There is one prototype of ptcon
available, please see below.
ptcon( const VectorD& d, const VectorE& e, const Scalar >, Scalar > );
ptcon
(short for $FRIENDLY_NAME)
provides a C++ interface to LAPACK routines SPTCON, DPTCON, CPTCON, and
ZPTCON. ptcon
computes
the reciprocal of the condition number (in the 1-norm) of a complex Hermitian
positive definite tridiagonal matrix using the factorization A = LD*LH or A = U*H*D*U
computed by ZPTTRF.
Norm(inv(A)) is computed by a direct method, and the reciprocal of the condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))).
The selection of the LAPACK routine is done during compile-time, and
is determined by the type of values contained in type VectorD
.
The type of values is obtained through the value_type
meta-function typename value_type<VectorD>::type
. The dispatching table below illustrates
to which specific routine the code path will be generated.
Table 1.282. Dispatching of ptcon
Value type of VectorD |
LAPACK routine |
---|---|
|
SPTCON |
|
DPTCON |
|
CPTCON |
|
ZPTCON |
Defined in header boost/numeric/bindings/lapack/computational/ptcon.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/ptcon.hpp> using namespace boost::numeric::bindings; lapack::ptcon( x, y, z );
this will output
[5] 0 1 2 3 4 5