Clean, efficient algorithm for wrapping integers in C++

Question

/**
  * Returns a number between kLowerBound and kUpperBound
  * e.g.: Wrap(-1, 0, 4); // Returns 4
  * e.g.: Wrap(5, 0, 4); // Returns 0      
  */
int Wrap(int con         


        

Answer 1

For negative kX, you can add:

int temp = kUpperBound - kLowerBound + 1;
while (kX < 0) kX += temp;
return kX%temp + kLowerBound;