public bool LongDecode(int[] received, int ecBytes)
{
if (ecBytes == 0)
{
throw new ArgumentException("No error correction bytes");
}
var dataBytes = received.Length - ecBytes;
if (dataBytes <= 0)
{
throw new ArgumentException("No data bytes provided");
}
var errorsCorrected = false;
var generator = BuildGenerator(ecBytes);
var count = 0;
GenericGFPoly remainder = null;
var iteratorTemp = new int[received.Length];
Array.Copy(received, 0, iteratorTemp, 0, received.Length);
var tempInfo = new GenericGFPoly(_field, iteratorTemp);
while (count <= dataBytes)
{
remainder = tempInfo.longDivide(generator)[1];
if (remainder.Coefficients.Count(coeff => coeff != 0) <= ecBytes / 2)
{
errorsCorrected = true;
break;
}
count++;
Array.Copy(received, 0, iteratorTemp, count, received.Length - count);
Array.Copy(received, received.Length - count, iteratorTemp, 0, count);
tempInfo = new GenericGFPoly(_field, iteratorTemp);
}
if (!errorsCorrected)
{
return false;
}
if (count == 0)
{
return true;
}
var correctedInfo = tempInfo.addOrSubtract(remainder);
var missingZerosCorrection = received.Length - correctedInfo.Coefficients.Length;
correctedInfo = correctedInfo.multiplyByMonomial(missingZerosCorrection, 1);
correctedInfo = correctedInfo.shiftLeft(count - missingZerosCorrection);
missingZerosCorrection = received.Length - correctedInfo.Coefficients.Length;
correctedInfo = correctedInfo.multiplyByMonomial(missingZerosCorrection, 1);
Array.Copy(correctedInfo.Coefficients, 0, received, missingZerosCorrection, correctedInfo.Coefficients.Length - missingZerosCorrection);
Array.Copy(correctedInfo.Coefficients, correctedInfo.Coefficients.Length - missingZerosCorrection, received, 0, missingZerosCorrection);
return true;
}
public bool LongDecode(int[] received, int ecBytes)
{
if (ecBytes == 0)
{
throw new ArgumentException("No error correction bytes");
}
var dataBytes = received.Length - ecBytes;
if (dataBytes <= 0)
{
throw new ArgumentException("No data bytes provided");
}
var errorsCorrected = false;
var generator = BuildGenerator(ecBytes);
var count = 0;
GenericGFPoly remainder = null;
var iteratorTemp = new int[received.Length];
Array.Copy(received, 0, iteratorTemp, 0, received.Length);
var tempInfo = new GenericGFPoly(_field, iteratorTemp);
while (count <= dataBytes)
{
remainder = tempInfo.longDivide(generator)[1];
if (remainder.Coefficients.Count(coeff => coeff != 0) <= ecBytes / 2)
{
errorsCorrected = true;
break;
}
count++;
Array.Copy(received, 0, iteratorTemp, count, received.Length - count);
Array.Copy(received, received.Length - count, iteratorTemp, 0, count);
tempInfo = new GenericGFPoly(_field, iteratorTemp);
}
if (!errorsCorrected)
{
return(false);
}
if (count == 0)
{
return(true);
}
var correctedInfo = tempInfo.addOrSubtract(remainder);
var missingZerosCorrection = received.Length - correctedInfo.Coefficients.Length;
correctedInfo = correctedInfo.multiplyByMonomial(missingZerosCorrection, 1);
correctedInfo = correctedInfo.shiftLeft(count - missingZerosCorrection);
missingZerosCorrection = received.Length - correctedInfo.Coefficients.Length;
correctedInfo = correctedInfo.multiplyByMonomial(missingZerosCorrection, 1);
Array.Copy(correctedInfo.Coefficients, 0, received, missingZerosCorrection, correctedInfo.Coefficients.Length - missingZerosCorrection);
Array.Copy(correctedInfo.Coefficients, correctedInfo.Coefficients.Length - missingZerosCorrection, received, 0, missingZerosCorrection);
return(true);
}
