commit 367b65e17a541a9f29b9ea63682fe6f6b5b54074
author Sameer Agarwal <sameeragarwal@google.com> Fri Aug 09 10:35:37 2013 -0700
committer Sameer Agarwal <sameeragarwal@google.com> Tue Aug 13 14:57:03 2013 -0700
tree bb3b1c21c0b9ad3bc7f06b47e459ff716b4c91ef
parent 080d1d04bdf722c3f602833c4c07ac1c5d26fcc0

Multiple dense linear algebra backends.

1. When a LAPACK implementation is present, then
DENSE_QR, DENSE_NORMAL_CHOLESKY and DENSE_SCHUR
can use it for doing dense linear algebra operations.

2. The user can switch dense linear algebra libraries
by setting Solver::Options::dense_linear_algebra_library_type.

3. Solver::Options::sparse_linear_algebra_library is now
Solver::Options::sparse_linear_algebra_library_type to be consistent
with all the other enums in Solver::Options.

4. Updated documentation as well as Solver::Summary::FullReport
to reflect these changes.

Change-Id: I5ab930bc15e90906b648bc399b551e6bd5d6498f

internal/ceres/solver.cc

diff --git a/internal/ceres/solver.cc b/internal/ceres/solver.cc
index 5d8447d..3b67746 100644
--- a/internal/ceres/solver.cc
+++ b/internal/ceres/solver.cc
@@ -120,7 +120,8 @@
       inner_iterations_used(false),
       preconditioner_type(IDENTITY),
       trust_region_strategy_type(LEVENBERG_MARQUARDT),
-      sparse_linear_algebra_library(SUITE_SPARSE),
+      dense_linear_algebra_library_type(EIGEN),
+      sparse_linear_algebra_library_type(SUITE_SPARSE),
       line_search_direction_type(LBFGS),
       line_search_type(ARMIJO) {
 }
@@ -192,6 +193,15 @@
     // TRUST_SEARCH HEADER
     StringAppendF(&report, "\nMinimizer                 %19s\n",
                   "TRUST_REGION");
+
+    if (linear_solver_type_used == DENSE_NORMAL_CHOLESKY ||
+        linear_solver_type_used == DENSE_SCHUR ||
+        linear_solver_type_used == DENSE_QR) {
+      StringAppendF(&report, "\nDense linear algebra library  %15s\n",
+                    DenseLinearAlgebraLibraryTypeToString(
+                        dense_linear_algebra_library_type));
+    }
+
     if (linear_solver_type_used == SPARSE_NORMAL_CHOLESKY ||
         linear_solver_type_used == SPARSE_SCHUR ||
         (linear_solver_type_used == ITERATIVE_SCHUR &&
@@ -199,7 +209,7 @@
           preconditioner_type == CLUSTER_TRIDIAGONAL))) {
       StringAppendF(&report, "\nSparse linear algebra library %15s\n",
                     SparseLinearAlgebraLibraryTypeToString(
-                                sparse_linear_algebra_library));
+                        sparse_linear_algebra_library_type));
     }
 
     StringAppendF(&report, "Trust region strategy     %19s",