function [C] = C_machines(p_n,M,s)
% C_MACHINES - coefficient of loss for machines
%   
% Input: 
%   p_n: is the steady-state probabity we are in the state X(t)=n
%   M: the number of machines
%   s: the number of servers
% 
% References: 
% 
% Introduction to Probability Models: Chapter 10
% by Roe Goodman 
% 
% Written by:
% -- 
% John L. Weatherwax                2007-09-10
% 
% email: wax@alum.mit.edu
% 
% Please send comments and especially bug reports to the
% above email address.
% 
%-----

nArray   = (s+1):M;
nmsArray = nArray-s;
C = dot( nmsArray, p_n((s+1+1):(M+1)) )/M;