コード例 #1
0
ファイル: AlgebraTools.cpp プロジェクト: siconos/siconos
 void expm(SiconosMatrix& A, SiconosMatrix& Exp, bool computeAndAdd)
 {
   // Implemented only for dense matrices.
   // Note FP : Maybe it works for others but it has not been
   // tested here --> to be done
   // Do not work with sparse.
   A.resetLU();
   Exp.resetLU();
   assert(Exp.num() == 1 || A.num() == 1);
   if(computeAndAdd)
     *Exp.dense() += expm_pad(*A.dense());
   else
     *Exp.dense() = expm_pad(*A.dense());
 }
コード例 #2
0
void add(const SiconosMatrix & A, const SiconosMatrix& B, SiconosMatrix& C)
{
  // To compute C = A + B in an "optimized" way (in comparison with operator +)

  if ((A.size(0) != B.size(0)) || (A.size(1) != B.size(1)))
    SiconosMatrixException::selfThrow("Matrix addition: inconsistent sizes");
  if ((A.size(0) != C.size(0)) || (A.size(1) != C.size(1)))
    SiconosMatrixException::selfThrow("Matrix addition: inconsistent sizes");

  unsigned int numA = A.getNum();
  unsigned int numB = B.getNum();
  unsigned int numC = C.getNum();

  // === if C is zero or identity => read-only ===
  if (numC == 6 || numC == 7)
    SiconosMatrixException::selfThrow("Matrix addition ( add(A,B,C) ): wrong type for resulting matrix C (read-only: zero or identity).");

  // === common memory between A, B, C ===
  if (&A == &C) // A and C have common memory
  {
    C += B;
  }
  else if (&B == &C)  // B and C have common memory
  {
    C += A;
  }
  else // No common memory between C and A or B.
  {
    if (numA == 6) // A = 0
      C = B ;
    else if (numB == 6) // B = 0
      C = A;
    else // A and B different from 0
    {
      if (numC == 0) // if C is Block
      {
        if (numA != 0) // A simple, whatever is B
        {
          C = A;
          C += B;
        }
        else  // A Block
        {
          C = B;
          C += A;
        }
      }
      else // if C is a SimpleMatrix
      {
        if (numA == numB && numA != 0) // A and B are of the same type and NOT block
        {
          if (numC == numA)
          {
            if (numA == 1)
              noalias(*C.dense()) = *A.dense() + *B.dense();
            else if (numA == 2)
              noalias(*C.triang()) = *A.triang() + *B.triang();
            else if (numA == 3)
              noalias(*C.sym()) = *A.sym() + *B.sym();
            else if (numA == 4)
              noalias(*C.sparse()) = *A.sparse() + *B.sparse();
            else //if(numA==5)
              noalias(*C.banded()) = *A.banded() + *B.banded();
          }
          else // C and A of different types.
          {
            if (numC != 1)
              SiconosMatrixException::selfThrow("Matrix addition ( add(A,B,C) ): wrong type for resulting matrix C.");
            // Only dense matrices are allowed for output.

            if (numA == 1)
              noalias(*C.dense()) = *A.dense() + *B.dense();
            else if (numA == 2)
              noalias(*C.dense()) = *A.triang() + *B.triang();
            else if (numA == 3)
              noalias(*C.dense()) = *A.sym() + *B.sym();
            else if (numA == 4)
              noalias(*C.dense()) = *A.sparse() + *B.sparse();
            else //if(numA==5)
              noalias(*C.dense()) = *A.banded() + *B.banded();
          }
          C.resetLU();
        }
        else if (numA != 0 && numB != 0 && numA != numB) // A and B of different types and none is block
        {
          if (numC != 1)
            SiconosMatrixException::selfThrow("Matrix addition ( add(A,B,C) ): wrong type for resulting matrix C.");
          // Only dense matrices are allowed for output.

          if (numA == 1)
            switch (numB)
            {
            case 2:
              noalias(*C.dense()) = *A.dense() + *B.triang();
              break;
            case 3:
              noalias(*C.dense()) = *A.dense() + *B.sym();
              break;
            case 4:
              noalias(*C.dense()) = *A.dense() + *B.sparse();
              break;
            case 5:
              noalias(*C.dense()) = *A.dense() + *B.banded();
              break;
            case 7:
              noalias(*C.dense()) = *A.dense() + *B.identity();
              break;
            default:
              SiconosMatrixException::selfThrow("Matrix function add(A,B,C): invalid type of matrix");
            }
          else if (numA == 2)
            switch (numB)
            {
            case 1:
              noalias(*C.dense()) = *A.triang() + *B.dense();
              break;
            case 3:
              noalias(*C.dense()) = *A.triang() + *B.sym();
              break;
            case 4:
              noalias(*C.dense()) = *A.triang() + *B.sparse();
              break;
            case 5:
              noalias(*C.dense()) = *A.triang() + *B.banded();
              break;
            case 7:
              noalias(*C.dense()) = *A.triang() + *B.identity();
              break;
            default:
              SiconosMatrixException::selfThrow("Matrix function add(A,B,C): invalid type of matrix");
            }
          else if (numA == 3)
            switch (numB)
            {
            case 1:
              noalias(*C.dense()) = *A.sym() + *B.dense();
              break;
            case 2:
              noalias(*C.dense()) = *A.sym() + *B.triang();
              break;
            case 4:
              noalias(*C.dense()) = *A.sym() + *B.sparse();
              break;
            case 5:
              noalias(*C.dense()) = *A.sym() + *B.banded();
              break;
            case 7:
              noalias(*C.dense()) = *A.sym() + *B.identity();
              break;
            default:
              SiconosMatrixException::selfThrow("Matrix function add(A,B,C): invalid type of matrix");
            }
          else if (numA == 4)
            switch (numB)
            {
            case 1:
              noalias(*C.dense()) = *A.sparse() + *B.dense();
              break;
            case 2:
              noalias(*C.dense()) = *A.sparse() + *B.triang();
              break;
            case 3:
              noalias(*C.dense()) = *A.sparse() + *B.sym();
              break;
            case 5:
              noalias(*C.dense()) = *A.sparse() + *B.banded();
              break;
            case 7:
              noalias(*C.dense()) = *A.sparse() + *B.identity();
              break;
            default:
              SiconosMatrixException::selfThrow("Matrix function add(A,B,C): invalid type of matrix");
            }
          else if (numA == 5)
            switch (numB)
            {
            case 1:
              noalias(*C.dense()) = *A.banded() + *B.dense();
              break;
            case 2:
              noalias(*C.dense()) = *A.banded() + *B.triang();
              break;
            case 3:
              noalias(*C.dense()) = *A.banded() + *B.sym();
              break;
            case 4:
              noalias(*C.dense()) = *A.banded() + *B.sparse();
              break;
            case 7:
              noalias(*C.dense()) = *A.banded() + *B.identity();
              break;
            default:
              SiconosMatrixException::selfThrow("Matrix function add(A,B,C): invalid type of matrix");
            }
          else if (numA == 7)
            switch (numB)
            {
            case 1:
              noalias(*C.dense()) = *A.identity() + *B.dense();
              break;
            case 2:
              noalias(*C.dense()) = *A.identity() + *B.triang();
              break;
            case 3:
              noalias(*C.dense()) = *A.identity() + *B.sym();
              break;
            case 4:
              noalias(*C.dense()) = *A.identity() + *B.sparse();
              break;
            case 5:
              noalias(*C.dense()) = *A.identity() + *B.banded();
              break;
            default:
              SiconosMatrixException::selfThrow("Matrix function add(A,B,C): invalid type of matrix");
            }
          else
            SiconosMatrixException::selfThrow("Matrix function add(A,B,C): invalid type of matrix");
          C.resetLU();
        }
        else // A and/or B is Block
        {
          if (numA != 0) // A Simple, whatever is B
          {
            C = A;
            C += B;
          }
          else // A Block
          {
            C = B;
            C += A;
          }
        }
      }
    }
  }

}