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csyr.f(3)				      LAPACK					csyr.f(3)

NAME
       csyr.f -

SYNOPSIS
   Functions/Subroutines
       subroutine csyr (UPLO, N, ALPHA, X, INCX, A, LDA)
	   CSYR performs the symmetric rank-1 update of a complex symmetric matrix.

Function/Subroutine Documentation
   subroutine csyr (characterUPLO, integerN, complexALPHA, complex, dimension( * )X, integerINCX,
       complex, dimension( lda, * )A, integerLDA)
       CSYR performs the symmetric rank-1 update of a complex symmetric matrix.

       Purpose:

	    CSYR   performs the symmetric rank 1 operation

	       A := alpha*x*x**H + A,

	    where alpha is a complex scalar, x is an n element vector 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.

	   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.

	   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. On exit, the
		      upper triangular part of the array A is overwritten by the
		      upper triangular part of the updated matrix.
		      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. On exit, the
		      lower triangular part of the array A is overwritten by the
		      lower triangular part of the updated matrix.

	   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.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 136 of file csyr.f.

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

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