Index: xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp |
diff --git a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp |
index f87cd5ba86eff0047bff3041fb5562a1a2569452..b1eed008cf184997da7e255c8016012a0dafbd3f 100644 |
--- a/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp |
+++ b/xfa/src/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.cpp |
@@ -1,259 +1,259 @@ |
-// Copyright 2014 PDFium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
-// Original code is licensed as follows: |
-/* |
- * Copyright 2007 ZXing authors |
- * |
- * Licensed under the Apache License, Version 2.0 (the "License"); |
- * you may not use this file except in compliance with the License. |
- * You may obtain a copy of the License at |
- * |
- * http://www.apache.org/licenses/LICENSE-2.0 |
- * |
- * Unless required by applicable law or agreed to in writing, software |
- * distributed under the License is distributed on an "AS IS" BASIS, |
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
- * See the License for the specific language governing permissions and |
- * limitations under the License. |
- */ |
- |
-#include "xfa/src/fxbarcode/barcode.h" |
-#include "BC_ReedSolomonGF256.h" |
-#include "BC_ReedSolomonGF256Poly.h" |
-CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, |
- int32_t coefficients) { |
- if (field == NULL) { |
- return; |
- } |
- m_field = field; |
- m_coefficients.Add(coefficients); |
-} |
-CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly() { |
- m_field = NULL; |
-} |
-void CBC_ReedSolomonGF256Poly::Init(CBC_ReedSolomonGF256* field, |
- CFX_Int32Array* coefficients, |
- int32_t& e) { |
- if (coefficients == NULL || coefficients->GetSize() == 0) { |
- e = BCExceptionCoefficientsSizeIsNull; |
- BC_EXCEPTION_CHECK_ReturnVoid(e); |
- } |
- m_field = field; |
- int32_t coefficientsLength = coefficients->GetSize(); |
- if ((coefficientsLength > 1 && (*coefficients)[0] == 0)) { |
- int32_t firstNonZero = 1; |
- while ((firstNonZero < coefficientsLength) && |
- ((*coefficients)[firstNonZero] == 0)) { |
- firstNonZero++; |
- } |
- if (firstNonZero == coefficientsLength) { |
- m_coefficients.Copy(*(m_field->GetZero()->GetCoefficients())); |
- } else { |
- m_coefficients.SetSize(coefficientsLength - firstNonZero); |
- for (int32_t i = firstNonZero, j = 0; i < coefficientsLength; i++, j++) { |
- m_coefficients[j] = coefficients->operator[](i); |
- } |
- } |
- } else { |
- m_coefficients.Copy(*coefficients); |
- } |
-} |
-CFX_Int32Array* CBC_ReedSolomonGF256Poly::GetCoefficients() { |
- return &m_coefficients; |
-} |
-int32_t CBC_ReedSolomonGF256Poly::GetDegree() { |
- return m_coefficients.GetSize() - 1; |
-} |
-FX_BOOL CBC_ReedSolomonGF256Poly::IsZero() { |
- return m_coefficients[0] == 0; |
-} |
-int32_t CBC_ReedSolomonGF256Poly::GetCoefficients(int32_t degree) { |
- return m_coefficients[m_coefficients.GetSize() - 1 - degree]; |
-} |
-int32_t CBC_ReedSolomonGF256Poly::EvaluateAt(int32_t a) { |
- if (a == 0) { |
- return GetCoefficients(0); |
- } |
- int32_t size = m_coefficients.GetSize(); |
- if (a == 1) { |
- int32_t result = 0; |
- for (int32_t i = 0; i < size; i++) { |
- result = CBC_ReedSolomonGF256::AddOrSubtract(result, m_coefficients[i]); |
- } |
- return result; |
- } |
- int32_t result = m_coefficients[0]; |
- for (int32_t j = 1; j < size; j++) { |
- result = CBC_ReedSolomonGF256::AddOrSubtract(m_field->Multiply(a, result), |
- m_coefficients[j]); |
- } |
- return result; |
-} |
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Clone(int32_t& e) { |
- CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
- temp->Init(m_field, &m_coefficients, e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- return temp; |
-} |
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::AddOrSubtract( |
- CBC_ReedSolomonGF256Poly* other, |
- int32_t& e) { |
- if (IsZero()) { |
- return other->Clone(e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- } |
- if (other->IsZero()) { |
- return this->Clone(e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- } |
- CFX_Int32Array smallerCoefficients; |
- smallerCoefficients.Copy(m_coefficients); |
- CFX_Int32Array largerCoefficients; |
- largerCoefficients.Copy(*(other->GetCoefficients())); |
- if (smallerCoefficients.GetSize() > largerCoefficients.GetSize()) { |
- CFX_Int32Array temp; |
- temp.Copy(smallerCoefficients); |
- smallerCoefficients.Copy(largerCoefficients); |
- largerCoefficients.Copy(temp); |
- } |
- CFX_Int32Array sumDiff; |
- sumDiff.SetSize(largerCoefficients.GetSize()); |
- int32_t lengthDiff = |
- largerCoefficients.GetSize() - smallerCoefficients.GetSize(); |
- for (int32_t i = 0; i < lengthDiff; i++) { |
- sumDiff[i] = largerCoefficients[i]; |
- } |
- for (int32_t j = lengthDiff; j < largerCoefficients.GetSize(); j++) { |
- sumDiff[j] = (CBC_ReedSolomonGF256::AddOrSubtract( |
- smallerCoefficients[j - lengthDiff], largerCoefficients[j])); |
- } |
- CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
- temp->Init(m_field, &sumDiff, e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- return temp; |
-} |
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply( |
- CBC_ReedSolomonGF256Poly* other, |
- int32_t& e) { |
- if (IsZero() || other->IsZero()) { |
- CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- return temp; |
- } |
- CFX_Int32Array aCoefficients; |
- aCoefficients.Copy(m_coefficients); |
- int32_t aLength = m_coefficients.GetSize(); |
- CFX_Int32Array bCoefficients; |
- bCoefficients.Copy(*(other->GetCoefficients())); |
- int32_t bLength = other->GetCoefficients()->GetSize(); |
- CFX_Int32Array product; |
- product.SetSize(aLength + bLength - 1); |
- for (int32_t i = 0; i < aLength; i++) { |
- int32_t aCoeff = m_coefficients[i]; |
- for (int32_t j = 0; j < bLength; j++) { |
- product[i + j] = CBC_ReedSolomonGF256::AddOrSubtract( |
- product[i + j], |
- m_field->Multiply(aCoeff, other->GetCoefficients()->operator[](j))); |
- } |
- } |
- CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
- temp->Init(m_field, &product, e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- return temp; |
-} |
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(int32_t scalar, |
- int32_t& e) { |
- if (scalar == 0) { |
- CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- return temp; |
- } |
- if (scalar == 1) { |
- return this->Clone(e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- } |
- int32_t size = m_coefficients.GetSize(); |
- CFX_Int32Array product; |
- product.SetSize(size); |
- for (int32_t i = 0; i < size; i++) { |
- product[i] = m_field->Multiply(m_coefficients[i], scalar); |
- } |
- CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
- temp->Init(m_field, &product, e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- return temp; |
-} |
-CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::MultiplyByMonomial( |
- int32_t degree, |
- int32_t coefficient, |
- int32_t& e) { |
- if (degree < 0) { |
- e = BCExceptionDegreeIsNegative; |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- } |
- if (coefficient == 0) { |
- CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- return temp; |
- } |
- int32_t size = m_coefficients.GetSize(); |
- CFX_Int32Array product; |
- product.SetSize(size + degree); |
- for (int32_t i = 0; i < size; i++) { |
- product[i] = (m_field->Multiply(m_coefficients[i], coefficient)); |
- } |
- CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
- temp->Init(m_field, &product, e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- return temp; |
-} |
-CFX_PtrArray* CBC_ReedSolomonGF256Poly::Divide(CBC_ReedSolomonGF256Poly* other, |
- int32_t& e) { |
- if (other->IsZero()) { |
- e = BCExceptionDivideByZero; |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- } |
- CBC_ReedSolomonGF256Poly* rsg1 = m_field->GetZero()->Clone(e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- CBC_AutoPtr<CBC_ReedSolomonGF256Poly> quotient(rsg1); |
- CBC_ReedSolomonGF256Poly* rsg2 = this->Clone(e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- CBC_AutoPtr<CBC_ReedSolomonGF256Poly> remainder(rsg2); |
- int32_t denominatorLeadingTerm = other->GetCoefficients(other->GetDegree()); |
- int32_t inverseDenominatorLeadingTeam = |
- m_field->Inverse(denominatorLeadingTerm, e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- while (remainder->GetDegree() >= other->GetDegree() && !remainder->IsZero()) { |
- int32_t degreeDifference = remainder->GetDegree() - other->GetDegree(); |
- int32_t scale = |
- m_field->Multiply(remainder->GetCoefficients((remainder->GetDegree())), |
- inverseDenominatorLeadingTeam); |
- CBC_ReedSolomonGF256Poly* rsg3 = |
- other->MultiplyByMonomial(degreeDifference, scale, e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- CBC_AutoPtr<CBC_ReedSolomonGF256Poly> term(rsg3); |
- CBC_ReedSolomonGF256Poly* rsg4 = |
- m_field->BuildMonomial(degreeDifference, scale, e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- CBC_AutoPtr<CBC_ReedSolomonGF256Poly> iteratorQuotient(rsg4); |
- CBC_ReedSolomonGF256Poly* rsg5 = |
- quotient->AddOrSubtract(iteratorQuotient.get(), e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp(rsg5); |
- quotient = temp; |
- CBC_ReedSolomonGF256Poly* rsg6 = remainder->AddOrSubtract(term.get(), e); |
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
- CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp1(rsg6); |
- remainder = temp1; |
- } |
- CFX_PtrArray* tempPtrA = new CFX_PtrArray; |
- tempPtrA->Add(quotient.release()); |
- tempPtrA->Add(remainder.release()); |
- return tempPtrA; |
-} |
-CBC_ReedSolomonGF256Poly::~CBC_ReedSolomonGF256Poly() { |
- m_coefficients.RemoveAll(); |
-} |
+// Copyright 2014 PDFium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
+// Original code is licensed as follows: |
+/* |
+ * Copyright 2007 ZXing authors |
+ * |
+ * Licensed under the Apache License, Version 2.0 (the "License"); |
+ * you may not use this file except in compliance with the License. |
+ * You may obtain a copy of the License at |
+ * |
+ * http://www.apache.org/licenses/LICENSE-2.0 |
+ * |
+ * Unless required by applicable law or agreed to in writing, software |
+ * distributed under the License is distributed on an "AS IS" BASIS, |
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
+ * See the License for the specific language governing permissions and |
+ * limitations under the License. |
+ */ |
+ |
+#include "xfa/src/fxbarcode/barcode.h" |
+#include "BC_ReedSolomonGF256.h" |
+#include "BC_ReedSolomonGF256Poly.h" |
+CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field, |
+ int32_t coefficients) { |
+ if (field == NULL) { |
+ return; |
+ } |
+ m_field = field; |
+ m_coefficients.Add(coefficients); |
+} |
+CBC_ReedSolomonGF256Poly::CBC_ReedSolomonGF256Poly() { |
+ m_field = NULL; |
+} |
+void CBC_ReedSolomonGF256Poly::Init(CBC_ReedSolomonGF256* field, |
+ CFX_Int32Array* coefficients, |
+ int32_t& e) { |
+ if (coefficients == NULL || coefficients->GetSize() == 0) { |
+ e = BCExceptionCoefficientsSizeIsNull; |
+ BC_EXCEPTION_CHECK_ReturnVoid(e); |
+ } |
+ m_field = field; |
+ int32_t coefficientsLength = coefficients->GetSize(); |
+ if ((coefficientsLength > 1 && (*coefficients)[0] == 0)) { |
+ int32_t firstNonZero = 1; |
+ while ((firstNonZero < coefficientsLength) && |
+ ((*coefficients)[firstNonZero] == 0)) { |
+ firstNonZero++; |
+ } |
+ if (firstNonZero == coefficientsLength) { |
+ m_coefficients.Copy(*(m_field->GetZero()->GetCoefficients())); |
+ } else { |
+ m_coefficients.SetSize(coefficientsLength - firstNonZero); |
+ for (int32_t i = firstNonZero, j = 0; i < coefficientsLength; i++, j++) { |
+ m_coefficients[j] = coefficients->operator[](i); |
+ } |
+ } |
+ } else { |
+ m_coefficients.Copy(*coefficients); |
+ } |
+} |
+CFX_Int32Array* CBC_ReedSolomonGF256Poly::GetCoefficients() { |
+ return &m_coefficients; |
+} |
+int32_t CBC_ReedSolomonGF256Poly::GetDegree() { |
+ return m_coefficients.GetSize() - 1; |
+} |
+FX_BOOL CBC_ReedSolomonGF256Poly::IsZero() { |
+ return m_coefficients[0] == 0; |
+} |
+int32_t CBC_ReedSolomonGF256Poly::GetCoefficients(int32_t degree) { |
+ return m_coefficients[m_coefficients.GetSize() - 1 - degree]; |
+} |
+int32_t CBC_ReedSolomonGF256Poly::EvaluateAt(int32_t a) { |
+ if (a == 0) { |
+ return GetCoefficients(0); |
+ } |
+ int32_t size = m_coefficients.GetSize(); |
+ if (a == 1) { |
+ int32_t result = 0; |
+ for (int32_t i = 0; i < size; i++) { |
+ result = CBC_ReedSolomonGF256::AddOrSubtract(result, m_coefficients[i]); |
+ } |
+ return result; |
+ } |
+ int32_t result = m_coefficients[0]; |
+ for (int32_t j = 1; j < size; j++) { |
+ result = CBC_ReedSolomonGF256::AddOrSubtract(m_field->Multiply(a, result), |
+ m_coefficients[j]); |
+ } |
+ return result; |
+} |
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Clone(int32_t& e) { |
+ CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
+ temp->Init(m_field, &m_coefficients, e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ return temp; |
+} |
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::AddOrSubtract( |
+ CBC_ReedSolomonGF256Poly* other, |
+ int32_t& e) { |
+ if (IsZero()) { |
+ return other->Clone(e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ } |
+ if (other->IsZero()) { |
+ return this->Clone(e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ } |
+ CFX_Int32Array smallerCoefficients; |
+ smallerCoefficients.Copy(m_coefficients); |
+ CFX_Int32Array largerCoefficients; |
+ largerCoefficients.Copy(*(other->GetCoefficients())); |
+ if (smallerCoefficients.GetSize() > largerCoefficients.GetSize()) { |
+ CFX_Int32Array temp; |
+ temp.Copy(smallerCoefficients); |
+ smallerCoefficients.Copy(largerCoefficients); |
+ largerCoefficients.Copy(temp); |
+ } |
+ CFX_Int32Array sumDiff; |
+ sumDiff.SetSize(largerCoefficients.GetSize()); |
+ int32_t lengthDiff = |
+ largerCoefficients.GetSize() - smallerCoefficients.GetSize(); |
+ for (int32_t i = 0; i < lengthDiff; i++) { |
+ sumDiff[i] = largerCoefficients[i]; |
+ } |
+ for (int32_t j = lengthDiff; j < largerCoefficients.GetSize(); j++) { |
+ sumDiff[j] = (CBC_ReedSolomonGF256::AddOrSubtract( |
+ smallerCoefficients[j - lengthDiff], largerCoefficients[j])); |
+ } |
+ CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
+ temp->Init(m_field, &sumDiff, e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ return temp; |
+} |
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply( |
+ CBC_ReedSolomonGF256Poly* other, |
+ int32_t& e) { |
+ if (IsZero() || other->IsZero()) { |
+ CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ return temp; |
+ } |
+ CFX_Int32Array aCoefficients; |
+ aCoefficients.Copy(m_coefficients); |
+ int32_t aLength = m_coefficients.GetSize(); |
+ CFX_Int32Array bCoefficients; |
+ bCoefficients.Copy(*(other->GetCoefficients())); |
+ int32_t bLength = other->GetCoefficients()->GetSize(); |
+ CFX_Int32Array product; |
+ product.SetSize(aLength + bLength - 1); |
+ for (int32_t i = 0; i < aLength; i++) { |
+ int32_t aCoeff = m_coefficients[i]; |
+ for (int32_t j = 0; j < bLength; j++) { |
+ product[i + j] = CBC_ReedSolomonGF256::AddOrSubtract( |
+ product[i + j], |
+ m_field->Multiply(aCoeff, other->GetCoefficients()->operator[](j))); |
+ } |
+ } |
+ CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
+ temp->Init(m_field, &product, e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ return temp; |
+} |
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::Multiply(int32_t scalar, |
+ int32_t& e) { |
+ if (scalar == 0) { |
+ CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ return temp; |
+ } |
+ if (scalar == 1) { |
+ return this->Clone(e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ } |
+ int32_t size = m_coefficients.GetSize(); |
+ CFX_Int32Array product; |
+ product.SetSize(size); |
+ for (int32_t i = 0; i < size; i++) { |
+ product[i] = m_field->Multiply(m_coefficients[i], scalar); |
+ } |
+ CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
+ temp->Init(m_field, &product, e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ return temp; |
+} |
+CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256Poly::MultiplyByMonomial( |
+ int32_t degree, |
+ int32_t coefficient, |
+ int32_t& e) { |
+ if (degree < 0) { |
+ e = BCExceptionDegreeIsNegative; |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ } |
+ if (coefficient == 0) { |
+ CBC_ReedSolomonGF256Poly* temp = m_field->GetZero()->Clone(e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ return temp; |
+ } |
+ int32_t size = m_coefficients.GetSize(); |
+ CFX_Int32Array product; |
+ product.SetSize(size + degree); |
+ for (int32_t i = 0; i < size; i++) { |
+ product[i] = (m_field->Multiply(m_coefficients[i], coefficient)); |
+ } |
+ CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly(); |
+ temp->Init(m_field, &product, e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ return temp; |
+} |
+CFX_PtrArray* CBC_ReedSolomonGF256Poly::Divide(CBC_ReedSolomonGF256Poly* other, |
+ int32_t& e) { |
+ if (other->IsZero()) { |
+ e = BCExceptionDivideByZero; |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ } |
+ CBC_ReedSolomonGF256Poly* rsg1 = m_field->GetZero()->Clone(e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> quotient(rsg1); |
+ CBC_ReedSolomonGF256Poly* rsg2 = this->Clone(e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> remainder(rsg2); |
+ int32_t denominatorLeadingTerm = other->GetCoefficients(other->GetDegree()); |
+ int32_t inverseDenominatorLeadingTeam = |
+ m_field->Inverse(denominatorLeadingTerm, e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ while (remainder->GetDegree() >= other->GetDegree() && !remainder->IsZero()) { |
+ int32_t degreeDifference = remainder->GetDegree() - other->GetDegree(); |
+ int32_t scale = |
+ m_field->Multiply(remainder->GetCoefficients((remainder->GetDegree())), |
+ inverseDenominatorLeadingTeam); |
+ CBC_ReedSolomonGF256Poly* rsg3 = |
+ other->MultiplyByMonomial(degreeDifference, scale, e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> term(rsg3); |
+ CBC_ReedSolomonGF256Poly* rsg4 = |
+ m_field->BuildMonomial(degreeDifference, scale, e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> iteratorQuotient(rsg4); |
+ CBC_ReedSolomonGF256Poly* rsg5 = |
+ quotient->AddOrSubtract(iteratorQuotient.get(), e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp(rsg5); |
+ quotient = temp; |
+ CBC_ReedSolomonGF256Poly* rsg6 = remainder->AddOrSubtract(term.get(), e); |
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL); |
+ CBC_AutoPtr<CBC_ReedSolomonGF256Poly> temp1(rsg6); |
+ remainder = temp1; |
+ } |
+ CFX_PtrArray* tempPtrA = new CFX_PtrArray; |
+ tempPtrA->Add(quotient.release()); |
+ tempPtrA->Add(remainder.release()); |
+ return tempPtrA; |
+} |
+CBC_ReedSolomonGF256Poly::~CBC_ReedSolomonGF256Poly() { |
+ m_coefficients.RemoveAll(); |
+} |