Alert rule expression for inside range and outside range

[EnthuDeveloper]

Hello,
We have to support 2 simple use cases wherein user can say raise an alert if the metric value at runtime is within range or outside the range. For that , they would provide us the lower limit and upper limit values.

So instead of coding the expression to be,
Metric >= low && metric <= high

Wondering , if prometheus offers a standard range function to cover both in range and outside range use cases?

Thanks.