
#include <cmath>
#include <gsl/gsl_math.h>
#include "gsl_statext.h"

// M A I N
int main (int argc, char* argv[]) {
  double x = 0;
  
  if (argv[1] != NULL) {
    std::istringstream istr (argv[1]);
    istr >> x;
  }
  
  std::cout << "x = " << x << "; 2*PI = " << 2 * M_PI
            << "; 1/sqrt(2*PI) = " << 1 / std::sqrt (2*M_PI) << std::endl;

  std::cout << "Standard Normal Density: "
            << standardNormalDensity (x) << std::endl;

  std::cout << "Standard Normal Distribution: "
            << standardNormalDistribution (x) << std::endl;
  
  return 0;	
}