Random float

#include <iostream>
#include <random>
using namespace std;

float randFloat(int hi = 0, int lo = 0){
  if(hi == 0){
    //random number in [0,1)
    return static_cast <float> (rand()) / static_cast <float> (RAND_MAX);
  }else if(lo == 0){
    //random number in [0,hi)
    return static_cast <float> (rand()) / (static_cast <float> (RAND_MAX/hi));
  }else{
    //random number in [lo, hi)
    return lo + static_cast <float> (rand()) /( static_cast <float> (RAND_MAX/(hi-lo)));
  }
}