cc.redberry.core.number

Class NumberUtils

java.lang.Object

cc.redberry.core.number.NumberUtils

public final class NumberUtils
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.math.BigInteger	TWO_BIG_INT

Method Summary

Modifier and Type	Method and Description
static Numeric	createNumeric(double d)
static Rational	createRational(org.apache.commons.math3.fraction.BigFraction fraction)
static java.math.BigInteger	factorial(int n)
static boolean	isIndeterminate(Complex complex)
static boolean	isIntegerEven(Complex complex)
static boolean	isIntegerOdd(Complex complex)
static boolean	isRealNegative(Complex complex)
static boolean	isRealNumerical(Tensor tensor)
static boolean	isSqrt(java.math.BigInteger n, java.math.BigInteger root)
static boolean	isZeroOrIndeterminate(Complex complex)
static java.math.BigInteger	pow(java.math.BigInteger base, java.math.BigInteger exponent)
static long	pow(long base, long exponent)
static java.math.BigInteger	sqrt(java.math.BigInteger n) Computes the integer square root of a number.

Methods inherited from class java.lang.Object

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

Field Detail

TWO_BIG_INT

public static java.math.BigInteger TWO_BIG_INT

Method Detail

createNumeric

public static Numeric createNumeric(double d)

createRational

public static Rational createRational(org.apache.commons.math3.fraction.BigFraction fraction)

sqrt

public static java.math.BigInteger sqrt(java.math.BigInteger n)

Computes the integer square root of a number.

Parameters:

n - The number.

Returns:

The integer square root, i.e. the largest number whose square doesn't exceed n.

isSqrt

public static boolean isSqrt(java.math.BigInteger n,
                             java.math.BigInteger root)

isIntegerOdd

public static boolean isIntegerOdd(Complex complex)

isIntegerEven

public static boolean isIntegerEven(Complex complex)

isZeroOrIndeterminate

public static boolean isZeroOrIndeterminate(Complex complex)

isIndeterminate

public static boolean isIndeterminate(Complex complex)

isRealNegative

public static boolean isRealNegative(Complex complex)

isRealNumerical

public static boolean isRealNumerical(Tensor tensor)

pow

public static java.math.BigInteger pow(java.math.BigInteger base,
                                       java.math.BigInteger exponent)

pow

public static long pow(long base,
                       long exponent)

factorial

public static java.math.BigInteger factorial(int n)