[MC-124223] '/data get' can return imprecise values

The bug

Running /data get can return imprecise values depending on the value type.

How to reproduce

/summon armor_stand ~ ~ ~ {Pose:{Head:[0.01f,0.01f,0.01f]}}
/data get entity @e[type=armor_stand,sort=nearest,limit=1] Pose.Head[0] 10000
→ Result is 99
/data get entity @e[type=armor_stand,sort=nearest,limit=1]
→ NBT says [0.01f,0.01f,0.01f]. /data get is incorrectly rounding 0.01f to 0.009999

Comments 1

Brian McNamara 2018-01-14T02:01:11Z

WAI; this is floating-point. If you want to perform a 'round upwards', you can do it yourself; one way is by changing 10000 to 20000, adding 1, and dividing by 2 the result.