From: Christophe Rhodes <csr21@cam.ac.uk>
Date: Tue, 15 Jun 2004 21:00:00 +0000 (+0000)
Subject: 0.8.11.12:
X-Git-Url: http://repo.macrolet.net/gitweb/?a=commitdiff_plain;h=97eb3923d01211622a8be3b60f1afe4dfd217901;p=sbcl.git

0.8.11.12:
	Better EXPT behaviour
	... or at least different EXPT behaviour.  Arrange to (attempt to)
		return a floating point 1, rather than a NaN, when the
		base is NaN and the exponent is zero.
---

diff --git a/src/code/irrat.lisp b/src/code/irrat.lisp
index e7131b0..b821b7a 100644
--- a/src/code/irrat.lisp
+++ b/src/code/irrat.lisp
@@ -118,7 +118,10 @@
   #!+sb-doc
   "Return BASE raised to the POWER."
   (if (zerop power)
-      (1+ (* base power))
+      (let ((result (1+ (* base power))))
+	(if (and (floatp result) (float-nan-p result))
+	    (float 1 result)
+	    result))
     (labels (;; determine if the double float is an integer.
 	     ;;  0 - not an integer
 	     ;;  1 - an odd int
diff --git a/version.lisp-expr b/version.lisp-expr
index 2b07b2f..2673bee 100644
--- a/version.lisp-expr
+++ b/version.lisp-expr
@@ -17,4 +17,4 @@
 ;;; checkins which aren't released. (And occasionally for internal
 ;;; versions, especially for internal versions off the main CVS
 ;;; branch, it gets hairier, e.g. "0.pre7.14.flaky4.13".)
-"0.8.11.11"
+"0.8.11.12"