NCCoefficientMatrix() [1/2]

std::pair< Matrix *, Matrix * > NCCoefficientMatrix

(

const Matrix *

M

)

Definition at line 1673 of file matrix.cpp.

{
  const M2FreeAlgebraOrQuotient* Q = dynamic_cast<const M2FreeAlgebraOrQuotient*>(M->get_ring());
  if (Q == nullptr)
    {
      ERROR("expected NC polynomial algebra");
      return {nullptr, nullptr};
    }
 
  ModuleMonomialSet H(ModuleMonomDefaultConfig(Q->n_vars()));
  NCMonomials(H, M);
  
  // now loop through all columns in M, monomials in column:
  //   find index.
  //   create coeff
  // return matrix constructed.
  return {nullptr, nullptr};
}

References ERROR, Matrix::get_ring(), Matrix, M2FreeAlgebraOrQuotient::n_vars(), and NCMonomials().