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Diffstat (limited to 'libjava/classpath/java/math/MathContext.java')
| -rw-r--r-- | libjava/classpath/java/math/MathContext.java | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/libjava/classpath/java/math/MathContext.java b/libjava/classpath/java/math/MathContext.java deleted file mode 100644 index 1611495..0000000 --- a/libjava/classpath/java/math/MathContext.java +++ /dev/null @@ -1,198 +0,0 @@ -/* MathContext.java -- - Copyright (C) 1999, 2000, 2002, 2004, 2005 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath 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, or (at your option) -any later version. - -GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package java.math; - -import java.io.Serializable; - -/** - * Immutable objects describing settings such as rounding mode and digit - * precision for numerical operations such as those in the BigDecimal class. - * @author Anthony Balkissoon abalkiss at redhat dot com - * - */ -public final class MathContext implements Serializable -{ - /** A MathContext for unlimited precision arithmetic * */ - public static final MathContext UNLIMITED = - new MathContext(0, RoundingMode.HALF_UP); - - /** - * A MathContext for the IEEE 754R Decimal32 format - 7 digit preicision and - * HALF_EVEN rounding. - */ - public static final MathContext DECIMAL32 = - new MathContext(7, RoundingMode.HALF_EVEN); - - /** - * A MathContext for the IEEE 754R Decimal64 format - 16 digit preicision and - * HALF_EVEN rounding. - */ - public static final MathContext DECIMAL64 = - new MathContext(16, RoundingMode.HALF_EVEN); - - /** - * A MathContext for the IEEE 754R Decimal128 format - 34 digit preicision and - * HALF_EVEN rounding. - */ - public static final MathContext DECIMAL128 = - new MathContext(34, RoundingMode.HALF_EVEN); - - /** - * This is the serialVersionUID reported here: - * java.sun.com/j2se/1.5.0/docs/api/serialized-form.html#java.math.MathContext - */ - private static final long serialVersionUID = 5579720004786848255L; - - private int precision; - - private RoundingMode roundMode; - - /** - * Constructs a new MathContext with the specified precision and with HALF_UP - * rounding. - * @param setPrecision the precision for the new MathContext - * - * @throws IllegalArgumentException if precision is < 0. - */ - public MathContext(int setPrecision) - { - this(setPrecision, RoundingMode.HALF_UP); - } - - /** - * Constructs a new MathContext with the specified precision and rounding - * mode. - * @param setPrecision the precision - * @param setRoundingMode the rounding mode - * - * @throws IllegalArgumentException if precision is < 0. - */ - public MathContext(int setPrecision, RoundingMode setRoundingMode) - { - if (setPrecision < 0) - throw new IllegalArgumentException("Precision cannot be less than zero."); - precision = setPrecision; - roundMode = setRoundingMode; - } - - /** - * Constructs a MathContext from a String that has the same form as one - * produced by the toString() method. - * @param val - * - * @throws IllegalArgumentException if the String is not in the correct - * format or if the precision specified is < 0. - */ - public MathContext(String val) - { - try - { - int roundingModeIndex = val.indexOf("roundingMode", 10); - precision = Integer.parseInt(val.substring(10, roundingModeIndex - 1)); - roundMode = RoundingMode.valueOf(val.substring(roundingModeIndex + 13)); - } - catch (NumberFormatException nfe) - { - throw new IllegalArgumentException("String not in correct format"); - } - catch (IllegalArgumentException iae) - { - throw new IllegalArgumentException("String not in correct format"); - } - if (precision < 0) - throw new IllegalArgumentException("Precision cannot be less than 0."); - } - - /** - * Returns true if x is a MathContext and has the same precision setting - * and rounding mode as this MathContext. - * - * @return true if the above conditions hold - */ - public boolean equals(Object x) - { - if (!(x instanceof MathContext)) - return false; - MathContext mc = (MathContext)x; - return mc.precision == this.precision - && mc.roundMode.equals(this.roundMode); - } - - /** - * Returns the precision setting. - * @return the precision setting. - */ - public int getPrecision() - { - return precision; - } - - /** - * Returns the rounding mode setting. This will be one of - * RoundingMode.CEILING, RoundingMode.DOWN, RoundingMode.FLOOR, - * RoundingMode.HALF_DOWN, RoundingMode.HALF_EVEN, RoundingMode.HALF_UP, - * RoundingMode.UNNECESSARY, or RoundingMode.UP. - * @return the rounding mode setting. - */ - public RoundingMode getRoundingMode() - { - return roundMode; - } - - /** - * Returns "precision=p roundingMode=MODE" where p is an int giving the - * precision and MODE is UP, DOWN, HALF_UP, HALF_DOWN, HALF_EVEN, CEILING, - * FLOOR, or UNNECESSARY corresponding to rounding modes. - * - * @return a String describing this MathContext - */ - public String toString() - { - return "precision="+precision+" roundingMode="+roundMode; - } - - /** - * Returns the hashcode for this MathContext. - * @return the hashcode for this MathContext. - */ - public int hashCode() - { - return precision ^ roundMode.hashCode(); - } -} |
