Merge commit 'upstream/4.6.1'

[debian/atlc] / src / check_error.c

diff --git a/src/check_error.c b/src/check_error.c
new file mode 100644 (file)
index 0000000..ae9472c
--- /dev/null
+++ b/src/check_error.c
@@ -0,0 +1,67 @@
+/* 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 gmail.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"
+#include "exit_codes.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 */
+
+
+
+/* This function checks to see if the errors on the grid are too large.
+A problem occurs if a number was zero, so this needs to be carefullly
+controlled. */
+
+void check_error(double user, int create_bmp_for_rect_in_rect, double gridsize, const char *name)
+{
+   double fractional_error;
+   fractional_error=fabs((user-(create_bmp_for_rect_in_rect*gridsize))/user);
+   if(user > 0)
+   {
+      if(fractional_error > UNACCEPTABLE_ERROR)
+      {
+         fprintf(stderr,"Error #14. Unacceptable %f%% error in representing %s on the grid\n", fractional_error*100.0, name);
+        fprintf(stderr,"Try increasing the bitmap size with the -b option\n");
+        exit_with_msg_and_exit_code("exiting ...",UNACCEPTABLE_ERROR_WHEN_CONVERTING_TO_INTEGERS);
+      }
+      else if(fractional_error > ACCEPTABLE_ERROR)
+         fprintf(stderr,"*WARNING*  %f%% error in representing %s on the grid\n", fractional_error*100.0, name);
+   }
+}