cpotri (l)  Linux Man Pages
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
Command to display cpotri
manual in Linux: $ man l cpotri
NAME
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
SYNOPSIS
 SUBROUTINE CPOTRI(

UPLO, N, A, LDA, INFO )

CHARACTER
UPLO

INTEGER
INFO, LDA, N

COMPLEX
A( LDA, * )
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.
ARGUMENTS
 UPLO (input) CHARACTER*1

= aqUaq: Upper triangle of A is stored;
= aqLaq: Lower triangle of A is stored.
 N (input) INTEGER

The order of the matrix A. N >= 0.
 A (input/output) 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 (input) INTEGER

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

= 0: successful exit
< 0: if INFO = i, the ith 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.
Pages related to cpotri
 cpotri (3)
 cpotrf (l)  computes the Cholesky factorization of a complex Hermitian positive definite matrix A
 cpotrs (l)  solves a system of linear equations A*X = B with a Hermitian positive definite matrix A using the Cholesky factorization A = U**H*U or A = L*L**H computed by CPOTRF
 cpotf2 (l)  computes the Cholesky factorization of a complex Hermitian positive definite matrix A
 cpocon (l)  estimates the reciprocal of the condition number (in the 1norm) of a complex Hermitian positive definite matrix using the Cholesky factorization A = U**H*U or A = L*L**H computed by CPOTRF
 cpoequ (l)  computes row and column scalings intended to equilibrate a Hermitian positive definite matrix A and reduce its condition number (with respect to the twonorm)
 cpoequb (l)  computes row and column scalings intended to equilibrate a symmetric positive definite matrix A and reduce its condition number (with respect to the twonorm)
 cporfs (l)  improves the computed solution to a system of linear equations when the coefficient matrix is Hermitian positive definite,