csyr man page on IRIX

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CSYR(3F)							      CSYR(3F)

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

SYNOPSIS
     SUBROUTINE CSYR( UPLO, N, ALPHA, X, INCX, A, LDA )

	 CHARACTER    UPLO

	 INTEGER      INCX, LDA, N

	 COMPLEX      ALPHA

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

PURPOSE
     CSYR   performs the symmetric rank 1 operation

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

     A	    - 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

									Page 1

CSYR(3F)							      CSYR(3F)

	    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    - 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.

									Page 2

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