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dlasq6.f(3)				      LAPACK				      dlasq6.f(3)

NAME
       dlasq6.f -

SYNOPSIS
   Functions/Subroutines
       subroutine dlasq6 (I0, N0, Z, PP, DMIN, DMIN1, DMIN2, DN, DNM1, DNM2)
	   DLASQ6 computes one dqd transform in ping-pong form. Used by sbdsqr and sstegr.

Function/Subroutine Documentation
   subroutine dlasq6 (integerI0, integerN0, double precision, dimension( * )Z, integerPP, double
       precisionDMIN, double precisionDMIN1, double precisionDMIN2, double precisionDN, double
       precisionDNM1, double precisionDNM2)
       DLASQ6 computes one dqd transform in ping-pong form. Used by sbdsqr and sstegr.

       Purpose:

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

       Parameters:
	   I0

		     I0 is INTEGER
		   First index.

	   N0

		     N0 is INTEGER
		   Last index.

	   Z

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

	   PP

		     PP is INTEGER
		   PP=0 for ping, PP=1 for pong.

	   DMIN

		     DMIN is DOUBLE PRECISION
		   Minimum value of d.

	   DMIN1

		     DMIN1 is DOUBLE PRECISION
		   Minimum value of d, excluding D( N0 ).

	   DMIN2

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

	   DN

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

	   DNM1

		     DNM1 is DOUBLE PRECISION
		   d(N0-1).

	   DNM2

		     DNM2 is DOUBLE PRECISION
		   d(N0-2).

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 119 of file dlasq6.f.

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

Version 3.4.2				 Tue Sep 25 2012			      dlasq6.f(3)
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