cpotri3
Part of cpotri.f(3).
Usage
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
Univ. of Colorado Denver
NAG Ltd.
Definition at line 94 of file cpotri.f.
Releases
14 releases since Debian 1.3 (Bo); the text changed 11 times.