Source for java.math.RoundingMode

   1: /* RoundingMode.java -- An Enum to replace BigDecimal rounding constants.
   2:    Copyright (C) 1999, 2000, 2002, 2004, 2005  Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.math;
  40: 
  41: /**
  42:  * An enum to specify rounding behaviour for numerical operations that may
  43:  * discard precision.
  44:  * @author Anthony Balkissoon abalkiss at redhat dot com
  45:  *
  46:  */
  47: public enum RoundingMode
  48: {
  49:   UP, DOWN, CEILING, FLOOR, HALF_UP, HALF_DOWN, HALF_EVEN, UNNECESSARY;
  50: 
  51:   /**
  52:    * For compatability with Sun's JDK
  53:    */
  54:   private static final long serialVersionUID = 432302042773881265L;
  55: 
  56:   /**
  57:    * Returns the RoundingMode object corresponding to the legacy rounding modes
  58:    * in BigDecimal.
  59:    * @param rm the legacy rounding mode
  60:    * @return the corresponding RoundingMode
  61:    */
  62:   public static RoundingMode valueOf(int rm)
  63:   {
  64:     switch (rm)
  65:       {
  66:       case BigDecimal.ROUND_CEILING:
  67:         return CEILING;
  68:       case BigDecimal.ROUND_FLOOR:
  69:         return FLOOR;
  70:       case BigDecimal.ROUND_DOWN:
  71:         return DOWN;
  72:       case BigDecimal.ROUND_UP:
  73:         return UP;
  74:       case BigDecimal.ROUND_HALF_UP:
  75:         return HALF_UP;
  76:       case BigDecimal.ROUND_HALF_DOWN:
  77:         return HALF_DOWN;
  78:       case BigDecimal.ROUND_HALF_EVEN:
  79:         return HALF_EVEN;
  80:       case BigDecimal.ROUND_UNNECESSARY:
  81:         return UNNECESSARY;
  82:       default:
  83:         throw new
  84:           IllegalArgumentException("invalid argument: " + rm +
  85:                                    ".  Argument should be one of the " +
  86:                                    "rounding modes defined in BigDecimal.");
  87:       }
  88:   }
  89: }