Prototype

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

tpcon( const char norm, const MatrixAP& ap, Scalar > );

Description

tpcon (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines STPCON, DTPCON, CTPCON, and ZTPCON. tpcon estimates the reciprocal of the condition number of a packed triangular matrix A, in either the 1-norm or the infinity-norm.

The norm of A is computed and an estimate is obtained for norm(inv(A)), then the reciprocal of the condition number is computed as RCOND = 1 / ( norm(A) * 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 MatrixAP. The type of values is obtained through the value_type meta-function typename value_type<MatrixAP>::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/tpcon.hpp.

Parameters or Requirements on Types

Complexity

Example

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

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

this will output

[5] 0 1 2 3 4 5

Notes

See Also