Package com.google.zxing.pdf417.decoder.ec

Class ModulusGF

java.lang.Object

com.google.zxing.pdf417.decoder.ec.ModulusGF

public final class ModulusGF
extends java.lang.Object

A field based on powers of a generator integer, modulo some modulus.

See Also:

GenericGF

Field Summary

Fields

Modifier and Type	Field	Description
private int[]	expTable
private int[]	logTable
private int	modulus
private ModulusPoly	one
static ModulusGF	PDF417_GF
private ModulusPoly	zero

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ModulusGF(int modulus, int generator)

Method Summary

Modifier and Type	Method	Description
(package private) int	add(int a, int b)
(package private) ModulusPoly	buildMonomial(int degree, int coefficient)
(package private) int	exp(int a)
(package private) ModulusPoly	getOne()
(package private) int	getSize()
(package private) ModulusPoly	getZero()
(package private) int	inverse(int a)
(package private) int	log(int a)
(package private) int	multiply(int a, int b)
(package private) int	subtract(int a, int b)

Methods inherited from class java.lang.Object

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

Field Detail

PDF417_GF

public static final ModulusGF PDF417_GF

expTable

private final int[] expTable

logTable

private final int[] logTable

zero

private final ModulusPoly zero

one

private final ModulusPoly one

modulus

private final int modulus

Constructor Detail

ModulusGF

private ModulusGF(int modulus,
                  int generator)

Method Detail

getZero

ModulusPoly getZero()

getOne

ModulusPoly getOne()

buildMonomial

ModulusPoly buildMonomial(int degree,
                          int coefficient)

add

int add(int a,
        int b)

subtract

int subtract(int a,
             int b)

exp

int exp(int a)

log

int log(int a)

inverse

int inverse(int a)

multiply

int multiply(int a,
             int b)

getSize

int getSize()