2006-03-01 Anthony Balkissoon <abalkiss@redhat.com>

	* java/math/BigDecimal.java:
	(precision): Fixed overflow problem with large numbers.
	(longValueExact): New method.
	(intValueExact): Likewise.
	(byteValueExact): Likewise.
	(shortValueExact): Likewise.

2006-03-01  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java:
	(remainder(BigDecimal)): New method.
	(divideAndRemainder(BigDecimal)): Likewise.
	(divideToIntegralValue(BigDecimal)): Likewise.
	(floor): New implementation method.

2006-02-28  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java:
	(divide(BigDecimal, int, RoundingMode)): New method.
	(divide(BigDecimal, RoundingMode)): Likewise.
	(divide(BigDecimal, int, int)): Removed incorrect throwing of exception
	when the new scale is < 0.
	(setScale(int, RoundingMode)): New method.
	(ulp): Likewise.

2006-02-27  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java: Replaced occurences of BigInteger.valueOf
	with BigInteger.ZERO, BigInteger.ONE, BigInteger.TEN where appropriate.
	(add(BigDecimal, MathContext)): New method.
	(subtract(BigDecimal, MathContext)): Likewise.
	(precision): Fixed to correctly handle BigIntegers with more than 19
	digits.
	(pow(int, MathContext)): New method.

2006-02-27  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java: Added @throws clause to constructors.
	(mathContext): Removed this unneeded field.
	(BigDecimal(int, MathContext)): New constructor.
	(BigDecimal(BigInteger, int, MathContext)): Likewise.
	(multiply(BigDecimal, MathContext)): New method.
	(negate(MathContext)): Likewise.
	(plus(MathContext)): Likewise.
	(numDigitsInLong): Fixed to properly handle negatives.

2006-02-24  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java:
	(BigDecimal(long, MathContext)): New constructor.
	(BigDecimal(BigInteger, MathContext)): Likewise.
	(BigDecimal(String, MathContext)): Likewise.
	(BigDecimal(double, MathContext)): Likewise.
	(round): Fixed a typo where the precision field was used instead of a
	call to the precision method, and also store the new precision in the
	returned BigDecimal.
	(abs(MathContext)): New method.

2006-02-24  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java
	(toBigInteger): Fixed problem where this method couldn't handle
	negative values for scale.
	(toBigIntegerExact): New method.
	(stripTrailingZeros): Likewise.

2006-02-23  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java:
	(toString): Fixed a problem where the negative sign was being displayed
	twice in the exponent.
	(toEngineeringString): New method.
	(toPlainString): Likewise.
	(pow): Likewise.

2006-02-23  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java:
	(toString): Rewrote this method to behave as specified.  Added API
	comments to explain behaviour.
	(scaleByPowerOfTen): New method.

2006-02-22  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java:
	(BigDecimal(char[], int, int, MathContext)): New constructor.
	(BigDecimal(char[], MathContext)): Likewise.
	(BigDecimal(char[])): Likewise.
	(BigDecimal(char[], int, int)): Likewise.
	(BigDecimal(String)): Fixed handling of exponent and scale.

2006-02-21  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/BigDecimal.java:
	(mathContext): New field.
	(precision): Likewise.
	(BigDecimal(int)): New constructor.
	(BigDecimal(long)): Likewise.
	(BigDecimal(BigInteger)): Added API docs.
	(BigDecimal(BigInteger, int)): Removed incorrect NumberFormatException
	and added API docs.
	(plus): New method.
	(round): Likewise.
	(precision): Likewise.
	(valueOf): Likewise.
	(numDigitsInLong): New implementation method.

2006-02-21  Anthony Balkissoon  <abalkiss@redhat.com>

	* java/math/MathContext.java: New class.

1 files changed, 144 insertions, 0 deletions

diff --git a/java/math/MathContext.java b/java/math/MathContext.java
new file mode 100644
index 000000000..417d9c2e2
--- /dev/null
+++ b/java/math/MathContext.java
@@ -0,0 +1,144 @@
+/* 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
+{
+  
+  /**
+   * 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;
+    
+  /**
+   * 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)
+  {
+    if (setPrecision < 0)
+      throw new IllegalArgumentException("Precision cannot be less than zero.");
+    precision = setPrecision;
+  }
+    
+  /**
+   * 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));
+    }
+    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;
+  }
+  
+  /**
+   * Returns the precision setting.
+   * @return the precision setting.
+   */
+  public int getPrecision()
+  {
+    return precision;
+  }
+  
+  /**
+   * 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;
+  }
+  
+  /**
+   * Returns the hashcode for this MathContext.
+   * @return the hashcode for this MathContext.
+   */
+  public int hashCode()
+  {
+    return precision;
+  }
+}