ABACUS/src/EXECS/LiebLin_TBA_fixed_nbar.cc

/**********************************************************

This software is part of J.-S. Caux's ABACUS library.

Copyright (c) J.-S. Caux.

-----------------------------------------------------------

File:  LiebLin_TBA_fixed_nbar.cc

Purpose:  solves the TBA equations for Lieb-Liniger

***********************************************************/

#include "ABACUS.h"

using namespace std;
using namespace ABACUS;

int main(int argc, const char* argv[])
{
  if (argc != 6) ABACUSerror("Wrong number of arguments.  Use c(best to set to 1), nbar, kBT, req_diff, Max_Secs");

  DP c_int = atof(argv[1]);
  DP nbar = atof(argv[2]);
  DP kBT = atof(argv[3]);
  DP req_diff = atof(argv[4]);
  int Max_Secs = atoi(argv[5]);

  if (c_int <= 0.0) ABACUSerror("Give a strictly positive c.");
  if (kBT <= 0.0) ABACUSerror("Negative T ?  Not for the LiebLin gas.");
  if (Max_Secs < 10) ABACUSerror("Give more time.");

  LiebLin_TBA_Solution solution = LiebLin_TBA_Solution_fixed_nbar (c_int, nbar, kBT, req_diff, Max_Secs);

  cout << solution.nbar << "\t" << solution.ebar << "\t" << solution.sbar << "\t";

  return(0);
}