DoubleBits (JTS Topology Suite 1.15.0 API)

java.lang.Object
- org.locationtech.jts.index.quadtree.DoubleBits

```
public class DoubleBits
extends Object
```
DoubleBits manipulates Double numbers by using bit manipulation and bit-field extraction. For some operations (such as determining the exponent) this is more accurate than using mathematical operations (which suffer from round-off error).
The algorithms and constants in this class apply only to IEEE-754 double-precision floating point format.

Version:

1.7

Field Summary

Fields
Modifier and Type Field and Description

static int EXPONENT_BIAS

Fields
Modifier and Type	Field and Description
`static int`	`EXPONENT_BIAS`

Constructor Summary

Constructors
Constructor and Description

DoubleBits(double x)

Constructors
Constructor and Description
`DoubleBits(double x)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`biasedExponent()` Determines the exponent for the number
`static int`	`exponent(double d)`
`int`	`getBit(int i)`
`double`	`getDouble()`
`int`	`getExponent()` Determines the exponent for the number
`static double`	`maximumCommonMantissa(double d1, double d2)`
`int`	`numCommonMantissaBits(DoubleBits db)` This computes the number of common most-significant bits in the mantissa.
`static double`	`powerOf2(int exp)`
`static String`	`toBinaryString(double d)`
`String`	`toString()` A representation of the Double bits formatted for easy readability
`static double`	`truncateToPowerOfTwo(double d)`
`void`	`zeroLowerBits(int nBits)`

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

- Field Detail
  - EXPONENT_BIAS
```
public static final int EXPONENT_BIAS
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - DoubleBits
```
public DoubleBits(double x)
```
- Method Detail
  - powerOf2
```
public static double powerOf2(int exp)
```
  - exponent
```
public static int exponent(double d)
```
  - truncateToPowerOfTwo
```
public static double truncateToPowerOfTwo(double d)
```
  - toBinaryString
```
public static String toBinaryString(double d)
```
  - maximumCommonMantissa
```
public static double maximumCommonMantissa(double d1,
                                           double d2)
```
  - getDouble
```
public double getDouble()
```
  - biasedExponent
```
public int biasedExponent()
```
    Determines the exponent for the number
  - getExponent
```
public int getExponent()
```
    Determines the exponent for the number
  - zeroLowerBits
```
public void zeroLowerBits(int nBits)
```
  - getBit
```
public int getBit(int i)
```
  - numCommonMantissaBits
```
public int numCommonMantissaBits(DoubleBits db)
```
    This computes the number of common most-significant bits in the mantissa. It does not count the hidden bit, which is always 1. It does not determine whether the numbers have the same exponent - if they do not, the value computed by this function is meaningless.
    
    Parameters:
    
    db -
    
    Returns:
    
    the number of common most-significant mantissa bits
  - toString
```
public String toString()
```
    A representation of the Double bits formatted for easy readability
    
    Overrides:
    
    toString in class Object

Class DoubleBits

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

EXPONENT_BIAS

Constructor Detail

DoubleBits

Method Detail

powerOf2

exponent

truncateToPowerOfTwo

toBinaryString

maximumCommonMantissa

getDouble

biasedExponent

getExponent

zeroLowerBits

getBit

numCommonMantissaBits

toString