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authorBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:25 -0800
committerBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:25 -0800
commit3278b75942bdbe706f7a0fba87729bb1e935b68b (patch)
treedcad4048dfc0b38367047426b2b14501bf5ff257 /Transcen.scm
parentdb04688faa20f3576257c0fe41752ec435beab9a (diff)
downloadscm-3278b75942bdbe706f7a0fba87729bb1e935b68b.tar.gz
scm-3278b75942bdbe706f7a0fba87729bb1e935b68b.zip
Import Upstream version 5d2upstream/5d2
Diffstat (limited to 'Transcen.scm')
-rw-r--r--Transcen.scm13
1 files changed, 7 insertions, 6 deletions
diff --git a/Transcen.scm b/Transcen.scm
index 362420a..7898251 100644
--- a/Transcen.scm
+++ b/Transcen.scm
@@ -1,18 +1,18 @@
;; Copyright (C) 1992, 1993, 1995, 1997 Free Software Foundation, Inc.
-;;
+;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
-;;
+;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
-;;
+;;
;; You should have received a copy of the GNU General Public License
;; along with this software; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; the Free Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111, USA.
;;
;; As a special exception, the Free Software Foundation gives permission
;; for additional uses of the text contained in its release of GUILE.
@@ -36,7 +36,7 @@
;;
;; If you write modifications of your own for GUILE, it is your choice
;; whether to permit this exception to apply to your modifications.
-;; If you do not wish that, delete this exception notice.
+;; If you do not wish that, delete this exception notice.
;;;; "Transcen.scm", Complex trancendental functions for SCM.
;;; Author: Jerry D. Hedden.
@@ -61,7 +61,8 @@
(define expt
(let ((integer-expt integer-expt))
(lambda (z1 z2)
- (cond ((exact? z2)
+ (cond ((zero? z1) (if (zero? z2) 1 0))
+ ((exact? z2)
(integer-expt z1 z2))
((and (real? z2) (real? z1) (>= z1 0))
($expt z1 z2))