Provided by: liblapack-doc_3.3.1-1_all bug

NAME

       SLARFP - generates a real elementary reflector H of order n, such that   H * ( alpha ) = (
       beta ), H' * H = I

SYNOPSIS

       SUBROUTINE SLARFP( N, ALPHA, X, INCX, TAU )

           INTEGER        INCX, N

           REAL           ALPHA, TAU

           REAL           X( * )

PURPOSE

       SLARFP generates a real elementary reflector H of order n, such that
                 (   x   )   (   0  )
       where alpha and beta are scalars, beta is non-negative, and x  is  an  (n-1)-element  real
       vector.  H is represented in the form
             H = I - tau * ( 1 ) * ( 1 v' ) ,
                           ( v )
       where tau is a real scalar and v is a real (n-1)-element
       vector.
       If the elements of x are all zero, then tau = 0 and H is taken to be the unit matrix.
       Otherwise  1 <= tau <= 2.

ARGUMENTS

       N       (input) INTEGER
               The order of the elementary reflector.

       ALPHA   (input/output) REAL
               On entry, the value alpha.  On exit, it is overwritten with the value beta.

       X       (input/output) REAL array, dimension
               (1+(N-2)*abs(INCX))  On  entry, the vector x.  On exit, it is overwritten with the
               vector v.

       INCX    (input) INTEGER
               The increment between elements of X. INCX > 0.

       TAU     (output) REAL
               The value tau.

 LAPACK auxiliary routine (version 3.2)   November 2008                           SLARFP(3lapack)