| 81 | |
| 82 | |
| 83 | string TimeStat::Line() const |
| 84 | { |
| 85 | if (number == 0) |
| 86 | return ""; |
| 87 | |
| 88 | double avg = static_cast<double>(cum) / static_cast<double>(number); |
| 89 | double arg = (cumsq / static_cast<double>(number)) - avg * avg; |
| 90 | double sdev = (arg >= 0. ? sqrt(arg) : 0.); |
| 91 | |
| 92 | stringstream ss; |
| 93 | ss << setw(9) << right << number << |
| 94 | setw(13) << cum << |
| 95 | setw(13) << setprecision(0) << fixed << avg << |
| 96 | setw(13) << setprecision(0) << fixed << sdev << |
| 97 | setw(13) << setprecision(2) << fixed << sdev/avg << "\n"; |
| 98 | |
| 99 | return ss.str(); |
| 100 | } |