How can I improve this benchmark

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Roberto Carabajal 2012-6-29

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https://ww2.mathworks.cn/matlabcentral/answers/42378-how-can-i-improve-this-benchmark

Hello: I'm trying to show the speed of Matlab to a fellow fan Fortran, and used the classic problem of compare mirror squared numbers (take a number a, obtain its mirror b, obtain their square a^2 , b^2 , obtain mirror of these last numbers and see it they are equal). Execution times are about 7 seconds for numbers to 11 to 1.000.000 using Matlab R2011a and Pentium 4. This is the code (in 3 m files):

clear; tic mx=1000000; q = 0; format bank ; for c = 10:mx [qda] = quantity (c) ; [b]= mirror (c , qda) ; bb=b^2; cc=c^2; [qda] = quantity (cc) ; [qdb] = quantity (bb) ; if (qda==qdb) [v] = mirror (bb , qdb) ; if(cc==v) % fprintf ('%d %d %d %d \n',c, b, c^2, b^2) ; q=q + 1; else end else end end toc fprintf('Numbers %d ', q) ;

function [qd] = quantity (number) qd = 0; n=number; while (n ~= 0) qd = qd +1; n = fix (n/ 10) ; end end

function [nm] = mirror (number , qd) a=number; n=number; nm=0; for c = 1:qd n=fix (a/10^(qd-c)); a=a-(n*10^(qd-c)) ; nm= nm+ n*(10^(c-1)) ; end end

I tried to improve this code but I'm not skilled enough. Is there any way?. Is there another code ? Please, I would appreciate any help. Rob