zpotri.f man page

zpotri.f —

Synopsis

Functions/Subroutines

subroutine zpotri (UPLO, N, A, LDA, INFO)
ZPOTRI

Function/Subroutine Documentation

subroutine zpotri (characterUPLO, integerN, complex*16, dimension( lda, * )A, integerLDA, integerINFO)

ZPOTRI

Purpose:

ZPOTRI computes the inverse of a complex Hermitian positive definite
matrix A using the Cholesky factorization A = U**H*U or A = L*L**H
computed by ZPOTRF.

Parameters:

UPLO

UPLO is CHARACTER*1
= 'U':  Upper triangle of A is stored;
= 'L':  Lower triangle of A is stored.

N

N is INTEGER
The order of the matrix A.  N >= 0.

A

A is COMPLEX*16 array, dimension (LDA,N)
On entry, the triangular factor U or L from the Cholesky
factorization A = U**H*U or A = L*L**H, as computed by
ZPOTRF.
On exit, the upper or lower triangle of the (Hermitian)
inverse of A, overwriting the input factor U or L.

LDA

LDA is INTEGER
The leading dimension of the array A.  LDA >= max(1,N).

INFO

INFO is INTEGER
= 0:  successful exit
< 0:  if INFO = -i, the i-th argument had an illegal value
> 0:  if INFO = i, the (i,i) element of the factor U or L is
      zero, and the inverse could not be computed.

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

November 2011

Definition at line 96 of file zpotri.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

zpotri(3) is an alias of zpotri.f(3).

Sat Nov 16 2013 Version 3.4.2 LAPACK