Package org.apache.commons.math3.util

Class FastMath.Split

java.lang.Object

org.apache.commons.math3.util.FastMath.Split

Enclosing class:

FastMath

private static class FastMath.Split
extends java.lang.Object

Class operator on double numbers split into one 26 bits number and one 27 bits number.

Field Summary

Fields

Modifier and Type	Field	Description
private double	full	Full number.
private double	high	High order bits.
private double	low	Low order bits.
static FastMath.Split	NAN	Split version of NaN.
static FastMath.Split	NEGATIVE_INFINITY	Split version of negative infinity.
static FastMath.Split	POSITIVE_INFINITY	Split version of positive infinity.

Constructor Summary

Constructors

Constructor	Description
Split(double x)	Simple constructor.
Split(double high, double low)	Simple constructor.
Split(double full, double high, double low)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
FastMath.Split	multiply(FastMath.Split b)	Multiply the instance by another one.
private FastMath.Split	pow(long e)	Computes this^e.
FastMath.Split	reciprocal()	Compute the reciprocal of the instance.

Methods inherited from class java.lang.Object

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

Field Detail

NAN

public static final FastMath.Split NAN

Split version of NaN.

POSITIVE_INFINITY

public static final FastMath.Split POSITIVE_INFINITY

Split version of positive infinity.

NEGATIVE_INFINITY

public static final FastMath.Split NEGATIVE_INFINITY

Split version of negative infinity.

full

private final double full

Full number.

high

private final double high

High order bits.

low

private final double low

Low order bits.

Constructor Detail

Split

Split(double x)

Simple constructor.

Parameters:

x - number to split

Split

Split(double high,
      double low)

Simple constructor.

Parameters:

high - high order bits

low - low order bits

Split

Split(double full,
      double high,
      double low)

Simple constructor.

Parameters:

full - full number

high - high order bits

low - low order bits

Method Detail

multiply

public FastMath.Split multiply(FastMath.Split b)

Multiply the instance by another one.

Parameters:

b - other instance to multiply by

Returns:

product

reciprocal

public FastMath.Split reciprocal()

Compute the reciprocal of the instance.

Returns:

reciprocal of the instance

pow

private FastMath.Split pow(long e)

Computes this^e.

Parameters:

e - exponent (beware, here it MUST be > 0; the only exclusion is Long.MIN_VALUE)

Returns:

d^e, split in high and low bits

Since:

3.6