Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.procore / src / org / simantics / db / procore / cluster / BitUtility.java

diff --git a/bundles/org.simantics.db.procore/src/org/simantics/db/procore/cluster/BitUtility.java b/bundles/org.simantics.db.procore/src/org/simantics/db/procore/cluster/BitUtility.java
new file mode 100644 (file)
index 0000000..8e47ae8
--- /dev/null
+++ b/bundles/org.simantics.db.procore/src/org/simantics/db/procore/cluster/BitUtility.java
@@ -0,0 +1,58 @@
+package org.simantics.db.procore.cluster;\r
+\r
+final class BitUtility {\r
+       static final long LongBits = 64;\r
+       static final int IntBits = 32;\r
+    static final short ShortBits = 16;\r
+    static final long ClearHighIntMask = (1L << IntBits) - 1;\r
+    static final long ClearLowIntMask = -1l ^ ClearHighIntMask;\r
+    static final long ClearHighShortMask = (1L << ShortBits) - 1;\r
+    static final long ClearLowShortMask  = -1L ^ ClearHighShortMask;\r
+\r
+    static final int getHighInt(long longValue) {\r
+        return (int) (longValue >>> IntBits);\r
+    }\r
+\r
+    static final long setHighInt(long longValue, int highValue) {\r
+        longValue = (longValue & ClearHighIntMask) | (long) highValue << IntBits;\r
+        return longValue;\r
+    }\r
+\r
+    static final int getLowInt(long longValue) {\r
+        return (int) longValue;\r
+    }\r
+\r
+    static final long setLowInt(long longValue, int lowValue) {\r
+        longValue = (longValue & ClearLowIntMask) | lowValue;\r
+        return longValue;\r
+    }\r
+\r
+    static final long setLowAndHighInt(long longValue, int lowValue, int highValue) {\r
+        longValue = ((long) lowValue & ClearHighIntMask) | ((long) highValue << IntBits);\r
+        return longValue;\r
+    }\r
+\r
+    static final short getLowShort(long longValue) {\r
+        return (short)longValue;\r
+    }\r
+\r
+    static final long setLowShort(long longValue, short lowValue) {\r
+        longValue = (longValue & ClearLowShortMask) | (lowValue & ClearHighShortMask);\r
+        return longValue;\r
+    }\r
+\r
+    static final int getMiddle(final long longValue, final int skip, final int size) {\r
+        return (int)(longValue >>> skip) & (1<<size)-1;\r
+    }\r
+\r
+    static final long setMiddle(long longValue, final int skip, final int size, int value) {\r
+       long a1 = (1L<<size)-1;\r
+       long m1 = (a1 << skip);\r
+       long mask = -1L ^ m1;\r
+       long t1 = (value & a1) << skip;\r
+       long t2 = longValue & mask;\r
+        long t3 = t2 | t1;\r
+        return t3;\r
+    }\r
+\r
+}\r