_ROTM(3F)_ROTM(3F)NAME
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
DROTM and SROTM apply the modified Givens rotation computed by drotmg or
srotmg.
PARAMETERS
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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