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				@@ -811,6 +811,7 @@ struct NumTraits<ceres::Jet<T, N> > { 
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				   typedef ceres::Jet<T, N> Real; 
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				   typedef ceres::Jet<T, N> NonInteger; 
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				   typedef ceres::Jet<T, N> Nested; 
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				+  typedef ceres::Jet<T, N> Literal; 
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				   static typename ceres::Jet<T, N> dummy_precision() { 
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				     return ceres::Jet<T, N>(1e-12); 
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				@@ -831,6 +832,14 @@ struct NumTraits<ceres::Jet<T, N> > { 
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				     HasFloatingPoint = 1, 
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				     RequireInitialization = 1 
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				   }; 
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				+ 
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				+  template<bool Vectorized> 
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				+  struct Div { 
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				+    enum { 
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				+      AVX = false, 
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				+      Cost = 1 
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				+    }; 
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				+  }; 
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				 }; 
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				 }  // namespace Eigen 
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