👤
Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:
Select Section of Man Page:
Select Man Page Repository:

RedHat 9 (Linux i386) - man page for cspmv (redhat section l)

CSPMV(l)					)					 CSPMV(l)

NAME
       CSPMV - perform the matrix-vector operation  y := alpha*A*x + beta*y,

SYNOPSIS
       SUBROUTINE CSPMV( UPLO, N, ALPHA, AP, X, INCX, BETA, Y, INCY )

	   CHARACTER	 UPLO

	   INTEGER	 INCX, INCY, N

	   COMPLEX	 ALPHA, BETA

	   COMPLEX	 AP( * ), X( * ), Y( * )

PURPOSE
       CSPMV  performs	the matrix-vector operation y := alpha*A*x + beta*y, where alpha and beta
       are scalars, x and y are n element vectors 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 follows:

	      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.

       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 symmetric matrix packed sequentially, col-
	      umn  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.  Before entry, with  UPLO  =  'L'  or
	      'l',  the  array	AP must contain the lower triangular part of the symmetric matrix
	      packed sequentially, column by column, so that AP( 1 ) contains a( 1, 1 ), AP( 2	)
	      and  AP( 3 ) contain a( 2, 1 ) and a( 3, 1 ) respectively, and so on.  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.

       BETA   - COMPLEX
	      On entry, BETA specifies the scalar beta. When BETA is supplied as zero then Y need
	      not be set on input.  Unchanged on exit.

       Y      - COMPLEX array, dimension at least
	      (  1 + ( N - 1 )*abs( INCY ) ).  Before entry, the incremented array Y must contain
	      the n element vector y. On exit, Y is overwritten by the updated vector y.

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

LAPACK version 3.0			   15 June 2000 				 CSPMV(l)


All times are GMT -4. The time now is 06:06 PM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
×
UNIX.COM Login
Username:
Password:  
Show Password