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abdd4cf0e5
Since clang 16 (and gcc 11) the default C++ standard is now gnu++17.
Because japanese/zinnia's build infrastructure does not explicitly set
its C++ standard, this leads to an error:
svm.cpp:50:10: error: no member named 'random_shuffle' in namespace 'std'
std::random_shuffle(index.begin(), index.begin() + active_size);
~~~~~^
This is because std::random_shuffle has been removed from C++17. An
suitable replacement is std::shuffle, using a std::random_device in
combination with std::mt19937 as the random number engine.
PR: 271953
Approved by: fernape
MFH: 2023Q2
24 lines
697 B
C++
24 lines
697 B
C++
--- svm.cpp.orig 2009-04-05 11:40:29 UTC
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+++ svm.cpp
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@@ -10,6 +10,7 @@
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#include <vector>
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#include <cmath>
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#include <algorithm>
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+#include <random>
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#include "feature.h"
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namespace zinnia {
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@@ -44,10 +45,12 @@ bool svm_train(size_t l,
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}
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static const size_t kMaxIteration = 2000;
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+ std::random_device device;
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+ std::mt19937 engine(device());
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for (size_t iter = 0; iter < kMaxIteration; ++iter) {
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double PGmax_new = -kINF;
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double PGmin_new = kINF;
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- std::random_shuffle(index.begin(), index.begin() + active_size);
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+ std::shuffle(index.begin(), index.begin() + active_size, engine);
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for (size_t s = 0; s < active_size; ++s) {
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const size_t i = index[s];
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