- `TF = isequal (X1, X2, ...)`

Return true if all inputs are equal.

Inputs are considered equal when they have the same size and corresponding
values are equal.

See also: `eq`, `isequaln`.

### References

- https://www.mathworks.com/help/matlab/ref/isequal.html
- https://octave.sourceforge.io/octave/function/isequal.html