constrain()

[Math]

Description

Constrains a number to be within a range.

Syntax

constrain(x, a, b)

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

sensVal = constrain(sensVal, 10, 150);
// limits range of sensor values to between 10 and 150 

See also

• [Language] min()
• [Language] max()

Language Reference Home

The text of the 86Duino reference is a modification of the Arduino reference and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.