signdivide()

int signdivide ( int n, const_exponents a, const_exponents b, exponents_t exp )

static

Definition at line 1146 of file matrix.cpp.

{
  int sign = 0;
  int sum = 0;
  for (int i = 0; i < n; i++)
    {
      int e = a[i] - b[i];
      if (e < 0) return 0;
      exp[i] = e;
      sign += sum * e;
      sum += b[i];
    }
  sign %= 2;
  if (sign == 0) return 1;
  return -1;
}

Referenced by Matrix::koszul().