order.c

来自「a full 3D simulation of electromagnetic 」· C语言 代码 · 共 40 行

/* Copyright notice:
   radarFDTD - A free 3D-FDTD simulation for EM-waves with GPML-ABCs ;-)
   Copyright (C) 2000 Carsten Aulbert
   ( 
   I used the following program as a 'manual', so in my opinion this needs to be quoted:
   ToyFDTD, version 1.02 
   The if-I-can-do-it-you-can-do-it FDTD! 
   Copyright (C) 1998,1999 Laurie E. Miller, Paul Hayes, Matthew O'Keefe 
   )

    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 version 2 of the License, or
    (at your option) any later 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
*/

void PrintCorrectOrder(PRECISION number, FILE *output)
{
  int order = (int) log(number) / log(10) - 0.5;
  
  switch(order){
  case -15: fprintf(output, "%5.2f f", number*1.0e+15);break;
  case -14: fprintf(output, "%5.2f f", number*1.0e+15);break;
  case -13: fprintf(output, "%5.2f f", number*1.0e+15);break;
  case -12: fprintf(output, "%5.2f p", number*1.0e+12);break;
  case -11: fprintf(output, "%5.2f p", number*1.0e+12);break;
  case -10: fprintf(output, "%5.2f p", number*1.0e+12);break;
  case -9: fprintf(output, "%5.2f n", number*1.0e+9);break;
  case -8: fprintf(output, "%5.2f n", number*1.0e+9);break;
  case -7: fprintf(output, "%5.2f n", number*1.0e+9);break;
  case -6: fprintf(output, "%5.2f