rankProfile() [1/2]

M2_arrayintOrNull ffpackInterface::rankProfile	(	const DMatZZpFFPACK &	A,
		bool	row_profile )

Definition at line 237 of file dmat.cpp.

{
  DMatZZpFFPACK N(mat);
 
  size_t* prof;  // this is where the result will be placed
  size_t rk;
  if (row_profile)
    rk = FFPACK::RowRankProfile(mat.ring().field(),
                                mat.numRows(),
                                mat.numColumns(),
                                N.rowMajorArray(),
                                mat.numColumns(),
                                prof);
  else
    rk = FFPACK::ColumnRankProfile(mat.ring().field(),
                                   mat.numRows(),
                                   mat.numColumns(),
                                   N.rowMajorArray(),
                                   mat.numColumns(),
                                   prof);
 
  M2_arrayint profile = M2_makearrayint(static_cast<int>(rk));
  for (size_t i = 0; i < rk; i++) profile->array[i] = static_cast<int>(prof[i]);
 
  delete[] prof;
  return profile;
}

References DMatZZpFFPACK, and M2_makearrayint().

Referenced by DMatLinAlg< M2::ARingZZpFFPACK >::columnRankProfile().