There is one prototype of ungtr
available, please see below.
ungtr( const int_t n, MatrixA& a, const VectorTAU& tau );
ungtr
(short for $FRIENDLY_NAME)
provides a C++ interface to LAPACK routines SORGTR, DORGTR, CUNGTR, and
ZUNGTR. ungtr
generates
a complex unitary matrix Q which is defined as the product of n-1 elementary
reflectors of order N, as returned by ZHETRD:
if UPLO = 'U', Q = H(n-1) . . . H(2) H(1),
if UPLO = 'L', Q = H(1) H(2) . . . H(n-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 1.326. Dispatching of ungtr
Value type of MatrixA |
LAPACK routine |
---|---|
|
SORGTR |
|
DORGTR |
|
CUNGTR |
|
ZUNGTR |
Defined in header boost/numeric/bindings/lapack/computational/ungtr.hpp
.
Parameters
The definition of term 1
The definition of term 2
The definition of term 3.
Definitions may contain paragraphs.
#include <boost/numeric/bindings/lapack/computational/ungtr.hpp> using namespace boost::numeric::bindings; lapack::ungtr( x, y, z );
this will output
[5] 0 1 2 3 4 5