There is one prototype of upgtr
available, please see below.
upgtr( const char uplo, const VectorAP& ap, const VectorTAU& tau, MatrixQ& q );
upgtr (short for $FRIENDLY_NAME)
provides a C++ interface to LAPACK routines SOPGTR, DOPGTR, CUPGTR, and
ZUPGTR. upgtr generates
a complex unitary matrix Q which is defined as the product of n-1 elementary
reflectors H(i) of order n, as returned by ZHPTRD using packed storage:
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 VectorAP.
The type of values is obtained through the value_type
meta-function typename value_type<VectorAP>::type. The dispatching table below illustrates
to which specific routine the code path will be generated.
Table 1.328. Dispatching of upgtr
|
Value type of VectorAP |
LAPACK routine |
|---|---|
|
|
SOPGTR |
|
|
DOPGTR |
|
|
CUPGTR |
|
|
ZUPGTR |
Defined in header boost/numeric/bindings/lapack/computational/upgtr.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/upgtr.hpp> using namespace boost::numeric::bindings; lapack::upgtr( x, y, z );
this will output
[5] 0 1 2 3 4 5