acinclude.m4 (GLIBCPP_CHECK_COMPLEX_MATH_SUPP): Just test for signbit and __signbit directly.

2002-03-22  Benjamin Kosnik  <bkoz@redhat.com>

	* acinclude.m4 (GLIBCPP_CHECK_COMPLEX_MATH_SUPP): Just test for
	signbit and __signbit directly.
	* aclocal.m4: Regenerate.
	* configure: Regenerate.
	* config.h.in: Regenerate.
	* libmath/Makefile.am: Simplify.
	* libmath/Makefile.in: Regenerate.
	* include/c_std/std_cmath.h: Update paths for include of cmath.tcc.

	* include/Makefile.am: Clean up handling of extra "C" header files.
	Add hooks for "C" compatibility headers.
	* include/Makefile.in: Regenerate.

	* include/c/*: Formatting tweaks, cleanups.
	* include/c_std/*: Same.

From-SVN: r51220

18 files changed, 89 insertions, 107 deletions

diff --git a/libstdc++-v3/include/c/std_cassert.h b/libstdc++-v3/include/c/std_cassert.h
index 32928380ba3..9b2bb72beab 100644
--- a/libstdc++-v3/include/c/std_cassert.h
+++ b/libstdc++-v3/include/c/std_cassert.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,9 +31,8 @@
 // ISO C++ 14882: 19.2  Assertions
 //
 
-// Note: This is not a conforming implementation.
-
 // No include guards on this header...
 
 #pragma GCC system_header
-#include <assert.h>
+
+#include_next <assert.h>
diff --git a/libstdc++-v3/include/c/std_cctype.h b/libstdc++-v3/include/c/std_cctype.h
index 5a423a08b8f..1271e072a69 100644
--- a/libstdc++-v3/include/c/std_cctype.h
+++ b/libstdc++-v3/include/c/std_cctype.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: <ccytpe>
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CCTYPE
-#define _CPP_CCTYPE 1
+#ifndef _CCTYPE
+#define _CCTYPE 1
 
 #pragma GCC system_header
-#include <ctype.h>
+
+#include_next <ctype.h>
 
 #endif 
diff --git a/libstdc++-v3/include/c/std_cerrno.h b/libstdc++-v3/include/c/std_cerrno.h
index 23a0060a884..dea3c0e9398 100644
--- a/libstdc++-v3/include/c/std_cerrno.h
+++ b/libstdc++-v3/include/c/std_cerrno.h
@@ -1,6 +1,6 @@
-// The -*- C++ -*- error number header.
+// -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 19.3  Error numbers
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CERRNO
-#define _CPP_CERRNO 1
+#ifndef _CERRNO
+#define _CERRNO 1
 
 #pragma GCC system_header
-#include <errno.h>
+
+#include_next <errno.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_cfloat.h b/libstdc++-v3/include/c/std_cfloat.h
index 744699709e5..bcdb5f7bc29 100644
--- a/libstdc++-v3/include/c/std_cfloat.h
+++ b/libstdc++-v3/include/c/std_cfloat.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 18.2.2  Implementation properties: C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CFLOAT
-#define _CPP_CFLOAT 1
+#ifndef _CFLOAT
+#define _CFLOAT 1
 
 #pragma GCC system_header
-#include <float.h>
+
+#include_next <float.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_ciso646.h b/libstdc++-v3/include/c/std_ciso646.h
index c9f49fb6fc3..ed9f72ec53f 100644
--- a/libstdc++-v3/include/c/std_ciso646.h
+++ b/libstdc++-v3/include/c/std_ciso646.h
@@ -1,6 +1,6 @@
-// -*- C++ -*- std header.
+// -*- C++ -*- forwarding header.
 
-// Copyright (C) 2001 Free Software Foundation, Inc.
+// Copyright (C) 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
@@ -28,11 +28,10 @@
 // the GNU General Public License.
 
 /** @file ciso646
- *  This is a Standard C++ Library file.  You should @c #include this file
+ *  This is a Standard C++ Library file.  You should @c #include_next this file
  *  in your programs, rather than any of the "st[dl]_*.h" implementation files.
  *
  *  This is the C++ version of the Standard C Library header @c iso646.h,
  *  and its contents are (mostly) the same as that header, but are all
  *  contained in the namespace @c std.
  */
-
diff --git a/libstdc++-v3/include/c/std_climits.h b/libstdc++-v3/include/c/std_climits.h
index 05795a6adb6..acfbe9b57bf 100644
--- a/libstdc++-v3/include/c/std_climits.h
+++ b/libstdc++-v3/include/c/std_climits.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 18.2.2  Implementation properties: C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CLIMITS
-#define _CPP_CLIMITS	1
+#ifndef _CLIMITS
+#define _CLIMITS	1
 
 #pragma GCC system_header
-#include <limits.h>
+
+#include_next <limits.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_clocale.h b/libstdc++-v3/include/c/std_clocale.h
index 69ea1f6912c..6ac30a77fd7 100644
--- a/libstdc++-v3/include/c/std_clocale.h
+++ b/libstdc++-v3/include/c/std_clocale.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 18.2.2  Implementation properties: C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CLOCALE
-#define _CPP_CLOCALE 1
+#ifndef _CLOCALE
+#define _CLOCALE 1
 
 #pragma GCC system_header
-#include <locale.h>
+
+#include_next <locale.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_cmath.h b/libstdc++-v3/include/c/std_cmath.h
index 2625eac91fb..fb53a2dafbf 100644
--- a/libstdc++-v3/include/c/std_cmath.h
+++ b/libstdc++-v3/include/c/std_cmath.h
@@ -1,6 +1,6 @@
-// -*- C++ -*- C math library.
+// -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 26.5  C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CMATH
-#define _CPP_CMATH 1
+#ifndef _CMATH
+#define _CMATH 1
  
 #pragma GCC system_header
-#include <math.h>
+
+#include_next <math.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_csetjmp.h b/libstdc++-v3/include/c/std_csetjmp.h
index 45e3da5d693..77616608495 100644
--- a/libstdc++-v3/include/c/std_csetjmp.h
+++ b/libstdc++-v3/include/c/std_csetjmp.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 20.4.6  C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CSETJMP
-#define _CPP_CSETJMP 1
+#ifndef _CSETJMP
+#define _CSETJMP 1
 
 #pragma GCC system_header
-#include <setjmp.h>
+
+#include_next <setjmp.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_csignal.h b/libstdc++-v3/include/c/std_csignal.h
index da585dd0ae1..6f2790c5b31 100644
--- a/libstdc++-v3/include/c/std_csignal.h
+++ b/libstdc++-v3/include/c/std_csignal.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 20.4.6  C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CSIGNAL
-#define _CPP_CSIGNAL 1
+#ifndef _CSIGNAL
+#define _CSIGNAL 1
 
 #pragma GCC system_header
-#include <signal.h>
+
+#include_next <signal.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_cstdarg.h b/libstdc++-v3/include/c/std_cstdarg.h
index 5d2a2d88c54..b91c3c00a26 100644
--- a/libstdc++-v3/include/c/std_cstdarg.h
+++ b/libstdc++-v3/include/c/std_cstdarg.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 20.4.6  C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CSTDARG
-#define _CPP_CSTDARG 1
+#ifndef _CSTDARG
+#define _CSTDARG 1
 
 #pragma GCC system_header
-#include <stdarg.h>
+
+#include_next <stdarg.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_cstddef.h b/libstdc++-v3/include/c/std_cstddef.h
index 456f6ca9db1..7502c04e18a 100644
--- a/libstdc++-v3/include/c/std_cstddef.h
+++ b/libstdc++-v3/include/c/std_cstddef.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 18.1  Types
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CSTDDEF
-#define _CPP_CSTDDEF 1
+#ifndef _CSTDDEF
+#define _CSTDDEF 1
 
 #pragma GCC system_header
-#include <stddef.h>
+
+#include_next <stddef.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_cstdio.h b/libstdc++-v3/include/c/std_cstdio.h
index b7b29703d1f..32d1488f554 100644
--- a/libstdc++-v3/include/c/std_cstdio.h
+++ b/libstdc++-v3/include/c/std_cstdio.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 27.8.2  C Library files
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CSTDIO
-#define _CPP_CSTDIO 1
+#ifndef _CSTDIO
+#define _CSTDIO 1
 
 #pragma GCC system_header
-#include <stdio.h>
+
+#include_next <stdio.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_cstdlib.h b/libstdc++-v3/include/c/std_cstdlib.h
index 75402e4aad0..1c34b36b601 100644
--- a/libstdc++-v3/include/c/std_cstdlib.h
+++ b/libstdc++-v3/include/c/std_cstdlib.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 20.4.6  C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CSTDLIB
-#define _CPP_CSTDLIB 1
+#ifndef _CSTDLIB
+#define _CSTDLIB 1
 
 #pragma GCC system_header
-#include <stdlib.h>
+
+#include_next <stdlib.h>
 
 #endif 
diff --git a/libstdc++-v3/include/c/std_cstring.h b/libstdc++-v3/include/c/std_cstring.h
index 6a176559ce4..e5c786d2973 100644
--- a/libstdc++-v3/include/c/std_cstring.h
+++ b/libstdc++-v3/include/c/std_cstring.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 20.4.6  C library
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CSTRING
-#define _CPP_CSTRING 1
+#ifndef _CSTRING
+#define _CSTRING 1
 
 #pragma GCC system_header
-#include <string.h>
+
+#include_next <string.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_ctime.h b/libstdc++-v3/include/c/std_ctime.h
index bf53c50347c..17d965afa90 100644
--- a/libstdc++-v3/include/c/std_ctime.h
+++ b/libstdc++-v3/include/c/std_ctime.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: 20.5  Date and time
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CTIME
-#define _CPP_CTIME 1
+#ifndef _CTIME
+#define _CTIME 1
 
 #pragma GCC system_header
-#include <time.h>
+
+#include_next <time.h>
 
 #endif
diff --git a/libstdc++-v3/include/c/std_cwchar.h b/libstdc++-v3/include/c/std_cwchar.h
index 713f4445773..92b53b0379a 100644
--- a/libstdc++-v3/include/c/std_cwchar.h
+++ b/libstdc++-v3/include/c/std_cwchar.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -28,15 +28,14 @@
 // the GNU General Public License.
 
 //
-// ISO C++ 14882: ???
+// ISO C++ 14882: 21.4
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CWCHAR
-#define _CPP_CWCHAR 1
+#ifndef _CWCHAR
+#define _CWCHAR 1
 
 #pragma GCC system_header
-#include <wchar.h>
+
+#include_next <wchar.h>
 
 #endif 
diff --git a/libstdc++-v3/include/c/std_cwctype.h b/libstdc++-v3/include/c/std_cwctype.h
index 6f8a7c8f28b..53aa0d0f91b 100644
--- a/libstdc++-v3/include/c/std_cwctype.h
+++ b/libstdc++-v3/include/c/std_cwctype.h
@@ -1,6 +1,6 @@
 // -*- C++ -*- forwarding header.
 
-// Copyright (C) 2000 Free Software Foundation, Inc.
+// Copyright (C) 2000, 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
@@ -31,12 +31,11 @@
 // ISO C++ 14882: <cwctype>
 //
 
-// Note: This is not a conforming implementation.
-
-#ifndef _CPP_CWCTYPE
-#define _CPP_CWCTYPE 1
+#ifndef _CWCTYPE
+#define _CWCTYPE 1
 
 #pragma GCC system_header
-#include <wctype.h>
+
+#include_next <wctype.h>
 
 #endif