* configure.in (LIMITS_INC_SRCDIR): New variable.

	* configure.target (LIMITSH): New variable.
	* porting.texi: Discuss numeric limits.
	* config/cpu/generic/bits/limits.h: New file.
	* config/cpu/i386/bits/limits.h: New file.
	* include/Makefile.am: Install bits/limits.h.
	* include/bits/c++config: Include bits/limits.h.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44877 138bc75d-0d04-0410-961f-82ee72b054a4

2 files changed, 73 insertions, 0 deletions

diff --git a/libstdc++-v3/config/cpu/generic/bits/limits.h b/libstdc++-v3/config/cpu/generic/bits/limits.h
new file mode 100644
index 00000000000..8fa5a82145f
--- /dev/null
+++ b/libstdc++-v3/config/cpu/generic/bits/limits.h
@@ -0,0 +1,40 @@
+// Copyright (C) 2001 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
+// 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 library 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 library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+#ifndef _GLIBCPP_CPU_LIMITS
+#define _GLIBCPP_CPU_LIMITS 1
+
+// Nothing is defined in the generic file.  In that way, we fall back
+// on the defaults in std_limits.h.
+
+// If you need to override these defaults, you can either use a
+// CPU-specific version (in which case you must modify
+// configure.target) or you must add the overrides to your
+// os_defines.h.  In general, if all systems for your CPU use the
+// same values, it is best to use a cpu-specific configuration file.
+
+#endif
diff --git a/libstdc++-v3/config/cpu/i386/bits/limits.h b/libstdc++-v3/config/cpu/i386/bits/limits.h
new file mode 100644
index 00000000000..be304e2d805
--- /dev/null
+++ b/libstdc++-v3/config/cpu/i386/bits/limits.h
@@ -0,0 +1,33 @@
+// Copyright (C) 2001 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
+// 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 library 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 library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+#ifndef _GLIBCPP_CPU_LIMITS
+#define _GLIBCPP_CPU_LIMITS 1
+
+#define __glibcpp_long_double_bits 80
+
+#endif