cosl: Simplify for platforms where 'long double' == 'double'.

[gnulib.git] / lib / stdbool.in.h

diff --git a/lib/stdbool.in.h b/lib/stdbool.in.h
index 150a010..5b371fd 100644 (file)
--- a/lib/stdbool.in.h
+++ b/lib/stdbool.in.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001, 2002, 2003, 2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2003, 2006-2011 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software; you can redistribute it and/or modify
@@ -50,6 +50,9 @@
          with this substitute.  With this substitute, only the values 0 and 1
          give the expected result when converted to _Bool' or 'bool'.
 
+       - C99 allows the use of (_Bool)0.0 in constant expressions, but
+         this substitute cannot always provide this property.
+
    Also, it is suggested that programs use 'bool' rather than '_Bool';
    this isn't required, but 'bool' is more common.  */
 
@@ -58,7 +61,7 @@
 
 /* BeOS <sys/socket.h> already #defines false 0, true 1.  We use the same
    definitions below, but temporarily we have to #undef them.  */
-#ifdef __BEOS__
+#if defined __BEOS__ && !defined __HAIKU__
 # include <OS.h> /* defines bool but not _Bool */
 # undef false
 # undef true
@@ -73,7 +76,7 @@
    (see ISO C 99 6.7.2.2.(4)); however, '_Bool' must promote to 'int'
    (see ISO C 99 6.3.1.1.(2)).  So we add a negative value to the
    enum; this ensures that '_Bool' promotes to 'int'.  */
-#if defined __cplusplus || defined __BEOS__
+#if defined __cplusplus || (defined __BEOS__ && !defined __HAIKU__)
   /* A compiler known to have 'bool'.  */
   /* If the compiler already has both 'bool' and '_Bool', we can assume they
      are the same types.  */
@@ -97,10 +100,11 @@ typedef bool _Bool;
           "warning: _Bool is a keyword in ISO C99".
         Use of an enum type, with IRIX cc, leads to a stupid
           "warning(1185): enumerated type mixed with another type".
-        The only benefit of the enum type, debuggability, is not important
-        with these compilers.  So use 'signed char' and no typedef.  */
+        Even the existence of an enum type, without a typedef,
+          "Invalid enumerator. (badenum)" with HP-UX cc on Tru64.
+        The only benefit of the enum, debuggability, is not important
+        with these compilers.  So use 'signed char' and no enum.  */
 #  define _Bool signed char
-enum { false = 0, true = 1 };
 # else
    /* With this compiler, trust the _Bool type if the compiler has it.  */
 #  if !@HAVE__BOOL@