zero_matrix()

MutableMatrix * MutableMatrix::zero_matrix ( const Ring * R, size_t nrows, size_t ncols, bool dense )

static

Definition at line 54 of file mat.cpp.

{
  MutableMatrix *result = R->makeMutableMatrix(nrows, ncols, dense);
  if (result != nullptr) return result;
  // In this case, we just use ring elem arithmetic
  const CoefficientRingR *cR = R->getCoefficientRingR();
  if (dense)
    return new MutableMat<DMat<CoefficientRingR> >(R, cR, nrows, ncols);
  else
    return new MutableMat<SMat<CoefficientRingR> >(R, cR, nrows, ncols);
}

References Ring::getCoefficientRingR(), Ring::makeMutableMatrix(), MutableMatrix(), and result().

Referenced by from_matrix(), identity(), IM2_MutableMatrix_make(), LLLoperations::initializeLLL(), mutableMatrix_from_NTL_mat_ZZ(), rawMutableMatrixLift(), rawMutableMatrixPromote(), rawRingMapEvalMutableMatrix(), ResF4toM2Interface::to_M2_MutableMatrix(), and ResF4toM2Interface::to_M2_MutableMatrix().