public static bool bigloo_strcmp_at(byte[] s1, byte[] s2, int d) { int n1 = s1.Length; int n2 = s2.Length; if ((d < 0) || (n1 < n2 + d)) return false; for (int i = 0; i < n2; ++i) if (s1[i + d] != s2[i]) return false; return true; }