blob: 811209f4605921a04ca58534377223bccd6ae6b8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
#include <cmath>
#include <format>
// TODO5: Replace <iostream> with <MathLogger.h>
#include <iostream>
namespace {
// TODO6: Instantiate a logger inside the anonymous 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;
// TODO7: Use the logger to log the message
std::cout << std::format("Computing sqrt of {} to be {}\n", x, result);
}
return result;
}
}
namespace mathfunctions {
double sqrt(double x)
{
#ifdef TUTORIAL_USE_STD_SQRT
return std::sqrt(x);
#else
return mysqrt(x);
#endif
}
}
|
