From: paolo <paolo@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 15 Mar 2005 23:38:54 +0000 (+0000)
Subject: 2005-03-15  Paolo Carlini  <pcarlini@suse.de>
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=72ecee2737bc91969157d52d0df801c08a5b00da;p=thirdparty%2Fgcc.git

2005-03-15  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/20352
	* include/std/std_complex.h (pow(const complex<_Tp>&,
	const _Tp&)): On non-c99 platforms, don't try to compute
	log of complex zero.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@96538 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index bfda25db058a..20544556679a 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,10 @@
+2005-03-15  Paolo Carlini  <pcarlini@suse.de>
+
+	PR libstdc++/20352
+	* include/std/std_complex.h (pow(const complex<_Tp>&,
+	const _Tp&)): On non-c99 platforms, don't try to compute
+	log of complex zero.
+
 2005-03-10  Ben Elliston  <bje@au.ibm.com>
 
 	* testsuite/22_locale/locale/cons/12658_thread-1.cc: Don't XFAIL
diff --git a/libstdc++-v3/include/std/std_complex.h b/libstdc++-v3/include/std/std_complex.h
index 694acdc41c9e..6c1e00337303 100644
--- a/libstdc++-v3/include/std/std_complex.h
+++ b/libstdc++-v3/include/std/std_complex.h
@@ -944,6 +944,10 @@ namespace std
     complex<_Tp>
     pow(const complex<_Tp>& __x, const _Tp& __y)
     {
+#ifndef _GLIBCXX_USE_C99_COMPLEX
+      if (__x == _Tp())
+	return _Tp();
+#endif
       if (__x.imag() == _Tp() && __x.real() > _Tp())
         return pow(__x.real(), __y);