can I increase the accuracy of my numbers by digits

I am working with very small numbers. can I use digits to increase the accuracy? for example can I put digits=300 to get better result?

[Walter Roberson]

duplicate is at http://www.mathworks.co.uk/matlabcentral/answers/50397-how-can-i-increase-accuracy

Answer 1

[the cyclist]

Not in base MATLAB, but here is a submission in the File Exchange, from a very reliable user, that sounds like it will do what you want:

http://www.mathworks.com/matlabcentral/fileexchange/36534-hpf-a-big-decimal-class