Do the calculation with 100 Digits and higher

How to do the calculation with 100 digits and higher. format LONGENG and format LONG G do not the work. Thank you

Answer 1

[James Tursa]

Native IEEE double calculations in MATLAB are limited to about 15 decimal digits. For more than that, you can use vpa with the Symbolic Toolbox:

http://www.mathworks.com/help/symbolic/vpa.html?searchHighlight=vpa

Or hpf by John D'Errico in the FEX:

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

Why do you need 100 digits or more?