Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages

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

ZSYMV(l)					)					 ZSYMV(l)

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

SYNOPSIS
       SUBROUTINE ZSYMV( UPLO, N, ALPHA, A, LDA, X, INCX, BETA, Y, INCY )

	   CHARACTER	 UPLO

	   INTEGER	 INCX, INCY, LDA, N

	   COMPLEX*16	 ALPHA, BETA

	   COMPLEX*16	 A( LDA, * ), X( * ), Y( * )

PURPOSE
       ZSYMV  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.

ARGUMENTS
       UPLO   - CHARACTER*1
	      On entry, UPLO specifies whether the upper or lower triangular part of the array	A
	      is to be referenced as follows:

	      UPLO = 'U' or 'u'   Only the upper triangular part of A is to be referenced.

	      UPLO = 'L' or 'l'   Only the lower triangular part of A is to be referenced.

	      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*16
	      On entry, ALPHA specifies the scalar alpha.  Unchanged on exit.

       A      - COMPLEX*16 array, dimension ( LDA, N )
	      Before entry, with  UPLO = 'U' or 'u', the leading n by n upper triangular part  of
	      the  array A must contain the upper triangular part of the symmetric matrix and the
	      strictly lower triangular part of A is not referenced.  Before entry, with  UPLO	=
	      'L'  or  'l',  the leading n by n lower triangular part of the array A must contain
	      the lower triangular part of the symmetric matrix and the strictly upper triangular
	      part of A is not referenced.  Unchanged on exit.

       LDA    - INTEGER
	      On  entry,  LDA specifies the first dimension of A as declared in the calling (sub)
	      program. LDA must be at least max( 1, N ).  Unchanged on exit.

       X      - COMPLEX*16 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*16
	      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*16 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 				 ZSYMV(l)


All times are GMT -4. The time now is 01:37 AM.

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