GenericGF

java.lang.Object
- com.google.zxing.common.reedsolomon.GenericGF

```
public final class GenericGF
extends java.lang.Object
```
This class contains utility methods for performing mathematical operations over the Galois Fields. Operations use a given primitive polynomial in calculations.

Throughout this package, elements of the GF are represented as an int for convenience and speed (but at the cost of memory).

Field Summary

Fields
Modifier and Type	Field	Description
`static GenericGF`	`AZTEC_DATA_10`
`static GenericGF`	`AZTEC_DATA_12`
`static GenericGF`	`AZTEC_DATA_6`
`static GenericGF`	`AZTEC_DATA_8`
`static GenericGF`	`AZTEC_PARAM`
`static GenericGF`	`DATA_MATRIX_FIELD_256`
`static GenericGF`	`MAXICODE_FIELD_64`
`static GenericGF`	`QR_CODE_FIELD_256`

Constructor Summary

Constructors
Constructor Description

GenericGF(int primitive, int size, int b)
Create a representation of GF(size) using the given primitive polynomial.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

int getGeneratorBase()

int getSize()

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

- Field Detail
  - AZTEC_DATA_12
```
public static final GenericGF AZTEC_DATA_12
```
  - AZTEC_DATA_10
```
public static final GenericGF AZTEC_DATA_10
```
  - AZTEC_DATA_6
```
public static final GenericGF AZTEC_DATA_6
```
  - AZTEC_PARAM
```
public static final GenericGF AZTEC_PARAM
```
  - QR_CODE_FIELD_256
```
public static final GenericGF QR_CODE_FIELD_256
```
  - DATA_MATRIX_FIELD_256
```
public static final GenericGF DATA_MATRIX_FIELD_256
```
  - AZTEC_DATA_8
```
public static final GenericGF AZTEC_DATA_8
```
  - MAXICODE_FIELD_64
```
public static final GenericGF MAXICODE_FIELD_64
```
- Constructor Detail
  - GenericGF
```
public GenericGF(int primitive,
                 int size,
                 int b)
```
    Create a representation of GF(size) using the given primitive polynomial.
    
    Parameters:
    
    primitive - irreducible polynomial whose coefficients are represented by the bits of an int, where the least-significant bit represents the constant coefficient
    
    size - the size of the field
    
    b - the factor b in the generator polynomial can be 0- or 1-based (g(x) = (x+a^b)(x+a^(b+1))...(x+a^(b+2t-1))). In most cases it should be 1, but for QR code it is 0.
- Method Detail
  - getSize
```
public int getSize()
```
  - getGeneratorBase
```
public int getGeneratorBase()
```
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object