There is one prototype of stevx
            available, please see below. 
stevx( const char jobz, const char range, const int_t n, VectorD& d, VectorE& e, const Scalar >, const Scalar >, const int_t il, const int_t iu, const Scalar >, int_t& m, VectorW& w, MatrixZ& z, VectorIFAIL& ifail );
            stevx (short for $FRIENDLY_NAME)
            provides a C++ interface to LAPACK routines SSTEVX and DSTEVX. stevx computes selected eigenvalues
            and, optionally, eigenvectors of a real symmetric tridiagonal matrix
            A. Eigenvalues and eigenvectors can be selected by specifying either
            a range of values or a range of indices for the desired eigenvalues.
          
            The selection of the LAPACK routine is done during compile-time, and
            is determined by the type of values contained in type VectorD.
            The type of values is obtained through the value_type
            meta-function typename value_type<VectorD>::type. The dispatching table below illustrates
            to which specific routine the code path will be generated.
          
            Defined in header boost/numeric/bindings/lapack/driver/stevx.hpp.
          
Parameters
The definition of term 1
The definition of term 2
The definition of term 3.
Definitions may contain paragraphs.
#include <boost/numeric/bindings/lapack/driver/stevx.hpp> using namespace boost::numeric::bindings; lapack::stevx( x, y, z );
this will output
[5] 0 1 2 3 4 5