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.. _arduino-max:
max(x, y)
=========
Description
-----------
Calculates the maximum of two numbers.
Parameters
----------
x: the first number, any data type
y: the second number, any data type
Returns
-------
The larger of the two parameter values.
Example
-------
::
sensVal = max(senVal, 20); // assigns sensVal to the larger of sensVal or 20
// (effectively ensuring that it is at least 20)
Note
----
Perhaps counter-intuitively, max() is often used to constrain the
lower end of a variable's range, while min() is used to constrain
the upper end of the range.
Warning
-------
Because of the way the max() function is implemented, avoid using
other functions inside the brackets, it may lead to incorrect
results
::
max(a--, 0); // avoid this - yields incorrect results
a--; // use this instead -
max(a, 0); // keep other math outside the function
See also
--------
- `min <http://arduino.cc/en/Reference/Min>`_\ ()
- `constrain <http://arduino.cc/en/Reference/Constrain>`_\ ()
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