Prototype

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

tprfs( const MatrixAP& ap, const MatrixB& b, const MatrixX& x,
        VectorFERR& ferr, VectorBERR& berr );

Description

tprfs (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines STPRFS, DTPRFS, CTPRFS, and ZTPRFS. tprfs provides error bounds and backward error estimates for the solution to a system of linear equations with a triangular packed coefficient matrix.

The solution matrix X must be computed by ZTPTRS or some other means before entering this routine. tprfs does not do iterative refinement because doing so cannot improve the backward error.

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/tprfs.hpp.

Parameters or Requirements on Types

Complexity

Example

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

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

this will output

[5] 0 1 2 3 4 5

Notes

See Also