isequaln
isequaln(A1,A2,...,An) returns 1 (true) if matrices A1,A2,...,An are equal and 0 (false) otherwise. NaN values are treated as equal to themselves (as opposed to isequal function).
Examples
> isequaln(1,1) [ans:true]
> isequaln(1,1,2) [ans:false]
> isequaln(NaN,NaN) [ans:true]