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# get_delta(?Var, -Width)

Returns the width of the interval of Var.

Var
  A variable or a number
Width
  Width of the interval

## Description

Returns the width (Hi - Lo) of the interval of Var. If Var has not been declared before, it will be turned into an unrestricted real variable. If Var is a ground number, the width will be calculated appropriately based on its type.

### Modes and Determinism

- get_delta(?, -) is det

## See Also

get_median / 2, get_bounds / 3