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// TODO5: Include <cmath>
#include <format>
#include <iostream>
namespace {
// a hack square root calculation using simple operations
double mysqrt(double x)
{
if (x <= 0) {
return 0;
}
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 << std::format("Computing sqrt of {} to be {}\n", x, result);
}
return result;
}
}
namespace mathfunctions {
double sqrt(double x)
{
// TODO6: Check if TUTORIAL_USE_STD_SQRT is defined, if so use std::sqrt
// instead of mysqrt
return mysqrt(x);
}
}
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