Java Doc for BitOps.java in  » Scripting » Kawa » gnu » math » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Scripting » Kawa » gnu.math   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    gnu.math.BitOps BitOps public class BitOps (Code) Implements logical (bit-wise) operations on infinite-precision integers. There are no BitOps object - all the functions here are static. The semantics used are the same as for Common Lisp. author:    Per Bothner Field Summary final static  byte[] bit4_count      Method Summary public static  IntNum and(IntNum x, int y)      Return the logical (bit-wise) "and" of an IntNum and an int. public static  IntNum and(IntNum x, IntNum y)      Return the logical (bit-wise) "and" of two IntNums. public static  int bitCount(int i)      public static  int bitCount(int[] x, int len)      public static  int bitCount(IntNum x)      Count one bits in an IntNum. If argument is negative, count zero bits instead. public static  IntNum bitOp(int op, IntNum x, IntNum y)      Do one the the 16 possible bit-wise operations of two IntNums. public static  boolean bitValue(IntNum x, int bitno)      Return the value of a specified bit in an IntNum. public static  IntNum extract(IntNum x, int startBit, int endBit)      Extract a bit-field as an unsigned integer. public static  IntNum ior(IntNum x, IntNum y)      Return the logical (bit-wise) "(inclusive) or" of two IntNums. public static  IntNum not(IntNum x)      Return the logical (bit-wise) negation of an IntNum. public static  void setBitOp(IntNum result, int op, IntNum x, IntNum y)      Do one the the 16 possible bit-wise operations of two IntNums. public static  int swappedOp(int op)      Return the boolean opcode (for bitOp) for swapped operands. I.e. public static  boolean test(IntNum x, int y)      Return true iff an IntNum and an int have any true bits in common. public static  boolean test(IntNum x, IntNum y)      Return true iff two IntNums have any true bits in common. public static  IntNum xor(IntNum x, IntNum y)      Return the logical (bit-wise) "exclusive or" of two IntNums. Field Detail bit4_count final static byte[] bit4_count(Code) Method Detail and public static IntNum and(IntNum x, int y)(Code) Return the logical (bit-wise) "and" of an IntNum and an int. and public static IntNum and(IntNum x, IntNum y)(Code) Return the logical (bit-wise) "and" of two IntNums. bitCount public static int bitCount(int i)(Code) bitCount public static int bitCount(int[] x, int len)(Code) bitCount public static int bitCount(IntNum x)(Code) Count one bits in an IntNum. If argument is negative, count zero bits instead. bitOp public static IntNum bitOp(int op, IntNum x, IntNum y)(Code) Do one the the 16 possible bit-wise operations of two IntNums. bitValue public static boolean bitValue(IntNum x, int bitno)(Code) Return the value of a specified bit in an IntNum. extract public static IntNum extract(IntNum x, int startBit, int endBit)(Code) Extract a bit-field as an unsigned integer. ior public static IntNum ior(IntNum x, IntNum y)(Code) Return the logical (bit-wise) "(inclusive) or" of two IntNums. not public static IntNum not(IntNum x)(Code) Return the logical (bit-wise) negation of an IntNum. setBitOp public static void setBitOp(IntNum result, int op, IntNum x, IntNum y)(Code) Do one the the 16 possible bit-wise operations of two IntNums. swappedOp public static int swappedOp(int op)(Code) Return the boolean opcode (for bitOp) for swapped operands. I.e. bitOp (swappedOp(op), x, y) == bitOp (op, y, x). test public static boolean test(IntNum x, int y)(Code) Return true iff an IntNum and an int have any true bits in common. test public static boolean test(IntNum x, IntNum y)(Code) Return true iff two IntNums have any true bits in common. xor public static IntNum xor(IntNum x, IntNum y)(Code) Return the logical (bit-wise) "exclusive or" of two IntNums. Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)