subtract_multiple()

void CoefficientRingZZp::subtract_multiple ( elem & result, elem a, elem b ) const

inline

Definition at line 185 of file coeffrings.hpp.

  {
    // we assume: a, b are NONZERO!!
    // result -= a*b
    elem ab = modulus_add(a, b, p1);
    subtract(result, result, ab);
    return;
    // if (result==zero)
    //   result = ab;
    // else
    //   {
    //  int n = modulus_sub(exp_table[result], exp_table[ab], p);
    //  result = log_table[n];
    //   }
  }

References modulus_add(), p1, result(), and subtract().