There is one prototype of trsv
            available, please see below. 
trsv( const MatrixA& a, VectorX& x );
            trsv (short for triangular
            solve system of equations) provides a C++ interface to BLAS routines
            STRSV, DTRSV, CTRSV, and ZTRSV. trsv
            solves one of the systems of equations
          
A*x = b, or A'*x = b, or conjg( A' )*x = b,
where b and x are n element vectors and A is an n by n unit, or non-unit, upper or lower triangular matrix.
No test for singularity or near-singularity is included in this routine. Such tests must be performed before calling this routine.
            The selection of the BLAS routine is done during compile-time, and is
            determined by the type of values contained in type MatrixA.
            The type of values is obtained through the value_type
            meta-function typename value_type<MatrixA>::type. Table X below illustrates to
            which specific routine this dispatching will take place.
          
Table 1.80. Dispatching of trsv.
| Value type of MatrixA | BLAS routine | CBLAS routine | CUBLAS routine | 
|---|---|---|---|
| 
                       | STRSV | cblas_strsv | cublasStrsv | 
| 
                       | DTRSV | cblas_dtrsv | cublasDtrsv | 
| 
                       | CTRSV | cblas_ctrsv | cublasCtrsv | 
| 
                       | ZTRSV | cblas_ztrsv | Unavailable | 
            The original routines STRSV, DTRSV, CTRSV, and ZTRSV have eight arguments,
            whereas trsv requires
            two arguments.
          
            Defined in header boost/numeric/bindings/blas/level2/trsv.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/blas/level2/trsv.hpp> using namespace boost::numeric::bindings; blas::trsv( x, y, z );
this will output
[5] 0 1 2 3 4 5