PR libstdc++/10689

[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / include / std / std_complex.h

diff --git a/libstdc++-v3/include/std/std_complex.h b/libstdc++-v3/include/std/std_complex.h
index 18dd867..e943f5e 100644 (file)
--- a/libstdc++-v3/include/std/std_complex.h
+++ b/libstdc++-v3/include/std/std_complex.h
@@ -1,6 +1,7 @@
 // The template and inlines for the -*- C++ -*- complex number classes.
 
-// Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
+// Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -34,9 +35,9 @@
 // Improved by Gabriel Dos Reis <dosreis@cmla.ens-cachan.fr>
 //
 
-/** @file std_complex.h
- *  This is an internal header file, included by other library headers.
- *  You should not attempt to use it directly.
+/** @file complex
+ *  This is a Standard C++ Library header.  You should @c #include this header
+ *  in your programs, rather than any of the "st[dl]_*.h" implementation files.
  */
 
 #ifndef _CPP_COMPLEX
@@ -389,7 +390,7 @@ namespace std
       __s.flags(__os.flags());
       __s.imbue(__os.getloc());
       __s.precision(__os.precision());
-      __s << '(' << __x.real() << "," << __x.imag() << ')';
+      __s << '(' << __x.real() << ',' << __x.imag() << ')';
       return __os << __s.str();
     }
 
@@ -410,7 +411,7 @@ namespace std
     {
       _Tp __x = __z.real();
       _Tp __y = __z.imag();
-      const _Tp __s = max(abs(__x), abs(__y));
+      const _Tp __s = std::max(abs(__x), abs(__y));
       if (__s == _Tp())  // well ...
         return __s;
       __x /= __s; 
@@ -455,7 +456,7 @@ namespace std
     inline _Tp
     norm(const complex<_Tp>& __z)
     {
-      return _Norm_helper<__is_floating<_Tp>::_M_type>::_S_do_it(__z);
+      return _Norm_helper<__is_floating<_Tp>::_M_type && !_GLIBCPP_FAST_MATH>::_S_do_it(__z);
     }
 
   template<typename _Tp>
@@ -564,24 +565,30 @@ namespace std
     }
 
   template<typename _Tp>
-    inline complex<_Tp>
+    complex<_Tp>
     pow(const complex<_Tp>& __x, const _Tp& __y)
     {
-      return exp(__y * log(__x));
+      if (__x.imag() == _Tp())
+        return pow(__x.real(), __y);
+
+      complex<_Tp> __t = log(__x);
+      return polar(exp(__y * __t.real()), __y * __t.imag());
     }
 
   template<typename _Tp>
     inline complex<_Tp>
     pow(const complex<_Tp>& __x, const complex<_Tp>& __y)
     {
-      return exp(__y * log(__x));
+      return __x == _Tp() ? _Tp() : exp(__y * log(__x));
     }
 
   template<typename _Tp>
     inline complex<_Tp>
     pow(const _Tp& __x, const complex<_Tp>& __y)
     {
-      return exp(__y * log(__x));
+      return __x == _Tp()
+        ? _Tp()
+        : polar(pow(__x, __y.real()), __y.imag() * log(__x));
     }
 
   // 26.2.3  complex specializations