subtractMultipleTo()

template<typename T>

void MutableMat< T >::subtractMultipleTo ( const MutableMatrix * A, const MutableMatrix * B )

virtual

Implements MutableMatrix.

Definition at line 197 of file mutablemat-imp.hpp.

{
  // First: make sure that A, B have the right ring/matrix type
  const T* A1 = A->coerce_const<T>();
  const T* B1 = B->coerce_const<T>();
  if (A1 == 0 or B1 == 0)
    throw exc::engine_error(
        "mutable matrix/ring type for (mutable) matrix multiplication required "
        "to be the same");
  if (mat.numRows() != A1->numRows() or mat.numColumns() != B1->numColumns())
    throw exc::engine_error(
        "expected matrix sizes to be compatible with matrix multiplication");
  MatrixOps::subtractMultipleTo(mat, *A1, *B1);
}

References MutableMatrix::coerce_const(), mat, MutableMatrix::MutableMatrix(), MatrixOps::subtractMultipleTo(), and T.