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    %% Read Entire File of Double-Precision Data  

% Copyright 2015 The MathWorks, Inc.


%% 
% Create a file named |doubledata.bin|, containing nine double-precision
% values. 
fileID = fopen('doubledata.bin','w');
fwrite(fileID,magic(3),'double');
fclose(fileID);  

%% 
% Open the file, |doubledata.bin|, and read the data in the file into a
% 3-by-3 array, |A|. Specify that the source data is class |double|. 
fileID = fopen('doubledata.bin');
A = fread(fileID,[3 3],'double')  

%% 
% Close the file. 
fclose(fileID);