add slam_gmapping

slam_gmapping/openslam_gmapping/scanmatcher/eig3.h

@@ -0,0 +1,11 @@
+
+/* Eigen-decomposition for symmetric 3x3 real matrices.
+   Public domain, copied from the public domain Java library JAMA. */
+
+#ifndef _eig_h
+
+/* Symmetric matrix A => eigenvectors in columns of V, corresponding
+   eigenvalues in d. */
+void eigen_decomposition(double A[3][3], double V[3][3], double d[3]);
+
+#endif