com.alibaba.fastjson2.util

Class FDBigInteger

java.lang.Object

com.alibaba.fastjson2.util.FDBigInteger

public final class FDBigInteger
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
private int[]	data
private boolean	immutable
private int	nWords
private int	offset
private static FDBigInteger[]	POW_5_CACHE
private static int[]	SMALL_5_POW

Constructor Summary

Constructors

Modifier	Constructor and Description
private	FDBigInteger(int[] data, int offset)
	FDBigInteger(long lValue, byte[] digits, int kDigits, int nDigits)

Method Summary

Modifier and Type	Method and Description
private static FDBigInteger	big5pow(int p)
private static FDBigInteger	big5powRec(int p)
private static int	checkZeroTail(int[] a, int from)
int	cmp(FDBigInteger other)
int	cmpPow52(int p5, int p2)
FDBigInteger	leftInplaceSub(FDBigInteger subtrahend)
FDBigInteger	leftShift(int shift)
private static void	leftShift(int[] src, int idx, int[] result, int bitcount, int anticount, int prev)
void	makeImmutable()
private FDBigInteger	mult(FDBigInteger other)
private FDBigInteger	mult(int i)
private static void	mult(int[] s1, int s1Len, int[] s2, int s2Len, int[] dst)
private static void	mult(int[] src, int srcLen, int value, int[] dst)
private static void	mult(int[] src, int srcLen, int v0, int v1, int[] dst)
private void	multAddMe(int iv, int addend)
FDBigInteger	multByPow52(int p5, int p2)
FDBigInteger	rightInplaceSub(FDBigInteger subtrahend)
private int	size()
private void	trimLeadingZeros()
static FDBigInteger	valueOfMulPow52(long value, int p5, int p2)

Methods inherited from class java.lang.Object

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

Field Detail

SMALL_5_POW

private static final int[] SMALL_5_POW

POW_5_CACHE

private static final FDBigInteger[] POW_5_CACHE

data

private int[] data

offset

private int offset

nWords

private int nWords

immutable

private boolean immutable

Constructor Detail

FDBigInteger

private FDBigInteger(int[] data,
                     int offset)

FDBigInteger

public FDBigInteger(long lValue,
                    byte[] digits,
                    int kDigits,
                    int nDigits)

Method Detail

makeImmutable

public void makeImmutable()

multAddMe

private void multAddMe(int iv,
                       int addend)

trimLeadingZeros

private void trimLeadingZeros()

size

private int size()

multByPow52

public FDBigInteger multByPow52(int p5,
                                int p2)

big5pow

private static FDBigInteger big5pow(int p)

mult

private FDBigInteger mult(int i)

mult

private FDBigInteger mult(FDBigInteger other)

mult

private static void mult(int[] src,
                         int srcLen,
                         int value,
                         int[] dst)

mult

private static void mult(int[] s1,
                         int s1Len,
                         int[] s2,
                         int s2Len,
                         int[] dst)

mult

private static void mult(int[] src,
                         int srcLen,
                         int v0,
                         int v1,
                         int[] dst)

leftShift

private static void leftShift(int[] src,
                              int idx,
                              int[] result,
                              int bitcount,
                              int anticount,
                              int prev)

leftShift

public FDBigInteger leftShift(int shift)

big5powRec

private static FDBigInteger big5powRec(int p)

valueOfMulPow52

public static FDBigInteger valueOfMulPow52(long value,
                                           int p5,
                                           int p2)

cmp

public int cmp(FDBigInteger other)

checkZeroTail

private static int checkZeroTail(int[] a,
                                 int from)

leftInplaceSub

public FDBigInteger leftInplaceSub(FDBigInteger subtrahend)

rightInplaceSub

public FDBigInteger rightInplaceSub(FDBigInteger subtrahend)

cmpPow52

public int cmpPow52(int p5,
                    int p2)