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.. _arduino-constrain:
constrain(x, a, b)
==================
Description
-----------
Constrains a number to be within a range.
Parameters
----------
x: the number to constrain, all data types
a: the lower end of the range, all data types
b: the upper end of the range, all data types
Returns
-------
**x**: if **x** is between **a** and **b**
**a**: if **x** is less than **a**
**b**: if **x** is greater than **b**
Example
-------
::
sensVal = constrain(sensVal, 10, 150);
// limits range of sensor values to between 10 and 150
See also
--------
- `min <http://arduino.cc/en/Reference/Min>`_\ ()
- `max <http://arduino.cc/en/Reference/Max>`_\ ()
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