1 files changed, 36 insertions, 1 deletions
diff --git a/internal/ceres/types.cc b/internal/ceres/types.cc
index 164185e..a97f1a5 100644
--- a/internal/ceres/types.cc
+++ b/internal/ceres/types.cc
@@ -101,7 +101,6 @@ const char* SparseLinearAlgebraLibraryTypeToString(
   }
 }
 
-
 bool StringToSparseLinearAlgebraLibraryType(
     string value,
     SparseLinearAlgebraLibraryType* type) {
@@ -111,6 +110,25 @@ bool StringToSparseLinearAlgebraLibraryType(
   return false;
 }
 
+const char* DenseLinearAlgebraLibraryTypeToString(
+    DenseLinearAlgebraLibraryType type) {
+  switch (type) {
+    CASESTR(EIGEN);
+    CASESTR(LAPACK);
+    default:
+      return "UNKNOWN";
+  }
+}
+
+bool StringToDenseLinearAlgebraLibraryType(
+    string value,
+    DenseLinearAlgebraLibraryType* type) {
+  UpperCase(&value);
+  STRENUM(EIGEN);
+  STRENUM(LAPACK);
+  return false;
+}
+
 const char* TrustRegionStrategyTypeToString(TrustRegionStrategyType type) {
   switch (type) {
     CASESTR(LEVENBERG_MARQUARDT);
@@ -318,4 +336,21 @@ bool IsSparseLinearAlgebraLibraryTypeAvailable(
   return false;
 }
 
+bool IsDenseLinearAlgebraLibraryTypeAvailable(
+    DenseLinearAlgebraLibraryType type) {
+  if (type == EIGEN) {
+    return true;
+  }
+  if (type == LAPACK) {
+#ifdef CERES_NO_LAPACK
+    return false;
+#else
+    return true;
+#endif
+  }
+
+  LOG(WARNING) << "Unknown dense linear algebra library " << type;
+  return false;
+}
+
 }  // namespace ceres