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drotm.f(3)				      LAPACK				       drotm.f(3)

NAME
       drotm.f -

SYNOPSIS
   Functions/Subroutines
       subroutine drotm (N, DX, INCX, DY, INCY, DPARAM)
	   DROTM

Function/Subroutine Documentation
   subroutine drotm (integerN, double precision, dimension(*)DX, integerINCX, double precision,
       dimension(*)DY, integerINCY, double precision, dimension(5)DPARAM)
       DROTM Purpose:

	       APPLY THE MODIFIED GIVENS TRANSFORMATION, H, TO THE 2 BY N MATRIX

	       (DX**T) , WHERE **T INDICATES TRANSPOSE. THE ELEMENTS OF DX ARE IN
	       (DY**T)

	       DX(LX+I*INCX), I = 0 TO N-1, WHERE LX = 1 IF INCX .GE. 0, ELSE
	       LX = (-INCX)*N, AND SIMILARLY FOR SY USING LY AND INCY.
	       WITH DPARAM(1)=DFLAG, H HAS ONE OF THE FOLLOWING FORMS..

	       DFLAG=-1.D0     DFLAG=0.D0	 DFLAG=1.D0	DFLAG=-2.D0

		 (DH11	DH12)	 (1.D0	DH12)	 (DH11	1.D0)	 (1.D0	0.D0)
	       H=(	    )	 (	    )	 (	    )	 (	    )
		 (DH21	DH22),	 (DH21	1.D0),	 (-1.D0 DH22),	 (0.D0	1.D0).
	       SEE DROTMG FOR A DESCRIPTION OF DATA STORAGE IN DPARAM.

       Parameters:
	   N

		     N is INTEGER
		    number of elements in input vector(s)

	   DX

		     DX is DOUBLE PRECISION array, dimension N
		    double precision vector with N elements

	   INCX

		     INCX is INTEGER
		    storage spacing between elements of DX

	   DY

		     DY is DOUBLE PRECISION array, dimension N
		    double precision vector with N elements

	   INCY

		     INCY is INTEGER
		    storage spacing between elements of DY

	   DPARAM

		     DPARAM is DOUBLE PRECISION array, dimension 5
		DPARAM(1)=DFLAG
		DPARAM(2)=DH11
		DPARAM(3)=DH21
		DPARAM(4)=DH12
		DPARAM(5)=DH22

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Definition at line 99 of file drotm.f.

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

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