使用set size random-float 1
时如何将小数位数设置为2?
现在我有0.12433242
,但我想要0.12
(大约)。
我知道有show precision 2
,但我不知道如何在该命令中包括它。
谢谢
答案 0 :(得分:3)
Val,如果在显示命令(如show或print)中使用“ precision”,它将仅影响显示的值,而不会触及实际值。如果在set或let命令中使用“ precision”,它将更改实际的存储值,并将其四舍五入到许多小数位。
您可以尝试以下代码:
to setup
let x random-float 1
type "original value has high precision: "
print x
type "shown as low precision but value still high precision: "
print precision x 3
type "confirm we didn't affect the original value: "
print x
;; actually change the value to 3 decimal places using "precision" in a set command
set x precision x 3
;; confirm that worked
type "New value actually has fewer decimals: "
print x
end