diff()

int SkewMultiplication::diff	(	const int *	exp1,
		const int *	exp2,
		int *	result ) const

Definition at line 109 of file skew.cpp.

{
  for (int i = 0; i < _n_vars; i++)
    {
      int cmp = exp2[i] - exp1[i];
      if (cmp < 0) return 0;
      result[i] = cmp;
    }
  exponents_t SKEW1 = ALLOCATE_EXPONENTS(skew_byte_size);
  exponents_t SKEW2 = ALLOCATE_EXPONENTS(skew_byte_size);
  int a = skew_vars(result, SKEW1);
  int b = skew_vars(exp1, SKEW2);
  int sign = sort_sign(a, SKEW1, b, SKEW2);
  int c = b % 4;
  if (c == 2 || c == 3) sign = -sign;
  return sign;
}

References _n_vars, ALLOCATE_EXPONENTS, result(), skew_byte_size, skew_vars(), and sort_sign().