zhetri - compute the inverse of a complex Hermitian indefinite matrix A using the factorization A = U*D*U**H or A = L*D*L**H computed by CHETRF
SUBROUTINE ZHETRI( UPLO, N, A, LDA, IPIVOT, WORK, INFO) CHARACTER * 1 UPLO DOUBLE COMPLEX A(LDA,*), WORK(*) INTEGER N, LDA, INFO INTEGER IPIVOT(*)
SUBROUTINE ZHETRI_64( UPLO, N, A, LDA, IPIVOT, WORK, INFO) CHARACTER * 1 UPLO DOUBLE COMPLEX A(LDA,*), WORK(*) INTEGER*8 N, LDA, INFO INTEGER*8 IPIVOT(*)
SUBROUTINE HETRI( UPLO, [N], A, [LDA], IPIVOT, [WORK], [INFO]) CHARACTER(LEN=1) :: UPLO COMPLEX(8), DIMENSION(:) :: WORK COMPLEX(8), DIMENSION(:,:) :: A INTEGER :: N, LDA, INFO INTEGER, DIMENSION(:) :: IPIVOT
SUBROUTINE HETRI_64( UPLO, [N], A, [LDA], IPIVOT, [WORK], [INFO]) CHARACTER(LEN=1) :: UPLO COMPLEX(8), DIMENSION(:) :: WORK COMPLEX(8), DIMENSION(:,:) :: A INTEGER(8) :: N, LDA, INFO INTEGER(8), DIMENSION(:) :: IPIVOT
#include <sunperf.h>
void zhetri(char uplo, int n, doublecomplex *a, int lda, int *ipivot, int *info);
void zhetri_64(char uplo, long n, doublecomplex *a, long lda, long *ipivot, long *info);
zhetri computes the inverse of a complex Hermitian indefinite matrix A using the factorization A = U*D*U**H or A = L*D*L**H computed by CHETRF.
= 'L': Lower triangular, form is A = L*D*L**H.
On exit, if INFO = 0, the (Hermitian) inverse of the original matrix. If UPLO = 'U', the upper triangular part of the inverse is formed and the part of A below the diagonal is not referenced; if UPLO = 'L' the lower triangular part of the inverse is formed and the part of A above the diagonal is not referenced.
dimension(N)
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value
> 0: if INFO = i, D(i,i) = 0; the matrix is singular and its inverse could not be computed.