001 /* RoundingMode.java -- An Enum to replace BigDecimal rounding constants.
002 Copyright (C) 1999, 2000, 2002, 2004, 2005 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
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007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
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019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
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024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
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036 exception statement from your version. */
037
038
039 package java.math;
040
041 /**
042 * An enum to specify rounding behaviour for numerical operations that may
043 * discard precision.
044 * @author Anthony Balkissoon abalkiss at redhat dot com
045 *
046 */
047 public enum RoundingMode
048 {
049 UP, DOWN, CEILING, FLOOR, HALF_UP, HALF_DOWN, HALF_EVEN, UNNECESSARY;
050
051 /**
052 * For compatability with Sun's JDK
053 */
054 private static final long serialVersionUID = 432302042773881265L;
055
056 /**
057 * Returns the RoundingMode object corresponding to the legacy rounding modes
058 * in BigDecimal.
059 * @param rm the legacy rounding mode
060 * @return the corresponding RoundingMode
061 */
062 public static RoundingMode valueOf(int rm)
063 {
064 switch (rm)
065 {
066 case BigDecimal.ROUND_CEILING:
067 return CEILING;
068 case BigDecimal.ROUND_FLOOR:
069 return FLOOR;
070 case BigDecimal.ROUND_DOWN:
071 return DOWN;
072 case BigDecimal.ROUND_UP:
073 return UP;
074 case BigDecimal.ROUND_HALF_UP:
075 return HALF_UP;
076 case BigDecimal.ROUND_HALF_DOWN:
077 return HALF_DOWN;
078 case BigDecimal.ROUND_HALF_EVEN:
079 return HALF_EVEN;
080 case BigDecimal.ROUND_UNNECESSARY:
081 return UNNECESSARY;
082 default:
083 throw new
084 IllegalArgumentException("invalid argument: " + rm +
085 ". Argument should be one of the " +
086 "rounding modes defined in BigDecimal.");
087 }
088 }
089 }