csytri man page on Scientific

Man page or keyword search:  
man Server   26626 pages
apropos Keyword Search (all sections)
Output format
Scientific logo
[printable version]

CSYTRI(1)		 LAPACK routine (version 3.2)		     CSYTRI(1)

NAME
       CSYTRI  - computes the inverse of a complex symmetric indefinite matrix
       A using the factorization A = U*D*U**T or  A  =	L*D*L**T  computed  by
       CSYTRF

SYNOPSIS
       SUBROUTINE CSYTRI( UPLO, N, A, LDA, IPIV, WORK, INFO )

	   CHARACTER	  UPLO

	   INTEGER	  INFO, LDA, N

	   INTEGER	  IPIV( * )

	   COMPLEX	  A( LDA, * ), WORK( * )

PURPOSE
       CSYTRI  computes the inverse of a complex symmetric indefinite matrix A
       using the factorization A =  U*D*U**T  or  A  =	L*D*L**T  computed  by
       CSYTRF.

ARGUMENTS
       UPLO    (input) CHARACTER*1
	       Specifies  whether  the details of the factorization are stored
	       as an upper or lower triangular matrix.	= 'U':	Upper trianguā€
	       lar, form is A = U*D*U**T;
	       = 'L':  Lower triangular, form is A = L*D*L**T.

       N       (input) INTEGER
	       The order of the matrix A.  N >= 0.

       A       (input/output) COMPLEX array, dimension (LDA,N)
	       On  entry, the block diagonal matrix D and the multipliers used
	       to obtain the factor U or L as computed by CSYTRF.  On exit, if
	       INFO  =	0, the (symmetric) 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.

       LDA     (input) INTEGER
	       The leading dimension of the array A.  LDA >= max(1,N).

       IPIV    (input) INTEGER array, dimension (N)
	       Details	of  the	 interchanges  and the block structure of D as
	       determined by CSYTRF.

       WORK    (workspace) COMPLEX array, dimension (2*N)

       INFO    (output) INTEGER
	       = 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.

 LAPACK routine (version 3.2)	 November 2008			     CSYTRI(1)
[top]

List of man pages available for Scientific

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net