Implement thread control primitives for Win32.

[gnulib.git] / lib / printf-frexp.c

diff --git a/lib/printf-frexp.c b/lib/printf-frexp.c
index e4a5945..da5c9c3 100644 (file)
--- a/lib/printf-frexp.c
+++ b/lib/printf-frexp.c
@@ -1,78 +1,75 @@
 /* Split a double into fraction and mantissa, for hexadecimal printf.
    Copyright (C) 2007 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program 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 program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
-#if !(defined USE_LONG_DOUBLE && !HAVE_LONG_DOUBLE)
-
 /* Specification.  */
-# ifdef USE_LONG_DOUBLE
-#  include "printf-frexpl.h"
-# else
-#  include "printf-frexp.h"
-# endif
+#ifdef USE_LONG_DOUBLE
+# include "printf-frexpl.h"
+#else
+# include "printf-frexp.h"
+#endif
 
-# include <float.h>
-# include <math.h>
-# ifdef USE_LONG_DOUBLE
-#  include "fpucw.h"
-# endif
+#include <float.h>
+#include <math.h>
+#ifdef USE_LONG_DOUBLE
+# include "fpucw.h"
+#endif
 
 /* This file assumes FLT_RADIX = 2.  If FLT_RADIX is a power of 2 greater
    than 2, or not even a power of 2, some rounding errors can occur, so that
    then the returned mantissa is only guaranteed to be <= 2.0, not < 2.0.  */
 
-# ifdef USE_LONG_DOUBLE
-#  define FUNC printf_frexpl
-#  define DOUBLE long double
-#  define MIN_EXP LDBL_MIN_EXP
-#  if HAVE_FREXPL_IN_LIBC && HAVE_LDEXPL_IN_LIBC
-#   define USE_FREXP_LDEXP
-#   define FREXP frexpl
-#   define LDEXP ldexpl
-#  endif
-#  define DECL_ROUNDING DECL_LONG_DOUBLE_ROUNDING
-#  define BEGIN_ROUNDING() BEGIN_LONG_DOUBLE_ROUNDING ()
-#  define END_ROUNDING() END_LONG_DOUBLE_ROUNDING ()
-#  define L_(literal) literal##L
-# else
-#  define FUNC printf_frexp
-#  define DOUBLE double
-#  define MIN_EXP DBL_MIN_EXP
-#  if HAVE_FREXP_IN_LIBC && HAVE_LDEXP_IN_LIBC
-#   define USE_FREXP_LDEXP
-#   define FREXP frexp
-#   define LDEXP ldexp
-#  endif
-#  define DECL_ROUNDING
-#  define BEGIN_ROUNDING()
-#  define END_ROUNDING()
-#  define L_(literal) literal
+#ifdef USE_LONG_DOUBLE
+# define FUNC printf_frexpl
+# define DOUBLE long double
+# define MIN_EXP LDBL_MIN_EXP
+# if HAVE_FREXPL_IN_LIBC && HAVE_LDEXPL_IN_LIBC
+#  define USE_FREXP_LDEXP
+#  define FREXP frexpl
+#  define LDEXP ldexpl
+# endif
+# define DECL_ROUNDING DECL_LONG_DOUBLE_ROUNDING
+# define BEGIN_ROUNDING() BEGIN_LONG_DOUBLE_ROUNDING ()
+# define END_ROUNDING() END_LONG_DOUBLE_ROUNDING ()
+# define L_(literal) literal##L
+#else
+# define FUNC printf_frexp
+# define DOUBLE double
+# define MIN_EXP DBL_MIN_EXP
+# if HAVE_FREXP_IN_LIBC && HAVE_LDEXP_IN_LIBC
+#  define USE_FREXP_LDEXP
+#  define FREXP frexp
+#  define LDEXP ldexp
 # endif
+# define DECL_ROUNDING
+# define BEGIN_ROUNDING()
+# define END_ROUNDING()
+# define L_(literal) literal
+#endif
 
 DOUBLE
-FUNC (DOUBLE x, int *exp)
+FUNC (DOUBLE x, int *expptr)
 {
   int exponent;
   DECL_ROUNDING
 
   BEGIN_ROUNDING ();
 
-# ifdef USE_FREXP_LDEXP
+#ifdef USE_FREXP_LDEXP
   /* frexp and ldexp are usually faster than the loop below.  */
   x = FREXP (x, &exponent);
 
@@ -84,7 +81,7 @@ FUNC (DOUBLE x, int *exp)
       x = LDEXP (x, exponent - (MIN_EXP - 1));
       exponent = MIN_EXP - 1;
     }
-# else
+#else
   {
     /* Since the exponent is an 'int', it fits in 64 bits.  Therefore the
        loops are executed no more than 64 times.  */
@@ -182,18 +179,10 @@ FUNC (DOUBLE x, int *exp)
     /* Here either x < 1.0 and exponent = MIN_EXP - 1,
        or 1.0 <= x < 2.0 and exponent >= MIN_EXP - 1.  */
   }
-# endif
+#endif
 
   END_ROUNDING ();
 
-  *exp = exponent;
+  *expptr = exponent;
   return x;
 }
-
-#else
-
-/* This declaration is solely to ensure that after preprocessing
-   this file is never empty.  */
-typedef int dummy;
-
-#endif