0.pre7.127:

[sbcl.git] / src / code / bignum.lisp

diff --git a/src/code/bignum.lisp b/src/code/bignum.lisp
index e66c5eb..4dc565f 100644 (file)
--- a/src/code/bignum.lisp
+++ b/src/code/bignum.lisp
@@ -10,9 +10,6 @@
 ;;;; files for more information.
 
 (in-package "SB!BIGNUM")
-
-(file-comment
-  "$Header$")
 \f
 ;;;; notes
 
@@ -111,13 +108,9 @@
 \f
 ;;;; What's a bignum?
 
-(eval-when (:compile-toplevel :load-toplevel :execute) ; necessary for DEFTYPE
-
 (defconstant digit-size 32)
 
-(defconstant maximum-bignum-length (1- (ash 1 (- 32 sb!vm:type-bits))))
-
-) ; EVAL-WHEN
+(defconstant maximum-bignum-length (1- (ash 1 (- 32 sb!vm:n-widetag-bits))))
 \f
 ;;;; internal inline routines
 
@@ -215,12 +208,12 @@
   (logand x (1- (ash 1 digit-size))))
 
 #!-32x16-divide
-;;; This takes three digits and returns the FLOOR'ed result of dividing the
-;;; first two as a 64-bit integer by the third.
+;;; This takes three digits and returns the FLOOR'ed result of
+;;; dividing the first two as a 64-bit integer by the third.
 ;;;
-;;; DO WEIRD let AND setq STUFF TO SLIME THE COMPILER INTO ALLOWING THE %FLOOR
-;;; TRANSFORM TO EXPAND INTO PSEUDO-ASSEMBLER FOR WHICH THE COMPILER CAN LATER
-;;; CORRECTLY ALLOCATE REGISTERS.
+;;; Do weird LET and SETQ stuff to bamboozle the compiler into allowing
+;;; the %FLOOR transform to expand into pseudo-assembler for which the
+;;; compiler can later correctly allocate registers.
 (defun %floor (a b c)
   (let ((a a) (b b) (c c))
     (declare (type bignum-element-type a b c))