Originally Posted by

**ZTik**
The problem to solve was to avoid using Math header, library function and the shift-mask operators.

In that case the only option was to use the division and the remainder % operators.

Or just use addition...

Code:

#include <stdio.h>
int main(int argc, char *argv[]) {
float f;
int x;
int e = 0;
if(sizeof(int) != 4 || sizeof(float) != 4) {
printf("Ints are of wrong size\n");
return 0;
}
printf("Enter value: ");
scanf("%f",&f);
printf("Value is %f\n",f);
x = *((int *)&f);
x += x; e = (x < 0 ? e*2+1 : e*2);
x += x; e = (x < 0 ? e*2+1 : e*2);
x += x; e = (x < 0 ? e*2+1 : e*2);
x += x; e = (x < 0 ? e*2+1 : e*2);
x += x; e = (x < 0 ? e*2+1 : e*2);
x += x; e = (x < 0 ? e*2+1 : e*2);
x += x; e = (x < 0 ? e*2+1 : e*2);
x += x; e = (x < 0 ? e*2+1 : e*2);
e -= 127; // Remove exponent bias
printf("e is %i\n",e);
}