There is one prototype of ger
available, please see below.
ger( const Scalar >, const VectorX& x, const VectorY& y, MatrixA& a );
ger
(short for generic
rank-1 update) provides a C++ interface to BLAS routines SGER and DGER.
ger
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 1.38. Dispatching of ger.
Value type of VectorX |
BLAS routine |
CBLAS routine |
CUBLAS routine |
---|---|---|---|
|
SGER |
cblas_sger |
cublasSger |
|
DGER |
cblas_dger |
cublasDger |
The original routines SGER and DGER have nine arguments, whereas ger
requires four arguments.
Defined in header boost/numeric/bindings/blas/level2/ger.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/ger.hpp> using namespace boost::numeric::bindings; blas::ger( x, y, z );
this will output
[5] 0 1 2 3 4 5