diff options
Diffstat (limited to 'internal/ceres/lapack.h')
| -rw-r--r-- | internal/ceres/lapack.h | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/internal/ceres/lapack.h b/internal/ceres/lapack.h index 4f3a88c..8933c2c 100644 --- a/internal/ceres/lapack.h +++ b/internal/ceres/lapack.h @@ -31,6 +31,10 @@ #ifndef CERES_INTERNAL_LAPACK_H_ #define CERES_INTERNAL_LAPACK_H_ +#include <string> +#include "ceres/internal/port.h" +#include "ceres/linear_solver.h" + namespace ceres { namespace internal { @@ -47,10 +51,14 @@ class LAPACK { // // This function uses the LAPACK dpotrf and dpotrs routines. // - // The return value is zero if the solve is successful. - static int SolveInPlaceUsingCholesky(int num_rows, - const double* lhs, - double* rhs_and_solution); + // The return value and the message string together describe whether + // the solver terminated successfully or not and if so, what was the + // reason for failure. + static LinearSolverTerminationType SolveInPlaceUsingCholesky( + int num_rows, + const double* lhs, + double* rhs_and_solution, + string* message); // The SolveUsingQR function requires a buffer for its temporary // computation. This function given the size of the lhs matrix will @@ -73,13 +81,17 @@ class LAPACK { // // This function uses the LAPACK dgels routine. // - // The return value is zero if the solve is successful. - static int SolveUsingQR(int num_rows, - int num_cols, - const double* lhs, - int work_size, - double* work, - double* rhs_and_solution); + // The return value and the message string together describe whether + // the solver terminated successfully or not and if so, what was the + // reason for failure. + static LinearSolverTerminationType SolveInPlaceUsingQR( + int num_rows, + int num_cols, + const double* lhs, + int work_size, + double* work, + double* rhs_and_solution, + string* message); }; } // namespace internal |