PowerImplementations (Jep with extensions API )

java.lang.Object

com.singularsys.extensions.field.implementations.PowerImplementations

public final class PowerImplementations extends Object

Fast static routines for calculating powers.

Since:: Jep 3.5 / Extensions 2.0
Author:: Richard Morris

Method Summary

Modifier and Type

Method

Description

static int

intpower(int l, int r)

static long

longpower(int l, int r)

static double

power(double l, double r)

static double

power(double l, int n)

A fast routine for computing integer powers.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- longpower
  
  public static long longpower(int l, int r)
- intpower
  
  public static int intpower(int l, int r)
- power
  
  public static double power(double l, double r)
- power
  
  public static double power(double l, int n)
  
  A fast routine for computing integer powers. Code adapted from efficient power by Patricia Shanahan [email protected] Almost identical to the method Knuth gives on page 462 of The Art of Computer Programming Volume 2 Seminumerical Algorithms.
  
  Parameters:
  
  l - number to be taken to a power.
  
  n - power to take x to. 0 <= n <= Integer.MAX_VALUE Negative numbers will be treated as unsigned positives.
  
  Returns:
  
  x to the power n