Prototype

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

potrf( MatrixA& a );

Description

potrf (short for $FRIENDLY_NAME) provides a C++ interface to LAPACK routines SPOTRF, DPOTRF, CPOTRF, and ZPOTRF. potrf computes the Cholesky factorization of a complex Hermitian positive definite matrix A.

The factorization has the form A = U*H * U, if UPLO = 'U', or A = L * L*H, if UPLO = 'L', where U is an upper triangular matrix and L is lower triangular.

This is the block version of the algorithm, calling Level 3 BLAS.

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.

Definition

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

Parameters or Requirements on Types

Complexity

Example

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

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

this will output

[5] 0 1 2 3 4 5

Notes

See Also