Replace M_LN10 altogether. Not entirely standard.

1 files changed, 10 insertions, 1 deletions

diff --git a/moses/Incremental.cpp b/moses/Incremental.cpp
index 36f215a69..f5f5dde66 100644
--- a/moses/Incremental.cpp
+++ b/moses/Incremental.cpp
@@ -214,12 +214,21 @@ Manager::Manager(ttasksptr const& ttask)
 Manager::~Manager()
 { }
 
+
+namespace
+{
+// Natural logarithm of 10.
+//
+// Some implementations of <cmath> define M_LM10, but not all.
+const float log_10 = logf(10);
+}
+
 template <class Model, class Best> search::History Manager::PopulateBest(const Model &model, const std::vector<lm::WordIndex> &words, Best &out)
 {
   const LanguageModel &abstract = LanguageModel::GetFirstLM();
   const float oov_weight = abstract.OOVFeatureEnabled() ? abstract.GetOOVWeight() : 0.0;
   const StaticData &data = StaticData::Instance();
-  search::Config config(abstract.GetWeight() * M_LN10, data.GetCubePruningPopLimit(), search::NBestConfig(data.GetNBestSize()));
+  search::Config config(abstract.GetWeight() * log_10, data.GetCubePruningPopLimit(), search::NBestConfig(data.GetNBestSize()));
   search::Context<Model> context(config, model);
 
   size_t size = m_source.GetSize();