/*
* Copyright (C) 2001-2009, CompHEP Collaboration
* Copyright (C) 1997, Alexander Pukhov 
* --------------------------------------------------
*/
#include "service2/include/chep_limits.h"
#include "service2/include/tptcmac.h"
#include "service2/include/unix_utils.h"
#include "chep_crt/include/chep_crt.h"
#include "plot/include/plot.h"

#include "out_ext.h"

#include "param.h"
#include "err_code.h"
#include "num_serv.h"


void 
paramdependence (r_func ff, char *procname, char *resultname)
{
  void *pscr0 = NULL;
  char prmname[10];
  int nprm = 0;
  double minprm, maxprm;
  int npoints;
  double memprm, stepprm;
  unsigned count;
  double f[200];

  double prmval;


  selectParam (&nprm, 54, 11, nin_ == 2, 1, 0, "Choose parameter", NULL);
  if (nprm < 0)
    return;
  vinf_ (nprm, prmname, &memprm);
  minprm = memprm;
  maxprm = minprm;

label1:

  if (!correctDouble (55, 14, "min= ", &minprm, 0))
    {
      nprm = 0;
      goto exi;
    }

label2:
  if (!correctDouble (55, 15, "max= ", &maxprm, 0))
    {
      goto_xy (55, 14);
      clr_eol ();
      goto label1;
    }
  if (maxprm <= minprm)
    {
      warnanykey (55, 17, "Range check error");
      goto_xy (55, 15);
      clr_eol ();
      goto label2;
    }

label4:npoints = 101;
  if (correctInt (55, 16, "Number of points= ", &npoints, 0))
    {
      if (npoints < 3)
	{
	  warnanykey (55, 17, "Too few points!");
	  goto label4;
	}
      if (npoints > 201)
	{
	  warnanykey (55, 17, "Too many points!");
	  goto label4;
	}
    }
  else
    {
      goto_xy (55, 15);
      clr_eol ();
      goto label2;
    }

  goto_xy (55, 14);
  clr_eol ();
  goto_xy (55, 15);
  clr_eol ();
  goto_xy (55, 16);
  clr_eol ();

  stepprm = (maxprm - minprm) / (npoints - 1);

  informline (0, npoints);

  stepprm = (maxprm - minprm) / (npoints - 1);
  prmval = minprm;
  err_code = 0;
  for (count = 1; count <= npoints; count++)
    {
      asgn_ (nprm, prmval);
      if (calcFunc ())
	err_code = 5;
      else
	f[count - 1] = ff ();
      if (err_code)
	{
	  errormessage ();
	  break;
	}
      else
	{
	  informline (count, npoints);
	  prmval += stepprm;
	}
    }

  if (err_code == 0)
    {
      scrcolor (FGmain, BGmain);
      goto_xy (1, 23);
      clr_eol ();
      plot_0 (minprm, maxprm, npoints, f, NULL, procname, prmname, resultname);
    }
  asgn_ (nprm, memprm);
  calcFunc ();
exi:
  put_text (&pscr0);
  goto_xy (1, 23);
  scrcolor (FGmain, BGmain);
  clr_eol ();
}