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Determine inequality

- example
`A ~= B`

`ne(A,B)`

returns
a logical array with elements set to logical `A`

~= `B`

`1`

(`true`

)
where arrays `A`

and `B`

are not
equal; otherwise, the element is logical `0`

(`false`

).
The test compares both real and imaginary parts of numeric arrays. `ne`

returns
logical `1`

(`true`

) where `A`

or `B`

have
NaN or undefined categorical elements.

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