X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/lisp/blobdiff_plain/e2a3c9236277551b174d522db7161c4eec29f97f..7dcf04ad1295e4c19d0ad48b1b8cc4533cb8dd1e:/mdw-base.lisp

diff --git a/mdw-base.lisp b/mdw-base.lisp
index 269b398..0b68b8d 100644
--- a/mdw-base.lisp
+++ b/mdw-base.lisp
@@ -37,7 +37,10 @@ (defpackage #:mdw.base
 	   #:with-gensyms #:let*/gensyms #:with-places
 	   #:locp #:locf #:ref #:with-locatives
 	   #:update-place #:update-place-after
-	   #:incf-after #:decf-after))
+	   #:incf-after #:decf-after
+	   #:fixnump)
+  #+cmu (:import-from #:extensions #:fixnump))
+
 (in-package #:mdw.base)
 
 ;;;--------------------------------------------------------------------------
@@ -124,6 +127,13 @@ (compile-time-defun parse-body (body &key (allow-docstring-p t))
 				 (and decls (list (cons 'declare decls)))
 				 forms))))))))
 
+#-cmu
+(progn
+  (declaim (inline fixnump))
+  (defun fixnump (object)
+    "Answer non-nil if OBJECT is a fixnum, or nil if it isn't."
+    (typep object 'fixnum)))
+
 ;;;--------------------------------------------------------------------------
 ;;; Generating symbols.