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java.lang.Object gnu.math.BitOps
public class BitOps
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.
Method Summary | |
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static IntNum |
and(IntNum x,
int y)
Return the logical (bit-wise) "and" of an IntNum and an int. |
static IntNum |
and(IntNum x,
IntNum y)
Return the logical (bit-wise) "and" of two IntNums. |
static int |
bitCount(int i)
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static int |
bitCount(int[] x,
int len)
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static int |
bitCount(IntNum x)
Count one bits in an IntNum. |
static IntNum |
bitOp(int op,
IntNum x,
IntNum y)
Do one the the 16 possible bit-wise operations of two IntNums. |
static boolean |
bitValue(IntNum x,
int bitno)
Return the value of a specified bit in an IntNum. |
static IntNum |
extract(IntNum x,
int startBit,
int endBit)
Extract a bit-field as an unsigned integer. |
static IntNum |
ior(IntNum x,
IntNum y)
Return the logical (bit-wise) "(inclusive) or" of two IntNums. |
static IntNum |
not(IntNum x)
Return the logical (bit-wise) negation of an IntNum. |
static void |
setBitOp(IntNum result,
int op,
IntNum x,
IntNum y)
Do one the the 16 possible bit-wise operations of two IntNums. |
static int |
swappedOp(int op)
Return the boolean opcode (for bitOp) for swapped operands. |
static boolean |
test(IntNum x,
int y)
Return true iff an IntNum and an int have any true bits in common. |
static boolean |
test(IntNum x,
IntNum y)
Return true iff two IntNums have any true bits in common. |
static IntNum |
xor(IntNum x,
IntNum y)
Return the logical (bit-wise) "exclusive or" of two IntNums. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static boolean bitValue(IntNum x, int bitno)
public static boolean test(IntNum x, int y)
public static boolean test(IntNum x, IntNum y)
public static IntNum and(IntNum x, int y)
public static IntNum and(IntNum x, IntNum y)
public static IntNum ior(IntNum x, IntNum y)
public static IntNum xor(IntNum x, IntNum y)
public static IntNum not(IntNum x)
public static int swappedOp(int op)
public static IntNum bitOp(int op, IntNum x, IntNum y)
public static void setBitOp(IntNum result, int op, IntNum x, IntNum y)
public static IntNum extract(IntNum x, int startBit, int endBit)
public static int bitCount(int i)
public static int bitCount(int[] x, int len)
public static int bitCount(IntNum x)
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