bit 16 reverser logic

reverser available from calculated values via bitwise remainder operation.

reverser

1. declare call

const c=v=>reduce(false,8,(a,_,i)=>a<<1|1&v>>>i,0)

2. declare values

,vs=map(false,new Uint8Array(256),(_,i)=>c(i))

3. declare this.reverse

this.reverse=(v,l)=>(vs[0xff&v]<<8|vs[0xff&v>>8])>>>16-l