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.

範例程式碼

sensVal = max(senVal, 20); 
// assigns sensVal to the larger of sensVal or 20
// (effectively ensuring that it is at least 20)

注意

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 知識共享署名-相同方式分享 3.0 許可證，部分文本是從 Arduino 參考 修改的。 參考中的代碼示例已發佈到公共領域。