There are two prototypes of pttrs
            available, please see below. 
pttrs( const VectorD& d, const VectorE& e, MatrixB& b );
pttrs( const char uplo, const VectorD& d, const VectorE& e, MatrixB& b );
            pttrs (short for $FRIENDLY_NAME)
            provides a C++ interface to LAPACK routines SPTTRS, DPTTRS, CPTTRS, and
            ZPTTRS. pttrs solves
            a tridiagonal system of the form A * X = B using the factorization A
            = U'*D*U or A = L*D*L' computed by ZPTTRF. D is a diagonal matrix specified
            in the vector D, U (or L) is a unit bidiagonal matrix whose superdiagonal
            (subdiagonal) is specified in the vector E, and X and B are N by NRHS
            matrices.
          
            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.
          
Table 1.285. Dispatching of pttrs
| Value type of VectorD | LAPACK routine | 
|---|---|
| 
                       | SPTTRS | 
| 
                       | DPTTRS | 
| 
                       | CPTTRS | 
| 
                       | ZPTTRS | 
            Defined in header boost/numeric/bindings/lapack/computational/pttrs.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/pttrs.hpp> using namespace boost::numeric::bindings; lapack::pttrs( x, y, z );
this will output
[5] 0 1 2 3 4 5