cpttrf 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]

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

NAME
CPTTRF - computes the L*D*L' factorization of a complex Hermitian posi‐
tive definite tridiagonal matrix A

SYNOPSIS
SUBROUTINE CPTTRF( N, D, E, INFO )

INTEGER	  INFO, N

REAL		  D( * )

COMPLEX	  E( * )

PURPOSE
CPTTRF computes the L*D*L' factorization of a complex  Hermitian	 posi‐
tive  definite  tridiagonal  matrix  A.	 The factorization may also be
regarded as having the form A = U'*D*U.

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

D       (input/output) REAL array, dimension (N)
On entry, the n diagonal elements of the tridiagonal matrix  A.
On  exit, the n diagonal elements of the diagonal matrix D from
the L*D*L' factorization of A.

E       (input/output) COMPLEX array, dimension (N-1)
On entry, the (n-1) subdiagonal	elements  of  the  tridiagonal
matrix  A.  On exit, the (n-1) subdiagonal elements of the unit
bidiagonal factor L from the L*D*L' factorization of A.	E  can
also  be	 regarded  as the superdiagonal of the unit bidiagonal
factor U from the U'*D*U factorization of A.

INFO    (output) INTEGER
= 0: successful exit
< 0: if INFO = -k, the k-th argument had an illegal value
> 0: if INFO = k, the leading minor of order k is not  positive
definite;  if  k < N, the factorization could not be completed,
while if k = N, the factorization was completed, but D(N) <= 0.

LAPACK routine (version 3.2)	 November 2008			     CPTTRF(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.