There is one prototype of tgsna
            available, please see below. 
tgsna( const char job, const char howmny, const VectorSELECT& select, const int_t n, const MatrixA& a, const MatrixB& b, const MatrixVL& vl, const MatrixVR& vr, VectorS& s, VectorDIF& dif, const int_t mm, int_t& m );
            tgsna (short for $FRIENDLY_NAME)
            provides a C++ interface to LAPACK routines STGSNA, DTGSNA, CTGSNA, and
            ZTGSNA. tgsna estimates
            reciprocal condition numbers for specified eigenvalues and/or eigenvectors
            of a matrix pair (A, B).
          
(A, B) must be in generalized Schur canonical form, that is, A and B are both upper triangular.
            The selection of the LAPACK routine is done during compile-time, and
            is determined by the type of values contained in type VectorSELECT.
            The type of values is obtained through the value_type
            meta-function typename value_type<VectorSELECT>::type. The dispatching table below illustrates
            to which specific routine the code path will be generated.
          
Table 1.337. Dispatching of tgsna
| Value type of VectorSELECT | LAPACK routine | 
|---|---|
| 
                       | STGSNA | 
| 
                       | DTGSNA | 
| 
                       | CTGSNA | 
| 
                       | ZTGSNA | 
            Defined in header boost/numeric/bindings/lapack/computational/tgsna.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/computational/tgsna.hpp> using namespace boost::numeric::bindings; lapack::tgsna( x, y, z );
this will output
[5] 0 1 2 3 4 5