cspr man page on YellowDog

Man page or keyword search:  
man Server   18644 pages
apropos Keyword Search (all sections)
Output format
YellowDog logo
[printable version]

CSPR(l)				       )			       CSPR(l)

NAME
       CSPR - perform the symmetric rank 1 operation  A := alpha*x*conjg( x' )
       + A,

SYNOPSIS
       SUBROUTINE CSPR( UPLO, N, ALPHA, X, INCX, AP )

	   CHARACTER	UPLO

	   INTEGER	INCX, N

	   COMPLEX	ALPHA

	   COMPLEX	AP( * ), X( * )

PURPOSE
       CSPR performs the symmetric rank 1 operation A := alpha*x*conjg( x' ) +
       A,  where  alpha is a complex scalar, x is an n element vector and A is
       an n by n symmetric matrix, supplied in packed form.

ARGUMENTS
       UPLO   - CHARACTER*1
	      On entry, UPLO specifies whether the upper or  lower  triangular
	      part  of the matrix A is supplied in the packed array AP as fol‐
	      lows:

	      UPLO = 'U' or 'u'	  The upper triangular part of A  is  supplied
	      in AP.

	      UPLO  =  'L' or 'l'   The lower triangular part of A is supplied
	      in AP.

	      Unchanged on exit.

       N      - INTEGER
	      On entry, N specifies the order of the matrix A.	N must	be  at
	      least zero.  Unchanged on exit.

       ALPHA  - COMPLEX
	      On entry, ALPHA specifies the scalar alpha.  Unchanged on exit.

       X      - COMPLEX array, dimension at least
	      (	 1  +  ( N - 1 )*abs( INCX ) ).	 Before entry, the incremented
	      array X must contain the N-  element  vector  x.	 Unchanged  on
	      exit.

       INCX   - INTEGER
	      On  entry,  INCX	specifies the increment for the elements of X.
	      INCX must not be zero.  Unchanged on exit.

       AP     - COMPLEX array, dimension at least
	      ( ( N*( N + 1 ) )/2 ).  Before entry, with  UPLO = 'U'  or  'u',
	      the  array AP must contain the upper triangular part of the sym‐
	      metric matrix packed sequentially, column by column, so that AP(
	      1	 )  contains  a( 1, 1 ), AP( 2 ) and AP( 3 ) contain a( 1, 2 )
	      and a( 2, 2 ) respectively, and so on. On exit, the array AP  is
	      overwritten  by the upper triangular part of the updated matrix.
	      Before entry, with UPLO = 'L' or 'l', the array AP must  contain
	      the lower triangular part of the symmetric matrix packed sequen‐
	      tially, column by column, so that AP( 1 ) contains a(  1,	 1  ),
	      AP(  2  )	 and  AP(  3 ) contain a( 2, 1 ) and a( 3, 1 ) respec‐
	      tively, and so on. On exit, the array AP is overwritten  by  the
	      lower  triangular	 part  of  the	updated matrix.	 Note that the
	      imaginary parts of the diagonal elements need not be  set,  they
	      are assumed to be zero, and on exit they are set to zero.

LAPACK version 3.0		 15 June 2000			       CSPR(l)
[top]

List of man pages available for YellowDog

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