+2024-06-03 Paul Eggert <eggert@cs.ucla.edu>
+
+ ieee754-h: port to Android NDK r26
+ Problem reported by Po Lu in:
+ https://lists.gnu.org/r/bug-gnulib/2024-06/msg00015.html
+ * lib/ieee754.in.h (_IEEE754_BYTE_ORDER, _IEEE754_BIG_ENDIAN)
+ (_IEEE754_LITTLE_ENDIAN, _IEEE754_FLOAT_WORD_ORDER): New macros.
+ All uses of __BYTE_ORDER, __BIG_ENDIAN, __LITTLE_ENDIAN,
+ __FLOAT_WORD_ORDER changed to use these new macros.
+ [!_GL_GNULIB_HEADER]: Include bits/endian.h, not endian.h,
+ as that’s what glibc does now.
+ [_GL_GNULIB_HEADER]: Include endian.h instead of rolling our own.
+ (__BEGIN_DECLS, __END_DECLS): Remove. All uses replaced
+ by definiens.
+ * modules/ieee754-h (Depends-on): Add endian.
+
2024-06-03 Bruno Haible <bruno@clisp.org>
readlinkat: Work around a Cygwin 3.3.6 bug.
<https://www.gnu.org/licenses/>. */
#ifndef _IEEE754_H
-
#define _IEEE754_H 1
#ifndef _GL_GNULIB_HEADER
/* Ordinary glibc usage. */
# include <features.h>
-# include <endian.h>
+# include <bits/endian.h>
+# define _IEEE754_BYTE_ORDER __BYTE_ORDER
+# define _IEEE754_BIG_ENDIAN __BIG_ENDIAN
+# define _IEEE754_LITTLE_ENDIAN __LITTLE_ENDIAN
+# define _IEEE754_FLOAT_WORD_ORDER __FLOAT_WORD_ORDER
#else
/* Gnulib usage. */
-# ifndef __BEGIN_DECLS
-# ifdef __cplusplus
-# define __BEGIN_DECLS extern "C" {
-# define __END_DECLS }
-# else
-# define __BEGIN_DECLS
-# define __END_DECLS
-# endif
-# endif
-# ifndef __FLOAT_WORD_ORDER
-# define __LITTLE_ENDIAN 1234
-# define __BIG_ENDIAN 4321
-# ifdef WORDS_BIGENDIAN
-# define __BYTE_ORDER __BIG_ENDIAN
-# else
-# define __BYTE_ORDER __LITTLE_ENDIAN
-# endif
-# define __FLOAT_WORD_ORDER __BYTE_ORDER
-# endif
+# include <endian.h>
+# define _IEEE754_BYTE_ORDER BYTE_ORDER
+# define _IEEE754_BIG_ENDIAN BIG_ENDIAN
+# define _IEEE754_LITTLE_ENDIAN LITTLE_ENDIAN
+# define _IEEE754_FLOAT_WORD_ORDER BYTE_ORDER
#endif
-__BEGIN_DECLS
+#ifdef __cplusplus
+extern "C" {
+#endif
union ieee754_float
{
/* This is the IEEE 754 single-precision format. */
struct
{
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:8;
unsigned int mantissa:23;
#endif /* Big endian. */
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
unsigned int mantissa:23;
unsigned int exponent:8;
unsigned int negative:1;
/* This format makes it easier to see if a NaN is a signalling NaN. */
struct
{
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:8;
unsigned int quiet_nan:1;
unsigned int mantissa:22;
#endif /* Big endian. */
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
unsigned int mantissa:22;
unsigned int quiet_nan:1;
unsigned int exponent:8;
/* This is the IEEE 754 double-precision format. */
struct
{
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:11;
/* Together these comprise the mantissa. */
unsigned int mantissa0:20;
unsigned int mantissa1:32;
#endif /* Big endian. */
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-# if __FLOAT_WORD_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
+# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
unsigned int mantissa0:20;
unsigned int exponent:11;
unsigned int negative:1;
/* This format makes it easier to see if a NaN is a signalling NaN. */
struct
{
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:11;
unsigned int quiet_nan:1;
unsigned int mantissa0:19;
unsigned int mantissa1:32;
#else
-# if __FLOAT_WORD_ORDER == __BIG_ENDIAN
+# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
unsigned int mantissa0:19;
unsigned int quiet_nan:1;
unsigned int exponent:11;
/* This is the IEEE 854 double-extended-precision format. */
struct
{
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:15;
unsigned int empty:16;
unsigned int mantissa0:32;
unsigned int mantissa1:32;
#endif
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-# if __FLOAT_WORD_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
+# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
unsigned int exponent:15;
unsigned int negative:1;
unsigned int empty:16;
/* This is for NaNs in the IEEE 854 double-extended-precision format. */
struct
{
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:15;
unsigned int empty:16;
unsigned int mantissa0:30;
unsigned int mantissa1:32;
#endif
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-# if __FLOAT_WORD_ORDER == __BIG_ENDIAN
+#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
+# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
unsigned int exponent:15;
unsigned int negative:1;
unsigned int empty:16;
#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
-__END_DECLS
+#ifdef __cplusplus
+}
+#endif
#endif /* ieee754.h */