2007-05-24 Roman Kennke <roman@kennke.org>

	* gnu/java/math/Fixed.java
	(trunc): New method.

2 files changed, 18 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index c6cd0fbb9..28678c36d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2007-05-24  Roman Kennke  <roman@kennke.org>
 
+	* gnu/java/math/Fixed.java
+	(trunc): New method.
+
+2007-05-24  Roman Kennke  <roman@kennke.org>
+
 	* gnu/java/awt/java2d/AbstractGraphics2D.java
 	(fillShape): Pass rendering hints to scanline converter.
 	* gnu/java/awt/java2d/ScanlineConverter.java
diff --git a/gnu/java/math/Fixed.java b/gnu/java/math/Fixed.java
index e0284c329..ed4150b10 100644
--- a/gnu/java/math/Fixed.java
+++ b/gnu/java/math/Fixed.java
@@ -109,6 +109,19 @@ public final class Fixed
   }
 
   /**
+   * Truncates the number so that only the digits after the point are left.
+   *
+   * @param n the number of digits
+   * @param a the fixed point value
+   *
+   * @return the truncated value
+   */
+  public static int trunc(int n, int a)
+  {
+    return a & (0xFFFFFFFF >>> 32 - n);
+  }
+
+  /**
    * Returns the round value of a fixed point value <code>a</code> with
    * the <code>n</code> digits.
    *