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-rw-r--r--libjava/gnu/gcj/awt/BitMaskExtent.java51
1 files changed, 0 insertions, 51 deletions
diff --git a/libjava/gnu/gcj/awt/BitMaskExtent.java b/libjava/gnu/gcj/awt/BitMaskExtent.java
deleted file mode 100644
index 884ab502dc9..00000000000
--- a/libjava/gnu/gcj/awt/BitMaskExtent.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/* Copyright (C) 2000 Free Software Foundation
-
- This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
-details. */
-
-package gnu.gcj.awt;
-
-/**
- * Simple transparent utility class that can be used to perform bit
- * mask extent calculations.
- */
-public final class BitMaskExtent
-{
- /** The number of the least significant bit of the bit mask extent. */
- public byte leastSignificantBit;
-
- /** The number of bits in the bit mask extent. */
- public byte bitWidth;
-
- /**
- * Set the bit mask. This will calculate and set the leastSignificantBit
- * and bitWidth fields.
- *
- * @see #leastSignificantBit
- * @see #bitWidth
- */
- public void setMask(long mask)
- {
- leastSignificantBit = 0;
- bitWidth = 0;
- if (mask == 0) return;
- long shiftMask = mask;
- for (; (shiftMask&1) == 0; shiftMask >>>=1) leastSignificantBit++;
- for (; (shiftMask&1) != 0; shiftMask >>>=1) bitWidth++;
-
- if (shiftMask != 0)
- throw new IllegalArgumentException("mask must be continuous");
- }
-
- /**
- * Calculate the bit mask based on the values of the
- * leastSignificantBit and bitWidth fields.
- */
- public long toMask()
- {
- return ((1<<bitWidth)-1) << leastSignificantBit;
- }
-}
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