Is there a faster way to implement a FIFO (queue) ?

19 views (last 30 days)
Gurudatha Pai
Gurudatha Pai on 9 Nov 2012
Hi, I was wondering if somebody could comment on my use of array indexing. I have a recursive function which uses some initial conditions passed in. I use it in the following manner.
ic = [x_i ic(1:end-1)];
ic is a long vector. x_i is a double.
This line seems to be taking a lot of execution time, about 50% of the total time Matlab spends in this function (using Profiler). The rest of the code is set of vectorized computations; I believe they are as fast as they can be.
I made one small adjustment and it made it a bit faster.
ic(2:end) = ic(1:end-1);
ic(1) = x_i;
This improved the execution time and these two lines take 40% of the total execution time of the function.
Could anybody suggest any better way of implementing this FIFO array.
Thanks for your time and comments.

Answers (0)

Products

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!