cgtsv man page on Scientific

 Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   26626 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript
[printable version]

```CGTSV(1)		 LAPACK routine (version 3.2)		      CGTSV(1)

NAME
CGTSV - solves the equation   A*X = B,

SYNOPSIS
SUBROUTINE CGTSV( N, NRHS, DL, D, DU, B, LDB, INFO )

INTEGER	 INFO, LDB, N, NRHS

COMPLEX	 B( LDB, * ), D( * ), DL( * ), DU( * )

PURPOSE
CGTSV   solves the equation where A is an N-by-N tridiagonal matrix, by
Gaussian elimination with partial pivoting.
Note that the equation  A'*X = B	 may be solved	by  interchanging  the
order of the arguments DU and DL.

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

NRHS    (input) INTEGER
The  number of right hand sides, i.e., the number of columns of
the matrix B.  NRHS >= 0.

DL      (input/output) COMPLEX array, dimension (N-1)
On entry, DL must contain the (n-1) subdiagonal elements of  A.
On  exit, DL is overwritten by the (n-2) elements of the second
superdiagonal of the upper triangular matrix U from the LU fac‐
torization of A, in DL(1), ..., DL(n-2).

D       (input/output) COMPLEX array, dimension (N)
On  entry, D must contain the diagonal elements of A.  On exit,
D is overwritten by the n diagonal elements of U.

DU      (input/output) COMPLEX array, dimension (N-1)
On entry, DU must contain the (n-1) superdiagonal  elements  of
A.   On	exit,  DU  is overwritten by the (n-1) elements of the
first superdiagonal of U.

B       (input/output) COMPLEX array, dimension (LDB,NRHS)
On entry, the N-by-NRHS right hand side matrix B.  On exit,  if
INFO = 0, the N-by-NRHS solution matrix X.

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

INFO    (output) INTEGER
= 0:  successful exit
< 0:  if INFO = -i, the i-th argument had an illegal value
> 0:  if INFO = i, U(i,i) is exactly zero, and the solution has
not been computed.  The factorization has  not  been  completed
unless i = N.

LAPACK routine (version 3.2)	 November 2008			      CGTSV(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.