www.pudn.com > matlab.rar > calcbits.m, change:1996-02-06,size:1382b

function [bits]=calcbits(bounds,precision) % function [bits]=calcbits(bounds,precision) % % Determine the number of bits to represent a float number to the precision % provided. % % bits - the number of bits required per variable % bounds - the bounds on the variables % precision - the least difference to distinguish two numbers % Binary and Real-Valued Simulation Evolution for Matlab % Copyright (C) 1996 C.R. Houck, J.A. Joines, M.G. Kay % % C.R. Houck, J.Joines, and M.Kay. A genetic algorithm for function % optimization: A Matlab implementation. ACM Transactions on Mathmatical % Software, Submitted 1996. % % This program is free software; you can redistribute it and/or modify % it under the terms of the GNU General Public License as published by % the Free Software Foundation; either version 1, or (at your option) % any later version. % % This program is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the % GNU General Public License for more details. A copy of the GNU % General Public License can be obtained from the % Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. bits=ceil(log2((bounds(:,2)-bounds(:,1))' ./ precision)); % bits=ceil(log( (bounds(:,2)-bounds(:,1))' .* 10.^precision+1) ./ log(2));