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# get_delta(?Var, -Width)

Returns the width of the interval of Var.

Var
  A domain variable or an integer
Width
  Width of the interval

## Description

Returns the width (Hi - Lo) of the interval of Var. If Var is an integer, 0 will be returned as the width. If Var is free, then 1.0Inf is returned as the width, but Var is not turned into a domain variable.

### Modes and Determinism

- get_delta(?, -) is det

## See Also

get_median / 2, get_bounds / 3