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
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// SPDX-License-Identifier: LGPL-3.0-or-later
// Author: Kristian Lytje
#include <utility/Utility.h>
#include <utility/Console.h>
using namespace ausaxs;
bool utility::approx(double v1, double v2, double abs, double eps) {
return std::abs(v1 - v2) <= std::max(abs, eps * std::max(std::abs(v1), std::abs(v2)));
}
bool utility::equal(double a, double b, double c) {
return a == b && b == c;
}
std::string utility::uid() {
static unsigned int i = 0;
return std::to_string(i++);
}
std::string utility::uid(const std::string& s) {return s + uid();}
std::ostream& utility::detail::operator<<(std::ostream& os, const __dummy& obj) {
os << obj.s;
return os;
}
std::string utility::round(double val, unsigned int decimals) noexcept {
std::stringstream ss;
ss << std::fixed << std::setprecision(decimals) << val;
return ss.str();
}
utility::detail::__dummy utility::fixedwidth(double number, unsigned int width) {
std::string s = std::to_string(number);
// remove unnecessary 0s
unsigned int end = s.size();
for (unsigned int i = end; i > 0; i--) {
if (s[i-1] != '0') {
end = i+1;
break;
}
}
if (end < s.size()) {
s.resize(end);
}
std::string o;
for (unsigned int i = 0; i < width; i++) {
if (i < s.size()) {
o += s[i];
} else {
o += ' ';
}
}
// check how lossy the conversion was
#ifdef DEBUG
double d = std::stod(o);
if (!approx(d, number, 1e-3)) {
console::print_warning("Fixed-width conversion of " + std::to_string(number) + " to " + o + " is lossy.");
}
#endif
return {std::move(o)};
}
|
