org.cryptimeleon.math.misc

Class BigIntegerTools

java.lang.Object

org.cryptimeleon.math.misc.BigIntegerTools

public abstract class BigIntegerTools
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
BigIntegerTools()

Method Summary

Modifier and Type	Method and Description
static java.lang.Integer	getExactInt(java.math.BigInteger num) Returns the integer value corresponding to the given BigInteger, throwing a ArithmeticException if the value is out of bounds.
static java.lang.Long	getExactLong(java.math.BigInteger num) Returns the long value corresponding to the given BigInteger, throwing a ArithmeticException if the value is out of bounds.

Methods inherited from class java.lang.Object

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

Constructor Detail

BigIntegerTools

public BigIntegerTools()

Method Detail

getExactInt

public static java.lang.Integer getExactInt(java.math.BigInteger num)

Returns the integer value corresponding to the given BigInteger, throwing a ArithmeticException if the value is out of bounds.

Implements the intValueExact method of BigInteger that is missing in the Android Sdk.

Parameters:

num - the BigInteger to convert

Returns:

the integer with the same value as num

Throws:

java.lang.ArithmeticException - if the value of num is outside the supported integer values

getExactLong

public static java.lang.Long getExactLong(java.math.BigInteger num)

Returns the long value corresponding to the given BigInteger, throwing a ArithmeticException if the value is out of bounds.

Implements the longValueExact method of BigInteger that is missing in the Android Sdk.

Parameters:

num - the BigInteger to convert

Returns:

the integer with the same value as num

Throws:

java.lang.ArithmeticException - if the value of num is outside the supported long values