◆ is_pm_one()

bool M2::ARingQQFlint::is_pm_one ( const ElementType & f ) const

inline

Definition at line 92 of file aring-qq-flint.hpp.

  {
    return fmpq_is_one(&f) or ((fmpz_cmp_si(fmpq_numref(&f), -1) == 0) and
                               fmpz_is_one(fmpq_denref(&f)));
  }