core: add typedef for SparseMatrix

include/eigenpy/eigen-typedef.hpp

@@ -32,6 +32,7 @@
   EIGENPY_MAKE_FIXED_TYPEDEFS(Type, Options, TypeSuffix, 2)           \
   EIGENPY_MAKE_FIXED_TYPEDEFS(Type, Options, TypeSuffix, 3)           \
   EIGENPY_MAKE_FIXED_TYPEDEFS(Type, Options, TypeSuffix, 4)           \
-  EIGENPY_MAKE_TYPEDEFS(Type, Options, TypeSuffix, 1, 1)
+  EIGENPY_MAKE_TYPEDEFS(Type, Options, TypeSuffix, 1, 1)              \
+  typedef Eigen::SparseMatrix<Scalar, Options> SparseMatrixX##TypeSuffix
 
 #endif  // ifndef __eigenpy_eigen_typedef_hpp__

include/eigenpy/eigenpy.hpp

@@ -58,7 +58,7 @@ EIGEN_DONT_INLINE void exposeType() {
   ENABLE_SPECIFIC_MATRIX_TYPE(RowVectorXs);
   ENABLE_SPECIFIC_MATRIX_TYPE(MatrixXs);
 
-  enableEigenPySpecific<Eigen::SparseMatrix<Scalar, Options> >();
+  enableEigenPySpecific<SparseMatrixXs>();
 }
 
 template <typename Scalar>