trtrs

Prototype

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

trtrs( const MatrixA& a, MatrixB& b );

Description

trtrs (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines STRTRS, DTRTRS, CTRTRS, and ZTRTRS. trtrs 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, 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 MatrixA. The type of values is obtained through the value_type meta-function typename value_type<MatrixA>::type. The dispatching table below illustrates to which specific routine the code path will be generated.

Table 1.307. Dispatching of trtrs

Value type of MatrixA	LAPACK routine
`float`	STRTRS
`double`	DTRTRS
`complex<float>`	CTRTRS
`complex<double>`	ZTRTRS

Definition

Defined in header boost/numeric/bindings/lapack/computational/trtrs.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/trtrs.hpp>
using namespace boost::numeric::bindings;

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

this will output

[5] 0 1 2 3 4 5