max()

[Math]

描述

Calculates the maximum of two numbers.

語法

max(x, y)

參數

X: the first number, any data type
y: the second number, any data type

回傳

The larger of the two parameter values.

Example Code

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

參考

• [程式語法] min()
• [程式語法] constrain()

語法參考主頁面

86Duino 參考的文本是根據 Creative Commons Attribution-ShareAlike 3.0 License，部分文本是從 the Arduino reference 修改的。 參考中的代碼示例已發佈到公共領域。