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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
max(a, 0);
a--; //use this instead - keep other math outside the function
See also
Corrections, suggestions, and new documentation should be posted to the Forum.
The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.
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