How to assign values to variables and calculate equation?

In GUI table, I enter an equations (like '((VDD-VSS)*(Id_M5+(2*(Id_M7))))/(CL*Cc)*Vth_M5^2*Cc').

I split this equations using,

output = regexp(S, '[ ()^*+/-]+', 'split');
output(cellfun(@isempty, output)) = []

I get,

output =  'VDD'    'VSS'    'Id_M5'    '2' 'Id_M7'    'CL'    'Cc'    'Vth_M5' '2'    'Cc'

and I have its corresponding values,

ComVal = 1.800000000000000  -1.800000000000000 0.000011200000000   2.000000000000000 0.000010400000000   0.000000000002000 0.000000000010117   0.367000000000000 2.000000000000000   0.000000000010117

class of ComVal is double.

Now, how do I calculate the value of the equation entered?

Thank You.

[Walter Roberson]

If you have the symbolic toolbox then use str2sym and subs()

[Harsha M V]

No Sir, I dont have str2sym. I'm using 2013a

[Walter Roberson]

https://www.mathworks.com/matlabcentral/fileexchange/18872-toy-compiler

http://www.ee.columbia.edu/~johnny/projects/miniMATLAB/

https://www.cs.dartmouth.edu/~mckeeman/cs48/mxcom/doc/Topdown.html

[Harsha M V]

Thank You Sir.