Prototype

There is one prototype of ggbak available, please see below.

ggbak( const char job, const Side side, const int_t ilo,
        const int_t ihi, const VectorLSCALE& lscale,
        const VectorRSCALE& rscale, MatrixV& v );

Description

ggbak (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines SGGBAK, DGGBAK, CGGBAK, and ZGGBAK. ggbak forms the right or left eigenvectors of a complex generalized eigenvalue problem A*x = lambda*B*x, by backward transformation on the computed eigenvectors of the balanced pair of matrices output by ZGGBAL.

The selection of the LAPACK routine is done during compile-time, and is determined by the type of values contained in type VectorLSCALE. The type of values is obtained through the value_type meta-function typename value_type<VectorLSCALE>::type. The dispatching table below illustrates to which specific routine the code path will be generated.

Definition

Defined in header boost/numeric/bindings/lapack/computational/ggbak.hpp.

Parameters or Requirements on Types

Complexity

Example

#include <boost/numeric/bindings/lapack/computational/ggbak.hpp>
using namespace boost::numeric::bindings;

lapack::ggbak( x, y, z );

this will output

[5] 0 1 2 3 4 5

Notes

See Also