05_advanced_input.cpp

Every data that is stored in the SLHAea containers is stored as string. Data that represent numbers need to be converted to numeric types in order to use them as numbers in your program. The conversion of strings to floating point numbers is demonstrated in this example:

#include <fstream>
#include <iostream>
#include <slhaea.h>

using namespace std;
using namespace SLHAea;

int main()
{
  ifstream ifs("slha1.txt");
  const Coll input(ifs);

  double alpha_em = to<double>(input.at("SMINPUTS").at("1").at(1));
  double G_mu     = to<double>(input.at("SMINPUTS").at("2").at(1));
  double alpha_s  = to<double>(input.at("SMINPUTS").at("3").at(1));
  double m_Z      = to<double>(input.at("SMINPUTS").at("4").at(1));
  double m_b      = to<double>(input.at("SMINPUTS").at("5").at(1));
  double m_t      = to<double>(input.at("SMINPUTS").at("6").at(1));
  double m_tau    = to<double>(input.at("SMINPUTS").at("7").at(1));

  cout << "1/alpha_em: " << 1./alpha_em << endl;
  cout << "1/G_mu:     " << 1./G_mu     << endl;
  cout << "1/alpha_s:  " << 1./alpha_s  << endl;
  cout << "1/m_Z:      " << 1./m_Z      << endl;
  cout << "1/m_b:      " << 1./m_b      << endl;
  cout << "1/m_t:      " << 1./m_t      << endl;
  cout << "1/m_tau:    " << 1./m_tau    << endl;
}