java.math
Class Conversion

java.lang.Object
  java.math.Conversion

 class Conversion
extends Object

Static library that provides BigInteger base conversion from/to any integer represented in an String Object.

Field Summary

(package private) static int[]	bigRadices bigRadices values are precomputed maximal powers of radices (integer numbers from 2 to 36) that fit into unsigned int (32 bits).
(package private) static int[]	digitFitInInt Holds the maximal exponent for each radix, so that radixdigitFitInInt[radix] fit in an int (32 bits).

Method Summary

(package private) static double	bigInteger2Double(BigInteger val)
(package private) static String	bigInteger2String(BigInteger val, int radix)
(package private) static long	divideLongByBillion(long a)
(package private) static String	toDecimalScaledString(BigInteger val, int scale) Builds the correspondent String representation of val being scaled by scale.
(package private) static String	toDecimalScaledString(long value, int scale)

Methods inherited from class java.lang.Object

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

Field Detail

digitFitInInt

static final int[] digitFitInInt

Holds the maximal exponent for each radix, so that radix^{digitFitInInt[radix]} fit in an int (32 bits).

bigRadices

static final int[] bigRadices

bigRadices values are precomputed maximal powers of radices (integer numbers from 2 to 36) that fit into unsigned int (32 bits). bigRadices[0] = 2 ^ 31, bigRadices[8] = 10 ^ 9, etc.

Method Detail

bigInteger2String

static String bigInteger2String(BigInteger val,
                                int radix)

See Also:

BigInteger.toString(int)

toDecimalScaledString

static String toDecimalScaledString(BigInteger val,
                                    int scale)

Builds the correspondent String representation of val being scaled by scale.

See Also:

BigInteger.toString(), BigDecimal.toString()

toDecimalScaledString

static String toDecimalScaledString(long value,
                                    int scale)

divideLongByBillion

static long divideLongByBillion(long a)

bigInteger2Double

static double bigInteger2Double(BigInteger val)

See Also:

BigInteger.doubleValue()