## Name:

mid
gives the middle of an interval.

## Library name:

sollya_obj_t sollya_lib_mid(sollya_obj_t)
## Usage:

mid(I) : range -> constant
mid(x) : constant -> constant
## Parameters:

- I is an interval.
- x is a real number.

## Description:

- Returns the middle of the interval I. If the middle is not exactly
representable at the current precision, the value is returned as an
unevaluated expression.
- When called on a real number x, mid behaves like the identity.

## Example 1:

> mid([1;3]);

2

> mid(17);

17

Go back to the list of commands