tptrs

Prototype

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

tptrs( const MatrixAP& ap, MatrixB& b );

Description

tptrs (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines STPTRS, DTPTRS, CTPTRS, and ZTPTRS. tptrs solves a triangular system of the form

A * X = B, A*T * X = B, or A*H * X = B,

where A is a triangular matrix of order N stored in packed format, and B is an N-by-NRHS matrix. A check is made to verify that A is nonsingular.

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.

Table 1.303. Dispatching of tptrs

Value type of MatrixAP	LAPACK routine
`float`	STPTRS
`double`	DTPTRS
`complex<float>`	CTPTRS
`complex<double>`	ZTPTRS

Definition

Defined in header boost/numeric/bindings/lapack/computational/tptrs.hpp.

Parameters or Requirements on Types

Parameters

MatrixA

The definition of term 1

MatrixB

The definition of term 2

MatrixC

The definition of term 3.

Definitions may contain paragraphs.

Complexity

Example

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

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

this will output

[5] 0 1 2 3 4 5