Sync with the latest Gnulib code (d27c820595)

1 files changed, 18 insertions, 12 deletions

diff --git a/gl/float.in.h b/gl/float.in.h
index 84e1950f..a4183765 100644
--- a/gl/float.in.h
+++ b/gl/float.in.h
@@ -1,19 +1,19 @@
 /* A correct <float.h>.
 
-   Copyright (C) 2007-2013 Free Software Foundation, Inc.
+   Copyright (C) 2007-2022 Free Software Foundation, Inc.
 
-   This program 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 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file 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.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _@GUARD_PREFIX@_FLOAT_H
 
@@ -62,8 +62,8 @@
 
 /* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
    precision in the compiler but 64 bits of precision at runtime.  See
-   <http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00063.html>.  */
-#if defined __i386__ && defined __FreeBSD__
+   <https://lists.gnu.org/r/bug-gnulib/2008-07/msg00063.html>.  */
+#if defined __i386__ && (defined __FreeBSD__ || defined __DragonFly__)
 /* Number of mantissa units, in base FLT_RADIX.  */
 # undef LDBL_MANT_DIG
 # define LDBL_MANT_DIG   64
@@ -81,7 +81,7 @@
 # define LDBL_MAX_EXP    16384
 /* Minimum positive normalized number.  */
 # undef LDBL_MIN
-# define LDBL_MIN        3.3621031431120935E-4932L /* = 0x1p-16382L */
+# define LDBL_MIN        3.362103143112093506262677817321752E-4932L /* = 0x1p-16382L */
 /* Maximum representable finite number.  */
 # undef LDBL_MAX
 /* LDBL_MAX is represented as { 0xFFFFFFFF, 0xFFFFFFFF, 32766 }.
@@ -93,11 +93,14 @@
      extern const long double LDBL_MAX;
 
    Unfortunately, this is not a constant expression.  */
+# if !GNULIB_defined_long_double_union
 union gl_long_double_union
   {
     struct { unsigned int lo; unsigned int hi; unsigned int exponent; } xd;
     long double ld;
   };
+#  define GNULIB_defined_long_double_union 1
+# endif
 extern const union gl_long_double_union gl_LDBL_MAX;
 # define LDBL_MAX (gl_LDBL_MAX.ld)
 /* Minimum e such that 10^e is in the range of normalized numbers.  */
@@ -146,11 +149,14 @@ extern const union gl_long_double_union gl_LDBL_MAX;
 
    Unfortunately, this is not a constant expression, and the latter expression
    does not work well when GCC is optimizing..  */
+# if !GNULIB_defined_long_double_union
 union gl_long_double_union
   {
     struct { double hi; double lo; } dd;
     long double ld;
   };
+#  define GNULIB_defined_long_double_union 1
+# endif
 extern const union gl_long_double_union gl_LDBL_MAX;
 # define LDBL_MAX (gl_LDBL_MAX.ld)
 #endif