org.bouncycastle.util

Class Longs

java.lang.Object

org.bouncycastle.util.Longs

public class Longs
extends java.lang.Object

Utility methods and constants for longs.

Field Summary

Fields

Modifier and Type	Field and Description
static int	BYTES
static int	SIZE

Constructor Summary

Constructors

Constructor and Description
Longs()

Method Summary

Modifier and Type	Method and Description
static int	bitCount(long i)
static int	bitLength(long i)
static int	compare(long x, long y)
static int	compareUnsigned(long x, long y)
static long	divideUnsigned(long x, long y)
static long	highestOneBit(long i)
static long	lowestOneBit(long i)
static int	numberOfLeadingZeros(long i)
static int	numberOfTrailingZeros(long i)
static long	parseUnsignedLong(java.lang.String s)
static long	reverse(long i)
static long	reverseBytes(long i)
static long	rotateLeft(long i, int distance)
static long	rotateRight(long i, int distance)
static byte[]	toUnsignedByteArray(long i) Return the big-endian encoding of i taken as an unsigned 64-bit value, in the fewest octets that hold its significant bits: 0 is the empty array, 255 is FF, 256 is 01 00, and a negative argument takes all eight.
static java.lang.Long	valueOf(long value)
static void	xorTo(int len, long[] x, int xOff, long[] z, int zOff) Deprecated. Use Nat.xorTo64(int, long[], int, long[], int) instead.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BYTES

public static final int BYTES

See Also:

Constant Field Values

SIZE

public static final int SIZE

See Also:

Constant Field Values

Constructor Detail

Longs

public Longs()

Method Detail

bitCount

public static int bitCount(long i)

bitLength

public static int bitLength(long i)

compare

public static int compare(long x,
                          long y)

compareUnsigned

public static int compareUnsigned(long x,
                                  long y)

divideUnsigned

public static long divideUnsigned(long x,
                                  long y)

highestOneBit

public static long highestOneBit(long i)

lowestOneBit

public static long lowestOneBit(long i)

numberOfLeadingZeros

public static int numberOfLeadingZeros(long i)

numberOfTrailingZeros

public static int numberOfTrailingZeros(long i)

parseUnsignedLong

public static long parseUnsignedLong(java.lang.String s)

reverse

public static long reverse(long i)

reverseBytes

public static long reverseBytes(long i)

rotateLeft

public static long rotateLeft(long i,
                              int distance)

rotateRight

public static long rotateRight(long i,
                               int distance)

toUnsignedByteArray

public static byte[] toUnsignedByteArray(long i)

Return the big-endian encoding of i taken as an unsigned 64-bit value, in the fewest octets that hold its significant bits: 0 is the empty array, 255 is FF, 256 is 01 00, and a negative argument takes all eight.

valueOf

public static java.lang.Long valueOf(long value)

xorTo

@Deprecated
public static void xorTo(int len,
                                     long[] x,
                                     int xOff,
                                     long[] z,
                                     int zOff)

Deprecated. Use Nat.xorTo64(int, long[], int, long[], int) instead.