SqrtInt (org.matheclipse:matheclipse-gpl 3.0.0 API)

java.lang.Object
- de.tilman_neumann.jml.roots.SqrtInt

```
public class SqrtInt
extends Object
```
Fast sqrt() computation with integer solutions using Herons (or "Babylonian") method and the built-in Math.sqrt() as initial guess.

Author:

Tilman Neumann

Constructor Summary

Constructors
Constructor Description

SqrtInt()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static BigInteger[]`	`iSqrt(BigInteger N)`	sqrt() computation with integer solutions using Herons (or "Babylonian") method and the built-in Math.sqrt() as initial guess, for any argument size and avoiding BigDecimals.
`static BigInteger[]`	`iSqrt(BigInteger n, BigInteger guess)`	Simplest Heron-type sqrt() implementation.
`static void`	`main(String[] args)`	Test.

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

- Constructor Detail
  - SqrtInt
```
public SqrtInt()
```
- Method Detail
  - iSqrt
```
public static BigInteger[] iSqrt(BigInteger N)
```
    sqrt() computation with integer solutions using Herons (or "Babylonian") method and the built-in Math.sqrt() as initial guess, for any argument size and avoiding BigDecimals.
    
    Parameters:
    
    N -
    
    Returns:
    
    [lower, upper] int values of sqrt(N)
  - iSqrt
```
public static BigInteger[] iSqrt(BigInteger n,
                                 BigInteger guess)
```
    Simplest Heron-type sqrt() implementation. Here we use guess - n/guess as convergence criterion, which is simple and correct.
    
    Parameters:
    
    n -
    
    guess - the initial guess
    
    Returns:
    
    [lower, upper] int values of sqrt(n)
  - main
```
public static void main(String[] args)
```
    Test.
    
    Parameters:
    
    args - ignored