Compiler optimizations

[Walter Bright]

On my machine, the int version is 1.7 seconds, the double is 3.2. I am 
unable to reproduce your results.

Craig Black wrote:
>> The second one is faster because you cheat.
> 
> Nope. Try this one. On my computer the floating point division is twice as
> fast.  I believe this is due to the overhead on converting the divisor from
> int to double before performing the division.
> 
> #include <stdio.h>
> #include <conio.h>
> #include <time.h>
> 
> //typedef int divtype;
> typedef double divtype; // this one is faster
> 
> int main()
> {
>    int result = 0;
> 
>    clock_t start, finish;
>    double  duration;
> 
>    start = clock();
>    for(divtype div=1; div<10000; div++)
>    {
>       for(int i=0; i<10000; i++)
>       {
>         result += i / div;
>       }
>    }
>    finish = clock();
>    duration = (double)(finish - start) / CLOCKS_PER_SEC;
> 
>    printf("[%i] %2.1f seconds\n",result,duration);
> }
> 
>