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! Copyright (C) 2014 J. K. Dewhurst, S. Sharma and E. K. U. Gross.
! This file is distributed under the terms of the GNU General Public License.
! See the file COPYING for license details.
pure subroutine mixlinear(iscl,beta,n,nu,mu,d)
implicit none
! arguments
integer, intent(in) :: iscl
real(8), intent(in) :: beta
integer, intent(in) :: n
real(8), intent(inout) :: nu(n),mu(n)
real(8), intent(out) :: d
! local variables
integer i
real(8) t0,t1
if (n < 1) return
! initialise mixer
if (iscl < 1) then
mu(1:n)=nu(1:n)
d=1.d0
return
end if
t0=1.d0-beta
d=0.d0
do i=1,n
t1=nu(i)-mu(i)
d=d+t1**2
nu(i)=beta*nu(i)+t0*mu(i)
mu(i)=nu(i)
end do
d=sqrt(d/dble(n))
end subroutine
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