zpotri

NAME

zpotri - compute 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 ZPOTRI( UPLO, N, A, LDA, INFO)
  CHARACTER * 1 UPLO
  DOUBLE COMPLEX A(LDA,*)
  INTEGER N, LDA, INFO
 
  SUBROUTINE ZPOTRI_64( UPLO, N, A, LDA, INFO)
  CHARACTER * 1 UPLO
  DOUBLE COMPLEX A(LDA,*)
  INTEGER*8 N, LDA, INFO

F95 INTERFACE

  SUBROUTINE POTRI( UPLO, [N], A, [LDA], [INFO])
  CHARACTER(LEN=1) :: UPLO
  COMPLEX(8), DIMENSION(:,:) :: A
  INTEGER :: N, LDA, INFO
 
  SUBROUTINE POTRI_64( UPLO, [N], A, [LDA], [INFO])
  CHARACTER(LEN=1) :: UPLO
  COMPLEX(8), DIMENSION(:,:) :: A
  INTEGER(8) :: N, LDA, INFO

C INTERFACE

#include <sunperf.h>

void zpotri(char uplo, int n, doublecomplex *a, int lda, int *info);

void zpotri_64(char uplo, long n, doublecomplex *a, long lda, long *info);

PURPOSE

zpotri 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)
* N (input): The order of the matrix A. N >= 0.
* A (input/output): 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): The leading dimension of the array A. LDA >= max(1,N).
* INFO (output)