##### orghr

###### Prototype

There is one prototype of `orghr` available, please see below.

    orghr( const int_t n, const int_t ilo,
            const int_t ihi, MatrixA& a, const VectorTAU& tau );

###### Description

`orghr` (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines SORGHR and DORGHR. `orghr` generates a real orthogonal matrix Q which is defined as the product of IHI-ILO elementary reflectors of order N, as returned by DGEHRD:

Q = H(ilo) H(ilo+1) . . . H(ihi-1).

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.

Table 1.229. Dispatching of orghr

Value type of MatrixA | LAPACK routine
--- | ---
`float` | SORGHR
`double` | DORGHR

###### Definition

Defined in header `boost/numeric/bindings/lapack/computational/orghr.hpp`.

###### Parameters or Requirements on Types

Parameters

MatrixA

  The definition of term 1

MatrixB

  The definition of term 2

MatrixC

  The definition of term 3.

  Definitions may contain paragraphs.

###### Complexity

###### Example

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

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

this will output

    [5] 0 1 2 3 4 5

###### Notes

###### See Also

- Originating Fortran source files sorghr.f and dorghr.f at Netlib.