[r6rs-discuss] fxarithmetic-shift

From: Abdulaziz Ghuloum <aghuloum>
Date: Thu, 13 Sep 2007 21:32:11 -0400

Page 44 of r593rs-lib says about (fxarithmetic-shift fx1 fx2):

   If (* fx1 (expt 2 fx2)) is a fixnum, that fixnum is returned.
   Otherwise, an exception [...] is raised.

Is the intension that (fxarithmetic-shift 5 -2) must signal an error?
Or was the above a typo? Maybe it should be corrected to be:

   If (floor (* fx1 (expt 2 fx2))) is a fixnum, that fixnum is [...]

Also, at the same paragraph, there is a mention of a "fixnum-"
procedure that was dropped at some point. Should change to "fx-".

Also, is there a good reason for restricting the range of the second
argument to be less than (fixnum-width)?

Aziz,,,
Received on Thu Sep 13 2007 - 21:32:11 UTC