MATLAB precision

Question

How can I implement quadruple precision (128 bit arithmetic) in MATLAB while solving a Matrix eigenvalue problem ?

I am trying to solve a linear stability analysis p

Answer 1

Multiprecision Computing Toolbox for MATLAB has fast quadruple precision mode.

In particular, it is able to compute eigenvalues & vectors of 100 x 100 matrix by x70-x100 times faster than Symbolic Math Toolbox (using same quadruple precision).

See Fast Quadruple Precision Computations in MATLAB page for comparisons and details.

Besides suggested alternatives - Symbolic Math Toolbox and Ben Barrowes's library both have significant limitations, see my answer here.