libStatGen Software  1
MemoryInfo.cpp
1 /*
2  * Copyright (C) 2010 Regents of the University of Michigan
3  *
4  * This program is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program. If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #include "MemoryInfo.h"
19 
20 String & MemoryInfo(double bytes)
21 {
22  static String info;
23 
24  if (bytes < 1024)
25  return info = "<1.0 kb";
26 
27  if (bytes < 1024. * 1024.)
28  info.printf("%.1f kb", (bytes + 1023) / 1024.);
29  else if (bytes < 1024. * 1024. * 1024.)
30  info.printf("%.1f mb", (bytes + 1024. * 1024. - 1) / (1024. * 1024.));
31  else if (bytes < 1024. * 1024. * 1024. * 1024.)
32  info.printf("%.1f gb", bytes / (1024. * 1024. * 1024.));
33  else
34  info.printf("%.1f tb", bytes / (1024. * 1024. * 1024. * 1024.));
35 
36  return info;
37 }