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+======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   ====
+<code arduino>sensVal = constrain(sensVal, 10, 150);
+// limits range of sensor values to between 10 and 150 </code>
+====See also   ====
+* [[arduino:math:Min]]
+* [[arduino:math:Max]]
+Source: arduino.cc

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