cpotri.f man page

cpotri.f

Synopsis

Functions/Subroutines

subroutine cpotri (UPLO, N, A, LDA, INFO)
CPOTRI

Function/Subroutine Documentation

subroutine cpotri (character UPLO, integer N, complex, dimension( lda, * ) A, integer LDA, integer INFO)

CPOTRI

Purpose:

``` CPOTRI 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 CPOTRF.```
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 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
CPOTRF.
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

NAG Ltd.

Date:

December 2016

Definition at line 97 of file cpotri.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

The man page cpotri(3) is an alias of cpotri.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK