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comparison Framework/Toolbox/LinearAlgebra.cpp @ 790:9f68155c75b0

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speeding up LinearAlgebra::ParseVector()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 28 May 2019 08:29:01 +0200
parents 5aa728500586
children 61ba4b504e9a
comparison
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786:5aa728500586 790:9f68155c75b0
24 #include <Core/Logging.h> 24 #include <Core/Logging.h>
25 #include <Core/OrthancException.h> 25 #include <Core/OrthancException.h>
26 #include <Core/Toolbox.h> 26 #include <Core/Toolbox.h>
27 27
28 #include <stdio.h> 28 #include <stdio.h>
29 #include <boost/lexical_cast.hpp>
30 #include <boost/numeric/ublas/lu.hpp> 29 #include <boost/numeric/ublas/lu.hpp>
31 30
32 namespace OrthancStone 31 namespace OrthancStone
33 { 32 {
34 namespace LinearAlgebra 33 namespace LinearAlgebra
69 68
70 for (size_t i = 0; i < items.size(); i++) 69 for (size_t i = 0; i < items.size(); i++)
71 { 70 {
72 try 71 try
73 { 72 {
74 target[i] = boost::lexical_cast<double>(items[i]); 73 /**
75 } 74 * We don't use "boost::lexical_cast<>" here, as it is very
76 catch (boost::bad_lexical_cast&) 75 * slow. As we are parsing many doubles, we prefer to use
76 * the standard "std::stod" function:
77 * http://www.cplusplus.com/reference/string/stod/
78 **/
79
80 target[i] = std::stod(items[i]);
81 }
82 catch (std::exception&)
77 { 83 {
78 target.clear(); 84 target.clear();
79 return false; 85 return false;
80 } 86 }
81 } 87 }