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LEARN ABOUT DEBIAN

slasq4

slasq4.f(3)							      LAPACK							       slasq4.f(3)

NAME

       slasq4.f -

SYNOPSIS

   Functions/Subroutines
       subroutine slasq4 (I0, N0, Z, PP, N0IN, DMIN, DMIN1, DMIN2, DN, DN1, DN2, TAU, TTYPE, G)
	   SLASQ4

Function/Subroutine Documentation
   subroutine slasq4 (integerI0, integerN0, real, dimension( * )Z, integerPP, integerN0IN, realDMIN, realDMIN1, realDMIN2, realDN, realDN1,
       realDN2, realTAU, integerTTYPE, realG)
       SLASQ4

       Purpose:

	    SLASQ4 computes an approximation TAU to the smallest eigenvalue
	    using values of d from the previous transform.

       Parameters:
	   I0

		     I0 is INTEGER
		   First index.

	   N0

		     N0 is INTEGER
		   Last index.

	   Z

		     Z is REAL array, dimension ( 4*N )
		   Z holds the qd array.

	   PP

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

	   N0IN

		     N0IN is INTEGER
		   The value of N0 at start of EIGTEST.

	   DMIN

		     DMIN is REAL
		   Minimum value of d.

	   DMIN1

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

	   DMIN2

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

	   DN

		     DN is REAL
		   d(N)

	   DN1

		     DN1 is REAL
		   d(N-1)

	   DN2

		     DN2 is REAL
		   d(N-2)

	   TAU

		     TAU is REAL
		   This is the shift.

	   TTYPE

		     TTYPE is INTEGER
		   Shift type.

	   G

		     G is REAL
		   G is passed as an argument in order to save its value between
		   calls to SLASQ4.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Further Details:

	     CNST1 = 9/16

       Definition at line 151 of file slasq4.f.

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

Version 3.4.1							  Sun May 26 2013						       slasq4.f(3)