root/OptimizingMATLABCode/blockAvgEx/bsxfunEx.m @ 11
| 10 | anderm8 | function bsxfunEx
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%% This example shows the use of bsxfun
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% C = bsxfun(fun,A,B) applies an element-by-element binary operation to
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% arrays A and B, with singleton expansion enabled. fun is a function
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% handle, and can either be a MATLAB file function or one of a selected number
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% of built in functions
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% Copyright 2015 The MathWorks, Inc.
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A = magic(4000);
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t1 = 0;
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t2 = 0;
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for ii = 1:10
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tic
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Anew1 = A - repmat(mean(A),length(A),1);
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t1 = t1+toc;
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tic
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Anew2 = bsxfun(@minus, A, mean(A));
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t2 = t2+toc;
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end
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fprintf(1,'t1: %fs\nt2: %fs\n',t1,t2);
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% Verify that they're equal
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assert(isequal(Anew1,Anew2),'Anew1 is not equal to Anew2')
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% Copyright 2015 The MathWorks, Inc.
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