cgeru man page on YellowDog

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CGERU(l)			 BLAS routine			      CGERU(l)

NAME
       CGERU - perform the rank 1 operation   A := alpha*x*y' + A,

SYNOPSIS
       SUBROUTINE CGERU ( M, N, ALPHA, X, INCX, Y, INCY, A, LDA )

	   COMPLEX	ALPHA

	   INTEGER	INCX, INCY, LDA, M, N

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

PURPOSE
       CGERU  performs the rank 1 operation

       where  alpha  is	 a scalar, x is an m element vector, y is an n element
       vector and A is an m by n matrix.

PARAMETERS
       M      - INTEGER.
	      On entry, M specifies the number of rows of  the	matrix	A.   M
	      must be at least zero.  Unchanged on exit.

       N      - INTEGER.
	      On  entry, N specifies the number of columns 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 of dimension at least
	      ( 1 + ( m - 1 )*abs( INCX ) ).  Before  entry,  the  incremented
	      array X must contain the m 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.

       Y      - COMPLEX		 array of dimension at least
	      ( 1 + ( n - 1 )*abs( INCY ) ).  Before  entry,  the  incremented
	      array Y must contain the n element vector y.  Unchanged on exit.

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

       A      - COMPLEX		 array of DIMENSION ( LDA, n ).
	      Before entry, the leading m by n part of the array A  must  con‐
	      tain  the	 matrix	 of coefficients. On exit, A is overwritten by
	      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, m ).
	      Unchanged on exit.

	      Level 2 Blas routine.

	      -- Written on 22-October-1986.  Jack Dongarra, Argonne  National
	      Lab.   Jeremy Du Croz, Nag Central Office.  Sven Hammarling, Nag
	      Central Office.  Richard Hanson, Sandia National Labs.

BLAS routine			16 October 1992			      CGERU(l)
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