debian man page for ctrtri

ctrtri.f(3)							      LAPACK							       ctrtri.f(3)

NAME
       ctrtri.f -

SYNOPSIS
   Functions/Subroutines
       subroutine ctrtri (UPLO, DIAG, N, A, LDA, INFO)
	   CTRTRI

Function/Subroutine Documentation
   subroutine ctrtri (characterUPLO, characterDIAG, integerN, complex, dimension( lda, * )A, integerLDA, integerINFO)
       CTRTRI

       Purpose:

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

	    This is the Level 3 BLAS version of the algorithm.

       Parameters:
	   UPLO

		     UPLO is CHARACTER*1
		     = 'U':  A is upper triangular;
		     = 'L':  A is lower triangular.

	   DIAG

		     DIAG is CHARACTER*1
		     = 'N':  A is non-unit triangular;
		     = 'U':  A is unit triangular.

	   N

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

	   A

		     A is COMPLEX 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 = -i, the i-th argument had an illegal value
		     > 0: if INFO = i, A(i,i) is exactly zero.	The triangular
			  matrix is singular and its inverse can not be computed.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Definition at line 110 of file ctrtri.f.

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

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