power()

void M2::ARingGFM2::power ( elem & result, elem a, long n ) const

inline

Definition at line 333 of file aring-m2-gf.hpp.

  {
    if (a != 0)
      {
        long order1 = static_cast<long>(mGF.orderMinusOne());
        result = static_cast<elem>((a * n) % order1);
        if (result <= 0) result += mGF.orderMinusOne();
      }
    else
      {
        // a is the zero element
        if (n > 0)
          result = 0;
        else if (n == 0)
          result = mGF.one();
        else
          throw exc::division_by_zero_error();
      }
  }

References mGF, and result().

Referenced by fromSmallIntegerCoefficients(), and power_mpz().