How does one construct a mask for th

[ed at ISM780.UUCP]

>    #define MSB (~(-1>>1))
>
>    Steve Ludlum, decvax!yale-co!ima!stevel, {cca!ihnp4!cbosgd}!ima!stevel

I think you need

#define MSB (~((unsigned)-1>>1))

Right shift is only guaranteed to fill by zeroes if the left operand is
unsigned.

Ed Lycklama
decvax!cca!ima!ism780!ed