source: trunk/yat/utility/utility.cc @ 1275

Last change on this file since 1275 was 1275, checked in by Jari Häkkinen, 13 years ago

Updating copyright statements.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.3 KB
Line 
1// $Id: utility.cc 1275 2008-04-11 06:10:12Z jari $
2
3/*
4  Copyright (C) 2005, 2006 Jari Häkkinen, Markus Ringnér
5  Copyright (C) 2007 Jari Häkkinen, Peter Johansson
6
7  This file is part of the yat library, http://trac.thep.lu.se/yat
8
9  The yat library is free software; you can redistribute it and/or
10  modify it under the terms of the GNU General Public License as
11  published by the Free Software Foundation; either version 2 of the
12  License, or (at your option) any later version.
13
14  The yat library is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  General Public License for more details.
18
19  You should have received a copy of the GNU General Public License
20  along with this program; if not, write to the Free Software
21  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22  02111-1307, USA.
23*/
24
25#include "utility.h"
26
27#include "stl_utility.h"
28
29#include <sstream>
30#include <string>
31
32namespace theplu {
33namespace yat {
34namespace utility {
35
36  bool is_double(const std::string& s)
37  {
38    if (is_nan(s) || is_equal(s, "inf") || is_equal(s, "-inf"))
39      return true;
40    std::stringstream ss(s);
41    double a;
42    ss>>a;
43    if(ss.fail()) 
44      return false;
45    // Check that nothing is left on stream
46    std::string b;
47    ss >> b;
48    return (b.size() ? false : true);
49  }
50 
51
52  bool is_equal(std::string s, std::string other)
53  {
54    std::stringstream ss(s);
55    std::string s2;
56    ss >> s2; // to trim surrounding whitespaces
57    to_lower(s2);
58    // Check that nothing is left on stream
59    std::string s3;
60    ss >> s3;
61    if(s3.size())
62      return false;
63    return (other==s2);
64  }
65
66
67  bool is_float(const std::string& s)
68  {
69    if (is_nan(s) || is_equal(s, "inf") || is_equal(s, "-inf"))
70      return true;
71    std::stringstream ss(s);
72    float a;
73    ss>>a;
74    if(ss.fail()) 
75      return false;
76    // Check that nothing is left on stream
77    std::string b;
78    ss >> b;
79    return (b.size() ? false : true);
80  }
81
82
83  bool is_int(const std::string& s)
84  {
85    if (is_nan(s) || is_equal(s, "inf") || is_equal(s, "-inf"))
86      return true;
87    std::stringstream ss(s);
88    int a;
89    ss >> a;
90    if(ss.fail()) 
91      return false;
92    // Check that nothing is left on stream
93    std::string b;
94    ss >> b;
95    return (b.size() ? false : true);
96  }
97
98  bool is_nan(const std::string& s)
99  {
100    return is_equal(s, "nan");
101  }
102
103
104
105}}} // end of namespace utility, yat and thep
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