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#include <iostream>
// TODO 4: include cmath
#include "MathFunctions.h"
// a hack square root calculation using simple operations
double mysqrt(double x)
{
if (x <= 0) {
return 0;
}
// TODO 5: If both HAVE_LOG and HAVE_EXP are defined, use the following:
//// double result = std::exp(std::log(x) * 0.5);
//// std::cout << "Computing sqrt of " << x << " to be " << result
//// << " using log and exp" << std::endl;
// else, use the existing logic.
// Hint: Don't forget the #endif before returning the result!
double result = x;
// do ten iterations
for (int i = 0; i < 10; ++i) {
if (result <= 0) {
result = 0.1;
}
double delta = x - (result * result);
result = result + 0.5 * delta / result;
std::cout << "Computing sqrt of " << x << " to be " << result << std::endl;
}
return result;
}
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