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csymv.f(3)				      LAPACK				       csymv.f(3)

NAME
       csymv.f -

SYNOPSIS
   Functions/Subroutines
       subroutine csymv (UPLO, N, ALPHA, A, LDA, X, INCX, BETA, Y, INCY)
	   CSYMV computes a matrix-vector product for a complex symmetric matrix.

Function/Subroutine Documentation
   subroutine csymv (characterUPLO, integerN, complexALPHA, complex, dimension( lda, * )A,
       integerLDA, complex, dimension( * )X, integerINCX, complexBETA, complex, dimension( * )Y,
       integerINCY)
       CSYMV computes a matrix-vector product for a complex symmetric matrix.

       Purpose:

	    CSYMV  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.

       Parameters:
	   UPLO

		     UPLO is 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

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

	   ALPHA

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

	   A

		     A is COMPLEX 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

		     LDA is 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

		     X is 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

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

	   BETA

		     BETA is 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

		     Y is 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

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

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 158 of file csymv.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2				 Tue Sep 25 2012			       csymv.f(3)
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