ztrti2.f(3) [debian man page]

ztrti2.f(3)							      LAPACK							       ztrti2.f(3)

NAME

       ztrti2.f -

SYNOPSIS

   Functions/Subroutines
       subroutine ztrti2 (UPLO, DIAG, N, A, LDA, INFO)
	   ZTRTI2

Function/Subroutine Documentation
   subroutine ztrti2 (characterUPLO, characterDIAG, integerN, complex*16, dimension( lda, * )A, integerLDA, integerINFO)
       ZTRTI2

       Purpose:

	    ZTRTI2 computes the inverse of a complex upper or lower triangular
	    matrix.

	    This is the Level 2 BLAS version of the algorithm.

       Parameters:
	   UPLO

		     UPLO is CHARACTER*1
		     Specifies whether the matrix A is upper or lower triangular.
		     = 'U':  Upper triangular
		     = 'L':  Lower triangular

	   DIAG

		     DIAG is CHARACTER*1
		     Specifies whether or not the matrix A is unit triangular.
		     = 'N':  Non-unit triangular
		     = 'U':  Unit triangular

	   N

		     N is INTEGER
		     The order of the matrix A.  N >= 0.

	   A

		     A is COMPLEX*16 array, dimension (LDA,N)
		     On entry, the triangular matrix A.  If UPLO = 'U', the
		     leading n by n upper triangular part of the array A contains
		     the upper triangular matrix, and the strictly lower
		     triangular part of A is not referenced.  If UPLO = 'L', the
		     leading n by n lower triangular part of the array A contains
		     the lower triangular matrix, and the strictly upper
		     triangular part of A is not referenced.  If DIAG = 'U', the
		     diagonal elements of A are also not referenced and are
		     assumed to be 1.

		     On exit, the (triangular) inverse of the original matrix, in
		     the same storage format.

	   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 = -k, the k-th argument had an illegal value

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Definition at line 111 of file ztrti2.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.1							  Sun May 26 2013						       ztrti2.f(3)

Check Out this Related Man Page

ZTRTI2(l)								 )								 ZTRTI2(l)

NAME

       ZTRTI2 - compute the inverse of a complex upper or lower triangular matrix

SYNOPSIS

       SUBROUTINE ZTRTI2( UPLO, DIAG, N, A, LDA, INFO )

	   CHARACTER	  DIAG, UPLO

	   INTEGER	  INFO, LDA, N

	   COMPLEX*16	  A( LDA, * )

PURPOSE

       ZTRTI2 computes the inverse of a complex upper or lower triangular matrix.  This is the Level 2 BLAS version of the algorithm.

ARGUMENTS

       UPLO    (input) CHARACTER*1
	       Specifies whether the matrix A is upper or lower triangular.  = 'U':  Upper triangular
	       = 'L':  Lower triangular

       DIAG    (input) CHARACTER*1
	       Specifies whether or not the matrix A is unit triangular.  = 'N':  Non-unit triangular
	       = 'U':  Unit triangular

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

       A       (input/output) COMPLEX*16 array, dimension (LDA,N)
	       On  entry, the triangular matrix A.  If UPLO = 'U', the leading n by n upper triangular part of the array A contains the upper tri-
	       angular matrix, and the strictly lower triangular part of A is not referenced.  If UPLO = 'L', the leading n by n lower	triangular
	       part of the array A contains the lower triangular matrix, and the strictly upper triangular part of A is not referenced.  If DIAG =
	       'U', the diagonal elements of A are also not referenced and are assumed to be 1.

	       On exit, the (triangular) inverse of the original matrix, in the same storage format.

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

       INFO    (output) INTEGER
	       = 0: successful exit
	       < 0: if INFO = -k, the k-th argument had an illegal value

LAPACK version 3.0						   15 June 2000 							 ZTRTI2(l)

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ztrti2.f(3) [debian man page]

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