How to check for equality between 2 octave_value objects?

[Michael Goffioul]

Is there a function in the current API that allows to check
that 2 octave_value objects are equals. The only assumption
I can make is that both objects are numeric (isnumeric returns
true), but can be of any size and any element-type. I don't mean
an element-by-element equality, just a global equality: same
element-type, same dims, same elements.

Michael.