mcs/class/corlib/System/SingleFormatter.cs

   1 //
   2 // System.SingleFormatter.cs
   3 //
   4 // Author:
   5 //   Pedro Martinez Juliá (yoros@wanadoo.es)
   6 //
   7 // Copyright (C) 2003 Pedro Martínez Juliá <yoros@wanadoo.es>
   8 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System.Globalization;
  31
  32 namespace System {
  33
  34         internal class SingleFormatter {
  35
  36                 private static FloatingPointFormatter fpf;
  37
  38                 const double p = 1000000.0d;
  39                 const double p10 = 10000000.0;
  40                 const int dec_len = 6;
  41                 const int dec_len_min = -14;
  42
  43                 const double p2 = 10000000.0d;
  44                 const double p102 = 100000000.0;
  45                 const int dec_len2 = 7;
  46                 const int dec_len_min2 = -16;
  47
  48                 public static string NumberToString (string format, NumberFormatInfo nfi, double value)
  49                 {
  50                         if (fpf == null) {
  51                                 fpf = new FloatingPointFormatter (p, p10, dec_len, dec_len_min, p2, p102, dec_len2, dec_len_min2);
  52                         }
  53                         return fpf.GetStringFrom (format, nfi, value);
  54                 }
  55         }
  56 }