dpotri.f

Section: LAPACK (3)
Updated: Tue Nov 14 2017
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NAME

dpotri.f  

SYNOPSIS


 

Functions/Subroutines


subroutine dpotri (UPLO, N, A, LDA, INFO)
DPOTRI  

Function/Subroutine Documentation

 

subroutine dpotri (character UPLO, integer N, double precision, dimension( lda, * ) A, integer LDA, integer INFO)

DPOTRI

Purpose:

 DPOTRI computes the inverse of a real symmetric positive definite
 matrix A using the Cholesky factorization A = U**T*U or A = L*L**T
 computed by DPOTRF.


 

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 DOUBLE PRECISION array, dimension (LDA,N)
          On entry, the triangular factor U or L from the Cholesky
          factorization A = U**T*U or A = L*L**T, as computed by
          DPOTRF.
          On exit, the upper or lower triangle of the (symmetric)
          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.

Date:

December 2016

Definition at line 97 of file dpotri.f.  

Author

Generated automatically by Doxygen for LAPACK from the source code.


 

Index

NAME
SYNOPSIS
Functions/Subroutines
Function/Subroutine Documentation
subroutine dpotri (character UPLO, integer N, double precision, dimension( lda, * ) A, integer LDA, integer INFO)
Author
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