[Larceny-users] R6RS - Bitwise operations

[Ray Racine]

I'm looking for bitwise-logical-shift or at a minimum a
bitwise-logical-shift-right. R6RS bitwise appears to support only
arithmetic shifts.

Is this an oversight or on purpose??

I do note Larceny has fxrshl.

[William D Clinger]

Post by Ray Racine
I'm looking for bitwise-logical-shift or at a minimum a
bitwise-logical-shift-right. R6RS bitwise appears to support only
arithmetic shifts.
Is this an oversight or on purpose??

On purpose, I think. How would a logical right shift
on exact integers of unlimited precision differ from
an arithmetic right shift?

Post by Ray Racine
I do note Larceny has fxrshl.

On fixnums, which are of limited precision, arithmetic
shifts are not the same as logical shifts. Are you
looking for an R6RS-portable way to perform logical
shifts on fixnums?

Will