arduino map函数的实现原理是什么

map(value, fromLow, fromHigh, toLow, toHigh)DescriptionRe-maps a number from one range to another. That is, a value of fromLow would get mapped to toLow, a value of fromHigh to toHigh, values in-between to values in-between, etc.这个函数自己认为是一个非常有用的函数，它可以把