X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fcompiler%2Fgeneric%2Fearly-vm.lisp;h=57c2d9d55b34388add8551a170cfe66885b2b1fc;hb=672b2f6cb751566526c7f3bb3de6b7d8424760e2;hp=9b854eaaa302342ec71bdda2252883656209ee4f;hpb=ee94b07644c1130e1dcadcfd2bd581bf641fa58e;p=sbcl.git

diff --git a/src/compiler/generic/early-vm.lisp b/src/compiler/generic/early-vm.lisp
index 9b854ea..57c2d9d 100644
--- a/src/compiler/generic/early-vm.lisp
+++ b/src/compiler/generic/early-vm.lisp
@@ -37,7 +37,7 @@
 ;;; a mask to extract the type from a data block header word
 (def!constant widetag-mask (1- (ash 1 n-widetag-bits)))
 
-(def!constant sb!xc:most-positive-fixnum  
+(def!constant sb!xc:most-positive-fixnum
     (1- (ash 1 (- n-word-bits n-lowtag-bits)))
   #!+sb-doc
   "the fixnum closest in value to positive infinity")
@@ -45,3 +45,12 @@
     (ash -1 (- n-word-bits n-lowtag-bits))
   #!+sb-doc
   "the fixnum closest in value to negative infinity")
+
+(def!constant most-positive-exactly-single-float-fixnum
+  (min #xffffff most-positive-fixnum))
+(def!constant most-negative-exactly-single-float-fixnum
+  (max #x-ffffff most-negative-fixnum))
+(def!constant most-positive-exactly-double-float-fixnum
+  (min #x1fffffffffffff most-positive-fixnum))
+(def!constant most-negative-exactly-double-float-fixnum
+  (max #x-1fffffffffffff most-negative-fixnum))