1 files changed, 4 insertions, 0 deletions
diff --git a/extern/libmv/third_party/ceres/include/ceres/iteration_callback.h b/extern/libmv/third_party/ceres/include/ceres/iteration_callback.h
index 987c2d91f79..56892562556 100644
--- a/extern/libmv/third_party/ceres/include/ceres/iteration_callback.h
+++ b/extern/libmv/third_party/ceres/include/ceres/iteration_callback.h
@@ -50,6 +50,7 @@ struct IterationSummary {
         cost(0.0),
         cost_change(0.0),
         gradient_max_norm(0.0),
+        gradient_norm(0.0),
         step_norm(0.0),
         eta(0.0),
         step_size(0.0),
@@ -100,6 +101,9 @@ struct IterationSummary {
   // Infinity norm of the gradient vector.
   double gradient_max_norm;
 
+  // 2-norm of the gradient vector.
+  double gradient_norm;
+
   // 2-norm of the size of the step computed by the optimization
   // algorithm.
   double step_norm;