How to us variable as an if statement condition?

I want to use an if statement that its condition depends on a variable to give the following conditions (<= or >=). For example:

if condiotion

 a = '<=';

 else 

 a = '>=';

end

if 4 a 9 %I want to use variable a to give the condition, this will minimize the size of my code

 do something

end

I will appreciate your help Thanks.

[KSSV]

Question is not clear..

[Warith Sheibany]

I want to use a variable a that is assigned from previous if statement to choose either <= or >= for an if statement. for instance; if 3 a 7 should work as (if 3 <= 7 or 3 >= 7 )

I hope it is clear now?

Answer 1

[Guillaume]

if somecondition
   comparisonop = @le;  %le is the function name for <=
else
   comparisonop = @ge;  %ge is the function name for >=
end

if comparisonop(4,9)
   %do something
end