commit d432f78389e08baa5f2717f225097f38d611e082
author Sameer Agarwal <sameeragarwal@google.com> Mon Jun 11 11:52:32 2012 -0700
committer Sameer Agarwal <sameeragarwal@google.com> Mon Jun 11 13:38:24 2012 -0700
tree 6f23ea381ce0d533589a330aa9c2c1436503016d
parent eb22b8b572a1ca51fb3041f68547093e54f5f9a2

Add explicit support for invalid steps

Change-Id: Ib4ff395a044bf053f81d06058d7fd13f5f4f54d7

internal/ceres/trust_region_strategy.h

diff --git a/internal/ceres/trust_region_strategy.h b/internal/ceres/trust_region_strategy.h
index afa4400..2463d64 100644
--- a/internal/ceres/trust_region_strategy.h
+++ b/internal/ceres/trust_region_strategy.h
@@ -96,6 +96,12 @@
   // decrease in the trust region model is step_quality.
   virtual void StepRejected(double step_quality) = 0;
 
+  // Inform the strategy that the current step has been rejected
+  // because it was found to be numerically invalid.
+  // StepRejected/StepAccepted will not be called for this step, and
+  // the strategy is free to do what it wants with this information.
+  virtual void StepIsInvalid() = 0;
+
   // Current trust region radius.
   virtual double Radius() const = 0;