diff --git a/include/ceres/types.h b/include/ceres/types.h
index 2c0b7bd..30dcada 100644
--- a/include/ceres/types.h
+++ b/include/ceres/types.h
@@ -324,7 +324,11 @@
     LinearSolverTerminationType type);
 
 const char* SolverTerminationTypeToString(SolverTerminationType type);
+
 bool IsSchurType(LinearSolverType type);
+bool IsSparseLinearAlgebraLibraryTypeAvailable(
+    SparseLinearAlgebraLibraryType type);
+
 
 }  // namespace ceres