public int[][][] eval(int[][][] dest, NslInt3 a, NslInt3 b) {
   return eval(dest, a.getint3(), b.getint3());
 }
 public int[][][] eval(int a, NslInt3 b) {
   return eval(a, b.getint3());
 }
 public int[][][] eval(NslInt3 a, NslInt3 b) {
   return eval(a.getint3(), b.getint3());
 }
 public int[][][] eval(NslInt3 a, int b) {
   return eval(a.getint3(), b);
 }