是否有“规范"的规定?结合了min()和max()的函数的名称? [英] Is there a "canonical" name for a function combining min() and max()?

问题描述

我发现我经常结束编写一个总是称为"clamp()"的函数，该函数是min()和max()的组合.此功能是否有标准的规范"名称?

I find that I frequently end up writing a function that I always call "clamp()", that is kind of a combination of min() and max(). Is there a standard, "canonical" name for this function?

它总是看起来像这样:

function clamp($val, $lower, $upper)
{
  if ($val < $lower)
    return $lower;
  else if ($val > $upper)
    return $upper;
  else
    return $val;
}

或仅使用内置的min()和max()函数:

Or simply using built-in min() and max() functions:

function clamp($val, $lower, $upper)
{
  return max($lower, min($upper, $val));
}

存在变量:您还可以检查无效输入(在lower > upper处)，并引发异常或反转输入.或者，您可以忽略输入的顺序，将其称为三位数中位数"函数，但这可能会造成混淆.

Variations exist: You can also check for invalid input, where lower > upper, and either throw an exception or reverse the inputs. Or you can ignore order of the inputs and call it a median-of-three function, but that can be confusing.

推荐答案

夹具是个好名字.

让我们将其作为标准.

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