Fix p/g mixup that I just put back.

diff --git a/optimization/step_length_positive_definite.m b/optimization/step_length_positive_definite.m
index b9fe48efa52144ab6c6fdb05f06cf3c5e8b6a9dd..255efbac78fd2df4fbc4704fc379e87f624ad77e 100644 (file)
--- a/optimization/step_length_positive_definite.m
+++ b/optimization/step_length_positive_definite.m
@@ -41,5 +41,5 @@ function alpha = step_length_positive_definite(g, Q, p)
     denom = eps;
   end
 
-  alpha = (g' * g)/denom;
+  alpha = -(g' * p)/denom;
 end