还有一个问题：斜率优化有没有必要把除法化为乘法？？~~那样写貌似能减小精度误差但写起来太麻烦了~~ by May_wind @ 2021-09-13 18:17:57
有必要，显然并不麻烦 by SDqwq @ 2021-09-13 18:49:36