_ROTM(3F)							     _ROTM(3F)

NAME    [Toc]    [Back]

     drotm, srotm - BLAS Level-1. Applies a modified Givens rotation.

FORTRAN	SYNOPSIS
     subroutine	drotm( n, x, incx, y, incy, param )
     integer		n, incx, incy
     double precision	x( (n-1)*|incx|+1 ), y(	(n-1)*|incy|+1 )
     double precision	param( 5 )

     subroutine	srotm( n, x, incx, y, incy, param )
     integer		n, incx, incy
     real		x( (n-1)*|incx|+1 ), y(	(n-1)*|incy|+1 )
     real		param( 5 )

DESCRIPTION    [Toc]    [Back]

     DROTM and SROTM apply the modified	Givens rotation	computed by drotmg or
     srotmg.

PARAMETERS    [Toc]    [Back]

     n	     (input)
	     Number of planar points to	be rotated. If n<=0, the routine
	     returns without any computattion.

     x	     (input/output)
	     On	input, x contains the x-coordinate of each planar point	to be
	     rotated.
	     On	output,	x contains the x-coordinate of each rotated planar
	     point.

     incx    (input)
	     Increment between elemnents of x.
	     If	incx=0,	the results will be unpredictable.

     y	     (input/output)
	     On	input, y contains the y-coordinate of each planer point	to be
	     rotated.
	     On	output,	y contains the y-coordinate of each rotated planar
	     point.

     incy    (input)
	     Increment between elemnents of y.
	     If	incy=0,	the results will be unpredictable.

     param   (output)
	     This array	contains rotation matrix information.








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_ROTM(3F)							     _ROTM(3F)



SEE ALSO
     DROTMG or SROTMG.


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