counting operations

[FireNutz]

I'm trying to figure out how in the example they came up with how they added the bitops mults and adds

double sqrt(int x) { 
double tol = (double)x*1.e-17; 
double y = (double)x; 
double radicand = y; // radicand = number whose square root we seek 
double sqrt = y/2;  // first guess 
bitops += 6;   mults += 2; 
while(abs(y - sqrt) > tol) { 
  y = sqrt; 
  sqrt = (y + radicand/y)/2; 
  mults +=2; adds += 2; bitops += 4; 
 } 
return(sqrt);
} 

[Stewbond]

bitops, mults and adds are not defined within the scope of this function. If this compiles, then these were declared globally.

[johnbob]

also 'sqrt' shouldn't be used both as a variable name and the function.

[FireNutz]

Sorry I should have clarified that this was a function outside of main and that bitops, mults and adds have been declared at the beginning of the code. They are counters to assess how many operations are taking place. I am trying to understand which are the bit operations - bitops, when it multiplies and divides - mults, and the additions and subtractions - adds.