+++ /dev/null
-/* atlc - arbitrary transmission line calculator, for the analysis of
-transmission lines are directional couplers.
-
-Copyright (C) 2002. Dr. David Kirkby, PhD (G8WRB).
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-as published by the Free Software Foundation; either package_version 2
-of the License, or (at your option) any later package_version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-USA.
-
-Dr. David Kirkby, e-mail drkirkby at ntlworld.com
-
-*/
-
-#include "config.h"
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#include "definitions.h"
-
-/* names, colours and Ers are all arrays of 10. It would be better they were
-in a structure as they are all linked closely, but they are not and I
-can't be bothered to change it */
-
-extern double DD, dd, hh, Er1;
-extern int D, d, h, W, H;
-extern int lowest;
-extern int highest;
-extern int verbose;
-
-void convert_create_bmp_for_circ_in_circ_dimensions_to_integers(int accuracy_level)
-{
- int best_D=-1, best_d=-1, best_h=-1;
- int min, max;
- int i;
- double max_gridsize, min_gridsize;
- double error, error_min=VERY_LARGE, gridsize, best_grid_size=-1;
-
- /* scale grid size, according to a command line option */
- lowest*=(int) 0.5+sqrt(pow(2.0,(double)accuracy_level));
- highest*=(int) 0.5+sqrt(pow(2.0,(double)accuracy_level));
-
- max_gridsize=DD/lowest; /* minimum dimension in m */
- min_gridsize=DD/highest;
- min=DD/max_gridsize;
- max=DD/min_gridsize;
- for(i=min;i<=max;++i)
- {
- /* Try various combinations for D,d,o */
- gridsize=DD/i;
- D=(int)(DD/gridsize + 0.5);
- d=(int)(dd/gridsize + 0.5);
- h=(int)(hh/gridsize + 0.5);
- error=0.0;
- error+=pow((DD-D*gridsize)/DD,2.0);
- error+=pow((dd-d*gridsize)/dd,2.0);
- if(h>0)
- error+=pow((hh-h*gridsize)/hh,2.0);
- if(error < (error_min-TINY))
- {
- error_min=error;
- best_D=D;
- best_d=d;
- best_h=h;
- best_grid_size=gridsize;
- }
- }
- D=W=H=best_D;
- d=best_d;
- h=best_h;
- if(verbose==TRUE)
- {
- fprintf(stderr,"error_min=%.16f\n",error_min);
- fprintf(stderr,"User requested: DD=%f dd=%f hh=%f Er1=%f\n\n",DD,dd,hh,Er1);
- fprintf(stderr,"Internally the program is using the following grid:\n");
- fprintf(stderr,"D=%d d=%d h=%d \nThe grid size is %f mm, inches or whatever\n\n", D,d,h,best_grid_size);
- if(error_min > TINY)
- {
- fprintf(stderr,"This means we are simulating a transmission line with these dimensions:\n");
- fprintf(stderr,"D=%f d=%f h=%f (mm, inches or whatever)\n",D*best_grid_size,d*best_grid_size,h*best_grid_size);
- fprintf(stderr,"\nThese are slightly different to what you indicated on the command line,\n");
- fprintf(stderr,"but they are the best approximation possible, given the grid size\n");
- }
- }
- check_error(DD,D,best_grid_size,"D");
- check_error(dd,d,best_grid_size,"d");
- if(h > 0.0)
- check_error(hh,h,best_grid_size,"h");
-}
-