[英]Constraint behavior for a range of floating point numbers?
我正在研究这个问题,以获得关于为给定范围实现约束/包装的想法。
从那以后我可以确定以下内容
[n1,n2)
float Wrap(float x, float lo, float hi)
{
return x % Math.Abs(lo - hi);
}
这只适用于正数,因此建议这样做
float Constrain(float x, float lo, float hi)
{
float t = (x - lo) % (hi - lo);
return t < 0 ? t + hi : t + lo;
}
我仍然不确定如何从上面的代码中获得以下范围限制并希望得到一些帮助?
[n1,n2]
(n1,n2]
(n1,n2]
float constrainExclusiveInclusive(float x, float lo, float hi){
float result = Constrain(x, lo, hi);
if (result == lo){result = hi;}
return result;
}
[n1,n2]
float constrainInclusiveInclusive(float x, float lo, float hi){
float result = Constrain(x, lo, hi);
if (result == lo){
//somehow decide whether you want x to wrap to lo or hi
if (moonIsInTheSeventhHouse()){
result = lo;
}
else{
result = hi;
}
}
return result;
}
(n1,n2)
float constrainExclusiveExclusive(float x, float lo, float hi){
float result = Constrain(x, lo, hi);
if (result == lo){
throw new ArgumentException("No answer exists for the given inputs");
}
return result;
}
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