There is one prototype of geru
            available, please see below. 
geru( const Scalar alpha, const VectorX& x, const VectorY& y, MatrixA& a );
            geru (short for TODO)
            provides a C++ interface to BLAS routines CGERU and ZGERU. geru performs the rank 1 operation
          
A := alpha*x*y' + A,
where alpha is a scalar, x is an m element vector, y is an n element vector and A is an m by n matrix.
            The selection of the BLAS routine is done during compile-time, and is
            determined by the type of values contained in type VectorX.
            The type of values is obtained through the value_type
            meta-function typename value_type<VectorX>::type. Table X below illustrates to
            which specific routine this dispatching will take place.
          
Table 1.40. Dispatching of geru.
| Value type of VectorX | BLAS routine | CBLAS routine | CUBLAS routine | 
|---|---|---|---|
| 
                       | CGERU | cblas_cgeru | cublasCgeru | 
| 
                       | ZGERU | cblas_zgeru | Unavailable | 
            The original routines CGERU and ZGERU have nine arguments, whereas geru requires four arguments.
          
            Defined in header boost/numeric/bindings/blas/level2/geru.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/geru.hpp> using namespace boost::numeric::bindings; blas::geru( x, y, z );
this will output
[5] 0 1 2 3 4 5