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comparison c/utils.cpp @ 144:b32947b002da

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added the code to read matrices from text files
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Fri, 26 Aug 2011 19:38:11 -0400
parents a52653dca25d
children 7bf8084e720f
comparison
equal deleted inserted replaced
143:436b87d4b992 144:b32947b002da
1 #include "utils.hpp" 1 #include "utils.hpp"
2
3 #include <boost/foreach.hpp>
2 4
3 #include <iostream> 5 #include <iostream>
4 #include <fstream> 6 #include <fstream>
7 #include <sstream>
5 8
6 using namespace std; 9 using namespace std;
10
11 vector<vector<float> > loadNumbers(const string& filename, const string& separator /* = " " */) {
12 ifstream in(filename.c_str());
13 ::openCheck(in, filename, "loadNumbers");
14 vector<vector<float> > result;
15
16 while (!in.eof()) {
17 string line = ::getlineComment(in);
18 vector<string> tokens;
19 ::split(tokens, line, separator);
20 vector<float> numbers;
21 BOOST_FOREACH(string s, tokens)
22 numbers.push_back(::toInt(s));
23 if (!numbers.empty())
24 result.push_back(numbers);
25 }
26
27 return result;
28 }
29
30 int toInt(const std::string& s) { int i; fromString(i, s); return i;} //atoi
31
32 float toFloat(const std::string& s) { float x; fromString(x, s); return x;}// lexical_cast<float>(s)
33
34 double toDouble(const std::string& s) { double x; fromString(x, s); return x;}
35
36 string getlineComment(ifstream& f) {
37 string s;
38 getline(f, s);
39 while ((!f.eof()) && (s[0] == ::commentChar)) {
40 getline(f, s);
41 }
42
43 if (s[0] == ::commentChar)
44 s.clear();
45 return s;
46 }
7 47
8 void openWriteScientificPrecision(ofstream& out, const string& filename, const int& precision) { 48 void openWriteScientificPrecision(ofstream& out, const string& filename, const int& precision) {
9 ::openWritePrecision(out, filename, precision); 49 ::openWritePrecision(out, filename, precision);
10 out.setf(ios::scientific); 50 out.setf(ios::scientific);
11 } 51 }