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

NAME

       LAPACK-3  -  computes  one  dqd  (shift  equal  to zero) transform in ping-pong form, with
       protection against underflow and overflow

SYNOPSIS

       SUBROUTINE DLASQ6( I0, N0, Z, PP, DMIN, DMIN1, DMIN2, DN, DNM1, DNM2 )

           INTEGER        I0, N0, PP

           DOUBLE         PRECISION DMIN, DMIN1, DMIN2, DN, DNM1, DNM2

           DOUBLE         PRECISION Z( * )

PURPOSE

       DLASQ6 computes one dqd (shift equal to zero) transform in ping-pong form, with protection
       against underflow and overflow.

ARGUMENTS

        I0    (input) INTEGER
              First index.

        N0    (input) INTEGER
              Last index.

        Z     (input) DOUBLE PRECISION array, dimension ( 4*N )
              Z holds the qd array. EMIN is stored in Z(4*N0) to avoid
              an extra argument.

        PP    (input) INTEGER
              PP=0 for ping, PP=1 for pong.

        DMIN  (output) DOUBLE PRECISION
              Minimum value of d.
              DMIN1 (output) DOUBLE PRECISION
              Minimum value of d, excluding D( N0 ).
              DMIN2 (output) DOUBLE PRECISION
              Minimum value of d, excluding D( N0 ) and D( N0-1 ).

        DN    (output) DOUBLE PRECISION
              d(N0), the last value of d.

        DNM1  (output) DOUBLE PRECISION
              d(N0-1).

        DNM2  (output) DOUBLE PRECISION
              d(N0-2).

 LAPACK routine (version 3.2)               April 2011                            DLASQ6(3lapack)