cpotri-f(3)

cpotri.f –

Synopsis

Functions/Subroutines

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

Function/Subroutine Documentation

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

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

Univ. of Colorado Denver

NAG Ltd.

Date:

November 2011

Definition at line 96 of file cpotri.f.

Author

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