Prototype

There is one prototype of geqp3 available, please see below.

geqp3( MatrixA& a, VectorJPVT& jpvt, VectorTAU& tau );

Description

geqp3 (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines SGEQP3, DGEQP3, CGEQP3, and ZGEQP3. geqp3 computes a QR factorization with column pivoting of a matrix A: A*P = Q*R using Level 3 BLAS.

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/geqp3.hpp.

Parameters or Requirements on Types

Complexity

Example

#include <boost/numeric/bindings/lapack/computational/geqp3.hpp>
using namespace boost::numeric::bindings;

lapack::geqp3( x, y, z );

this will output

[5] 0 1 2 3 4 5

Notes

See Also