public static bool bigloo_strncmp( byte[] s1, byte[] s2, int l ) { int n1= s1.Length; int n2= s2.Length; if ((n1 >= l) && (n2 >= l)) { for ( int i= 0 ; i < l ; ++i ) if (s1[i] != s2[i]) return false; return true; } else return false; }