--- gforth/test/gforth.fs	2007/12/31 17:34:59	1.14
+++ gforth/test/gforth.fs	2011/08/10 13:55:03	1.18
@@ -1,12 +1,12 @@
 \ test some gforth extension words
 
-\ Copyright (C) 2003,2004,2005,2006,2007 Free Software Foundation, Inc.
+\ Copyright (C) 2003,2004,2005,2006,2007,2009 Free Software Foundation, Inc.
 
 \ This file is part of Gforth.
 
 \ Gforth 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
+\ as published by the Free Software Foundation, either version 3
 \ of the License, or (at your option) any later version.
 
 \ This program is distributed in the hope that it will be useful,
@@ -15,8 +15,7 @@
 \ GNU General Public License for more details.
 
 \ You should have received a copy of the GNU General Public License
-\ along with this program; if not, write to the Free Software
-\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
+\ along with this program. If not, see http://www.gnu.org/licenses/.
 
 require ./tester.fs
 decimal
@@ -88,3 +87,24 @@ decimal
 
 { -5 try-test3 -> 10 }
 {  5 try-test3 ->  6 }
+
+\ fcopysign
+
+t{  5e  1e fcopysign ->  5e }t
+t{ -5e  1e fcopysign ->  5e }t
+t{  5e -1e fcopysign -> -5e }t
+t{ -5e -1e fcopysign -> -5e }t
+\ tests involving -0e?
+
+\ ?of
+
+: sgn ( n1 -- n2 )
+    case
+	dup 0< ?of drop -1 endof
+	dup 0> ?of drop 1 endof
+	dup
+    endcase ;
+
+t{  5 sgn ->  1 }
+t{ -3 sgn -> -1 }
+t{  0 sgn ->  0 }