Prototype

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

gbbrd( const char vect, MatrixAB& ab, VectorD& d, VectorE& e, MatrixQ& q,
        MatrixPT& pt, MatrixC& c );

Description

gbbrd (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines SGBBRD, DGBBRD, CGBBRD, and ZGBBRD. gbbrd reduces a complex general m-by-n band matrix A to real upper bidiagonal form B by a unitary transformation: Q' * A * P = B.

The routine computes B, and optionally forms Q or P', or computes Q'*C for a given matrix C.

The selection of the LAPACK routine is done during compile-time, and is determined by the type of values contained in type MatrixAB. The type of values is obtained through the value_type meta-function typename value_type<MatrixAB>::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/gbbrd.hpp.

Parameters or Requirements on Types

Complexity

Example

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

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

this will output

[5] 0 1 2 3 4 5

Notes

See Also