Prototype

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

gebrd( MatrixA& a, VectorD& d, VectorE& e, VectorTAUQ& tauq,
        VectorTAUP& taup );

Description

gebrd (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines SGEBRD, DGEBRD, CGEBRD, and ZGEBRD. gebrd reduces a general complex M-by-N matrix A to upper or lower bidiagonal form B by a unitary transformation: Q**H * A * P = B.

If m >= n, B is upper bidiagonal; if m < n, B is lower bidiagonal.

The selection of the LAPACK 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. The dispatching table below illustrates to which specific routine the code path will be generated.

Definition

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

Parameters or Requirements on Types

Complexity

Example

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

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

this will output

[5] 0 1 2 3 4 5

Notes

See Also