cpotri (l) - Linux Manuals
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 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.
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 1-norm) 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 two-norm)
- 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 two-norm)
- cporfs (l) - improves the computed solution to a system of linear equations when the coefficient matrix is Hermitian positive definite,