Can anyone suggest me a good blog for binary search on double ? I found these type of implementation on different blog without explanation. Could anyone explain it ?

Type 1:

```
#include<bits/stdc++.h>
using namespace std;
//We want to find an element which a<0.0000001
const float target = 0.0000001;
int main(){
float l=0.00000000,r=100000.00000000;
cout << l << " " << r;
while((r-l)>0.0000000001){
float mid = (float)((l+r)/2);
cout << mid << endl;
if(mid>target) r=mid;
else l=mid;
}cout << l;
}
```

Type 2:

int iterations = 0; while(iterations < 300) { // your binary search logic iterations++; }