evalboolff.m

来自「this is for demo in matlab」· M 代码 · 共 43 行

function costFun = evalBoolFF( B, varargin )
% evalBoolFF - evaluation of different combinations for activation
%              functions for J-K or R-S flip-flops
%
% Use: evalBoolFF (file_name, cost3)  to initialize the function, where
% file_name is a name of a function, that sets the corresponging bits of
% the activation functions (see examples) and cost3 is 1 or -1, depending
% whether the non-inverted or the inverted bits are to be penalized
%
% Use: cost = evalBoolFF ( B )  to evaluate particular bit combination
% 
% evalBoolFF ver.1                                  Last update 24 Feb 2007

% Copyright 2002-2007       Andrey Popov          [e-mail]

persistent fill_name cost3

if nargin == 2
    fill_name = B;
    cost3 = varargin{1};
    return
end

% call the neccessary function to fill the J, K, R or S vector
FF = feval(fill_name, B);

G = find(FF) - 1;

% Perform boolean minimization
R = minBool(G, 2);

R = R(2:end,:);     % remove the heading row
n = size(R,1);

costFun(1) = n;                 % number of desjunctions
costFun(2) = sum(sum(R~=0));    % number of involved signals

if cost3 == 1
    costFun(3) = sum(sum(R==1));    % number of non-inverted signals
else
    costFun(3) = sum(sum(R==-1));   % number of inverted signals
end