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-rw-r--r--Eigen/src/Core/IO.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/Eigen/src/Core/IO.h b/Eigen/src/Core/IO.h
index 78a83b722..50bf93d9f 100644
--- a/Eigen/src/Core/IO.h
+++ b/Eigen/src/Core/IO.h
@@ -128,6 +128,7 @@ struct significant_decimals_default_impl
static inline int run()
{
using std::ceil;
+ using std::log;
return cast<RealScalar,int>(ceil(-log(NumTraits<RealScalar>::epsilon())/log(RealScalar(10))));
}
};