libc/include/sys/cdefs.h - platform/bionic - Git at Google

 /*	$NetBSD: cdefs.h,v 1.58 2004/12/11 05:59:00 christos Exp $	*/

 /*
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * Berkeley Software Design, Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *	@(#)cdefs.h	8.8 (Berkeley) 1/9/95
  */

 #ifndef	_SYS_CDEFS_H_
 #define	_SYS_CDEFS_H_

 /*
  * Testing against Clang-specific extensions.
  */

 #ifndef __has_extension
 #define __has_extension         __has_feature
 #endif
 #ifndef __has_feature
 #define __has_feature(x)        0
 #endif
 #ifndef __has_include
 #define __has_include(x)        0
 #endif
 #ifndef __has_builtin
 #define __has_builtin(x)        0
 #endif
 #ifndef __has_attribute
 #define __has_attribute(x)      0
 #endif


 /*
  * Macro to test if we're using a GNU C compiler of a specific vintage
  * or later, for e.g. features that appeared in a particular version
  * of GNU C.  Usage:
  *
  *	#if __GNUC_PREREQ(major, minor)
  *	...cool feature...
  *	#else
  *	...delete feature...
  *	#endif
  */
 #ifdef __GNUC__
 #define	__GNUC_PREREQ(x, y)						\
 	((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) ||			\
 	 (__GNUC__ > (x)))
 #else
 #define	__GNUC_PREREQ(x, y)	0
 #endif

 #define __strong_alias(alias, sym) \
     __asm__(".global " #alias "\n" \
             #alias " = " #sym);

 #if defined(__cplusplus)
 #define	__BEGIN_DECLS		extern "C" {
 #define	__END_DECLS		}
 #define	__static_cast(x,y)	static_cast<x>(y)
 #else
 #define	__BEGIN_DECLS
 #define	__END_DECLS
 #define	__static_cast(x,y)	(x)y
 #endif

 /*
  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
  * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
  * in between its arguments.  __CONCAT can also concatenate double-quoted
  * strings produced by the __STRING macro, but this only works with ANSI C.
  */

 #define	___STRING(x)	__STRING(x)
 #define	___CONCAT(x,y)	__CONCAT(x,y)

 #if defined(__STDC__) || defined(__cplusplus)
 #define	__P(protos)	protos		/* full-blown ANSI C */
 #define	__CONCAT(x,y)	x ## y
 #define	__STRING(x)	#x

 #define	__const		const		/* define reserved names to standard */
 #define	__signed	signed
 #define	__volatile	volatile
 #if defined(__cplusplus)
 #define	__inline	inline		/* convert to C++ keyword */
 #else
 #if !defined(__GNUC__) && !defined(__lint__)
 #define	__inline			/* delete GCC keyword */
 #endif /* !__GNUC__  && !__lint__ */
 #endif /* !__cplusplus */

 #else	/* !(__STDC__ || __cplusplus) */
 #define	__P(protos)	()		/* traditional C preprocessor */
 #define	__CONCAT(x,y)	x/**/y
 #define	__STRING(x)	"x"

 #ifndef __GNUC__
 #define	__const				/* delete pseudo-ANSI C keywords */
 #define	__inline
 #define	__signed
 #define	__volatile
 #endif	/* !__GNUC__ */

 #endif	/* !(__STDC__ || __cplusplus) */

 /*
  * The following macro is used to remove const cast-away warnings
  * from gcc -Wcast-qual; it should be used with caution because it
  * can hide valid errors; in particular most valid uses are in
  * situations where the API requires it, not to cast away string
  * constants. We don't use *intptr_t on purpose here and we are
  * explicit about unsigned long so that we don't have additional
  * dependencies.
  */
 #define __UNCONST(a)	((void *)(unsigned long)(const void *)(a))

 #define __dead __attribute__((__noreturn__))
 #define __pure __attribute__((__const__))
 #define __pure2 __attribute__((__const__)) /* Android-added: used by FreeBSD libm */

 #define	__unused	__attribute__((__unused__))

 #define	__used		__attribute__((__used__))

 #define	__packed	__attribute__((__packed__))
 #define	__aligned(x)	__attribute__((__aligned__(x)))
 #define	__section(x)	__attribute__((__section__(x)))

 #define __statement(x)	__extension__(x)

 #define __nonnull(args) __attribute__((__nonnull__ args))

 #define __printflike(x, y) __attribute__((__format__(printf, x, y))) __nonnull((x))
 #define __scanflike(x, y) __attribute__((__format__(scanf, x, y))) __nonnull((x))

 /*
  * C99 defines the restrict type qualifier keyword.
  */
 #if defined(__STDC__VERSION__) && __STDC_VERSION__ >= 199901L
 #define	__restrict	restrict
 #endif

 /*
  * C99 defines __func__ predefined identifier.
  */
 #if !defined(__STDC_VERSION__) || !(__STDC_VERSION__ >= 199901L)
 #define	__func__	__PRETTY_FUNCTION__
 #endif /* !(__STDC_VERSION__ >= 199901L) */

 /*
  * GNU C version 2.96 adds explicit branch prediction so that
  * the CPU back-end can hint the processor and also so that
  * code blocks can be reordered such that the predicted path
  * sees a more linear flow, thus improving cache behavior, etc.
  *
  * The following two macros provide us with a way to use this
  * compiler feature.  Use __predict_true() if you expect the expression
  * to evaluate to true, and __predict_false() if you expect the
  * expression to evaluate to false.
  *
  * A few notes about usage:
  *
  *	* Generally, __predict_false() error condition checks (unless
  *	  you have some _strong_ reason to do otherwise, in which case
  *	  document it), and/or __predict_true() `no-error' condition
  *	  checks, assuming you want to optimize for the no-error case.
  *
  *	* Other than that, if you don't know the likelihood of a test
  *	  succeeding from empirical or other `hard' evidence, don't
  *	  make predictions.
  *
  *	* These are meant to be used in places that are run `a lot'.
  *	  It is wasteful to make predictions in code that is run
  *	  seldomly (e.g. at subsystem initialization time) as the
  *	  basic block reordering that this affects can often generate
  *	  larger code.
  */
 #define	__predict_true(exp)	__builtin_expect((exp) != 0, 1)
 #define	__predict_false(exp)	__builtin_expect((exp) != 0, 0)

 #define __noreturn    __attribute__((__noreturn__))
 #define __mallocfunc  __attribute__((malloc))
 #define __purefunc    __attribute__((pure))

 #define __always_inline __attribute__((__always_inline__))

 #define __wur __attribute__((__warn_unused_result__))

 #define __errorattr(msg) __attribute__((__error__(msg)))
 #define __warnattr(msg) __attribute__((__warning__(msg)))

 #define __errordecl(name, msg) extern void name(void) __errorattr(msg)

 /*
  * Some BSD source needs these macros.
  * Originally they embedded the rcs versions of each source file
  * in the generated binary. We strip strings during build anyway,.
  */
 #define __IDSTRING(_prefix,_s) /* nothing */
 #define __COPYRIGHT(_s) /* nothing */
 #define __FBSDID(_s) /* nothing */
 #define __RCSID(_s) /* nothing */
 #define __SCCSID(_s) /* nothing */

 /*
  * _BSD_SOURCE and _GNU_SOURCE are expected to be defined by callers before
  * any standard header file is included. In those header files we test
  * against __USE_BSD and __USE_GNU. glibc does this in <features.h> but we
  * do it in <sys/cdefs.h> instead because that's where our existing
  * _POSIX_C_SOURCE tests were, and we're already confident that <sys/cdefs.h>
  * is included everywhere it should be.
  *
  * The _GNU_SOURCE test needs to come before any _BSD_SOURCE or _POSIX* tests
  * because _GNU_SOURCE implies everything else.
  */
 #if defined(_GNU_SOURCE)
 # define __USE_GNU 1
 # undef _POSIX_SOURCE
 # define _POSIX_SOURCE 1
 # undef _POSIX_C_SOURCE
 # define _POSIX_C_SOURCE 200809L
 # undef _BSD_SOURCE
 # define _BSD_SOURCE 1
 #endif

 #if defined(_BSD_SOURCE)
 # define __USE_BSD 1
 #endif

 /*
  * _FILE_OFFSET_BITS 64 support.
  */
 #if !defined(__LP64__) && defined(_FILE_OFFSET_BITS)
 #if _FILE_OFFSET_BITS == 64
 #define __USE_FILE_OFFSET64 1
 #endif
 #endif

 /*-
  * POSIX.1 requires that the macros we test be defined before any standard
  * header file is included.
  *
  * Here's a quick run-down of the versions:
  *  defined(_POSIX_SOURCE)		1003.1-1988
  *  _POSIX_C_SOURCE == 1		1003.1-1990
  *  _POSIX_C_SOURCE == 2		1003.2-1992 C Language Binding Option
  *  _POSIX_C_SOURCE == 199309		1003.1b-1993
  *  _POSIX_C_SOURCE == 199506		1003.1c-1995, 1003.1i-1995,
  *					and the omnibus ISO/IEC 9945-1: 1996
  *  _POSIX_C_SOURCE == 200112		1003.1-2001
  *  _POSIX_C_SOURCE == 200809		1003.1-2008
  *
  * In addition, the X/Open Portability Guide, which is now the Single UNIX
  * Specification, defines a feature-test macro which indicates the version of
  * that specification, and which subsumes _POSIX_C_SOURCE.
  *
  * Our macros begin with two underscores to avoid namespace screwage.
  */

 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */
 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1
 #undef _POSIX_C_SOURCE		/* Probably illegal, but beyond caring now. */
 #define	_POSIX_C_SOURCE		199009
 #endif

 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */
 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2
 #undef _POSIX_C_SOURCE
 #define	_POSIX_C_SOURCE		199209
 #endif

 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */
 #ifdef _XOPEN_SOURCE
 #if _XOPEN_SOURCE - 0 >= 700
 #define	__XSI_VISIBLE		700
 #undef _POSIX_C_SOURCE
 #define	_POSIX_C_SOURCE		200809
 #elif _XOPEN_SOURCE - 0 >= 600
 #define	__XSI_VISIBLE		600
 #undef _POSIX_C_SOURCE
 #define	_POSIX_C_SOURCE		200112
 #elif _XOPEN_SOURCE - 0 >= 500
 #define	__XSI_VISIBLE		500
 #undef _POSIX_C_SOURCE
 #define	_POSIX_C_SOURCE		199506
 #endif
 #endif

 /*
  * Deal with all versions of POSIX.  The ordering relative to the tests above is
  * important.
  */
 #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
 #define	_POSIX_C_SOURCE		198808
 #endif
 #ifdef _POSIX_C_SOURCE
 #if _POSIX_C_SOURCE >= 200809
 #define	__POSIX_VISIBLE		200809
 #define	__ISO_C_VISIBLE		1999
 #elif _POSIX_C_SOURCE >= 200112
 #define	__POSIX_VISIBLE		200112
 #define	__ISO_C_VISIBLE		1999
 #elif _POSIX_C_SOURCE >= 199506
 #define	__POSIX_VISIBLE		199506
 #define	__ISO_C_VISIBLE		1990
 #elif _POSIX_C_SOURCE >= 199309
 #define	__POSIX_VISIBLE		199309
 #define	__ISO_C_VISIBLE		1990
 #elif _POSIX_C_SOURCE >= 199209
 #define	__POSIX_VISIBLE		199209
 #define	__ISO_C_VISIBLE		1990
 #elif _POSIX_C_SOURCE >= 199009
 #define	__POSIX_VISIBLE		199009
 #define	__ISO_C_VISIBLE		1990
 #else
 #define	__POSIX_VISIBLE		198808
 #define	__ISO_C_VISIBLE		0
 #endif /* _POSIX_C_SOURCE */
 #else
 /*-
  * Deal with _ANSI_SOURCE:
  * If it is defined, and no other compilation environment is explicitly
  * requested, then define our internal feature-test macros to zero.  This
  * makes no difference to the preprocessor (undefined symbols in preprocessing
  * expressions are defined to have value zero), but makes it more convenient for
  * a test program to print out the values.
  *
  * If a program mistakenly defines _ANSI_SOURCE and some other macro such as
  * _POSIX_C_SOURCE, we will assume that it wants the broader compilation
  * environment (and in fact we will never get here).
  */
 #if defined(_ANSI_SOURCE)	/* Hide almost everything. */
 #define	__POSIX_VISIBLE		0
 #define	__XSI_VISIBLE		0
 #define	__BSD_VISIBLE		0
 #define	__ISO_C_VISIBLE		1990
 #elif defined(_C99_SOURCE)	/* Localism to specify strict C99 env. */
 #define	__POSIX_VISIBLE		0
 #define	__XSI_VISIBLE		0
 #define	__BSD_VISIBLE		0
 #define	__ISO_C_VISIBLE		1999
 #else				/* Default environment: show everything. */
 #define	__POSIX_VISIBLE		200809
 #define	__XSI_VISIBLE		700
 #define	__BSD_VISIBLE		1
 #define	__ISO_C_VISIBLE		1999
 #endif
 #endif

 /*
  * Default values.
  */
 #ifndef __XPG_VISIBLE
 # define __XPG_VISIBLE          700
 #endif
 #ifndef __POSIX_VISIBLE
 # define __POSIX_VISIBLE        200809
 #endif
 #ifndef __ISO_C_VISIBLE
 # define __ISO_C_VISIBLE        1999
 #endif
 #ifndef __BSD_VISIBLE
 # define __BSD_VISIBLE          1
 #endif

 #define  __BIONIC__   1
 #include <android/api-level.h>

 /* glibc compatibility. */
 #if __POSIX_VISIBLE >= 200809
 #define __USE_ISOC99 1
 #define __USE_XOPEN2K 1
 #define __USE_XOPEN2K8 1
 #endif
 #if __LP64__
 #define __WORDSIZE 64
 #else
 #define __WORDSIZE 32
 #endif

 /*
  * When _FORTIFY_SOURCE is defined, automatic bounds checking is
  * added to commonly used libc functions. If a buffer overrun is
  * detected, the program is safely aborted.
  *
  * See
  * http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html for details.
  */
 #if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
 #  define __BIONIC_FORTIFY 1
 #  if _FORTIFY_SOURCE == 2
 #    define __bos(s) __builtin_object_size((s), 1)
 #  else
 #    define __bos(s) __builtin_object_size((s), 0)
 #  endif
 #  define __bos0(s) __builtin_object_size((s), 0)
 #  define __BIONIC_FORTIFY_INLINE extern __inline__ __always_inline __attribute__((gnu_inline)) __attribute__((__artificial__))
 #endif
 #define __BIONIC_FORTIFY_UNKNOWN_SIZE ((size_t) -1)

 /* Used to tag non-static symbols that are private and never exposed by the shared library. */
 #define __LIBC_HIDDEN__ __attribute__((visibility("hidden")))

 /* Like __LIBC_HIDDEN__, but preserves binary compatibility for LP32. */
 #ifdef __LP64__
 #define __LIBC32_LEGACY_PUBLIC__ __LIBC_HIDDEN__
 #else
 #define __LIBC32_LEGACY_PUBLIC__ __LIBC_ABI_PUBLIC__
 #endif

 /* Used to tag non-static symbols that are public and exposed by the shared library. */
 #define __LIBC_ABI_PUBLIC__ __attribute__((visibility ("default")))

 /* Used to rename functions so that the compiler emits a call to 'x' rather than the function this was applied to. */
 #define __RENAME(x) __asm__(#x)

 #if __ANDROID_API__ < 21
 #define __BIONIC_LEGACY_INLINE static __inline
 #else
 #define __BIONIC_LEGACY_INLINE extern
 #endif

 #ifdef __clang__
 #define __AVAILABILITY(...) __attribute__((availability(android,__VA_ARGS__)))
 #else
 #define __AVAILABILITY(...)
 #endif // __clang__

 #define __INTRODUCED_IN(api_level) __AVAILABILITY(introduced=api_level)
 #define __DEPRECATED_IN(api_level) __AVAILABILITY(deprecated=api_level)
 #define __REMOVED_IN(api_level) __AVAILABILITY(obsoleted=api_level)

 #define __INTRODUCED_IN_FUTURE __INTRODUCED_IN(10000)

 #if __LP64__
 #define __INTRODUCED_IN_32(api_level)
 #define __INTRODUCED_IN_64 __INTRODUCED_IN
 #else
 #define __INTRODUCED_IN_32 __INTRODUCED_IN
 #define __INTRODUCED_IN_64(api_level)
 #endif

 #if __has_builtin(__builtin_umul_overflow) || __GNUC__ >= 5
 #if __LP64__
 #define __size_mul_overflow(a, b, result) __builtin_umull_overflow(a, b, result)
 #else
 #define __size_mul_overflow(a, b, result) __builtin_umul_overflow(a, b, result)
 #endif
 #else
 extern __inline__ __always_inline __attribute__((gnu_inline))
 int __size_mul_overflow(__SIZE_TYPE__ a, __SIZE_TYPE__ b, __SIZE_TYPE__ *result) {
     *result = a * b;
     static const __SIZE_TYPE__ mul_no_overflow = 1UL << (sizeof(__SIZE_TYPE__) * 4);
     return (a >= mul_no_overflow || b >= mul_no_overflow) && a > 0 && (__SIZE_TYPE__)-1 / a < b;
 }
 #endif

 #endif /* !_SYS_CDEFS_H_ */
	/* $NetBSD: cdefs.h,v 1.58 2004/12/11 05:59:00 christos Exp $ */

	/*
	* Copyright (c) 1991, 1993
	* The Regents of the University of California. All rights reserved.
	*
	* This code is derived from software contributed to Berkeley by
	* Berkeley Software Design, Inc.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. Neither the name of the University nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*
	* @(#)cdefs.h 8.8 (Berkeley) 1/9/95
	*/

	#ifndef _SYS_CDEFS_H_
	#define _SYS_CDEFS_H_

	/*
	* Testing against Clang-specific extensions.
	*/

	#ifndef __has_extension
	#define __has_extension __has_feature
	#endif
	#ifndef __has_feature
	#define __has_feature(x) 0
	#endif
	#ifndef __has_include
	#define __has_include(x) 0
	#endif
	#ifndef __has_builtin
	#define __has_builtin(x) 0
	#endif
	#ifndef __has_attribute
	#define __has_attribute(x) 0
	#endif


	/*
	* Macro to test if we're using a GNU C compiler of a specific vintage
	* or later, for e.g. features that appeared in a particular version
	* of GNU C. Usage:
	*
	* #if __GNUC_PREREQ(major, minor)
	* ...cool feature...
	* #else
	* ...delete feature...
	* #endif
	*/
	#ifdef __GNUC__
	#define __GNUC_PREREQ(x, y) \
	((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) \|\| \
	(__GNUC__ > (x)))
	#else
	#define __GNUC_PREREQ(x, y) 0
	#endif

	#define __strong_alias(alias, sym) \
	__asm__(".global " #alias "\n" \
	#alias " = " #sym);

	#if defined(__cplusplus)
	#define __BEGIN_DECLS extern "C" {
	#define __END_DECLS }
	#define __static_cast(x,y) static_cast<x>(y)
	#else
	#define __BEGIN_DECLS
	#define __END_DECLS
	#define __static_cast(x,y) (x)y
	#endif

	/*
	* The __CONCAT macro is used to concatenate parts of symbol names, e.g.
	* with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
	* The __CONCAT macro is a bit tricky -- make sure you don't put spaces
	* in between its arguments. __CONCAT can also concatenate double-quoted
	* strings produced by the __STRING macro, but this only works with ANSI C.
	*/

	#define ___STRING(x) __STRING(x)
	#define ___CONCAT(x,y) __CONCAT(x,y)

	#if defined(__STDC__) \|\| defined(__cplusplus)
	#define __P(protos) protos /* full-blown ANSI C */
	#define __CONCAT(x,y) x ## y
	#define __STRING(x) #x

	#define __const const /* define reserved names to standard */
	#define __signed signed
	#define __volatile volatile
	#if defined(__cplusplus)
	#define __inline inline /* convert to C++ keyword */
	#else
	#if !defined(__GNUC__) && !defined(__lint__)
	#define __inline /* delete GCC keyword */
	#endif /* !__GNUC__ && !__lint__ */
	#endif /* !__cplusplus */

	#else /* !(__STDC__ \|\| __cplusplus) */
	#define __P(protos) () /* traditional C preprocessor */
	#define __CONCAT(x,y) x/**/y
	#define __STRING(x) "x"

	#ifndef __GNUC__
	#define __const /* delete pseudo-ANSI C keywords */
	#define __inline
	#define __signed
	#define __volatile
	#endif /* !__GNUC__ */

	#endif /* !(__STDC__ \|\| __cplusplus) */

	/*
	* The following macro is used to remove const cast-away warnings
	* from gcc -Wcast-qual; it should be used with caution because it
	* can hide valid errors; in particular most valid uses are in
	* situations where the API requires it, not to cast away string
	* constants. We don't use *intptr_t on purpose here and we are
	* explicit about unsigned long so that we don't have additional
	* dependencies.
	*/
	#define __UNCONST(a) ((void )(unsigned long)(const void )(a))

	#define __dead __attribute__((__noreturn__))
	#define __pure __attribute__((__const__))
	#define __pure2 __attribute__((__const__)) /* Android-added: used by FreeBSD libm */

	#define __unused __attribute__((__unused__))

	#define __used __attribute__((__used__))

	#define __packed __attribute__((__packed__))
	#define __aligned(x) __attribute__((__aligned__(x)))
	#define __section(x) __attribute__((__section__(x)))

	#define __statement(x) __extension__(x)

	#define __nonnull(args) __attribute__((__nonnull__ args))

	#define __printflike(x, y) __attribute__((__format__(printf, x, y))) __nonnull((x))
	#define __scanflike(x, y) __attribute__((__format__(scanf, x, y))) __nonnull((x))

	/*
	* C99 defines the restrict type qualifier keyword.
	*/
	#if defined(__STDC__VERSION__) && __STDC_VERSION__ >= 199901L
	#define __restrict restrict
	#endif

	/*
	* C99 defines __func__ predefined identifier.
	*/
	#if !defined(__STDC_VERSION__) \|\| !(__STDC_VERSION__ >= 199901L)
	#define __func__ __PRETTY_FUNCTION__
	#endif /* !(__STDC_VERSION__ >= 199901L) */

	/*
	* GNU C version 2.96 adds explicit branch prediction so that
	* the CPU back-end can hint the processor and also so that
	* code blocks can be reordered such that the predicted path
	* sees a more linear flow, thus improving cache behavior, etc.
	*
	* The following two macros provide us with a way to use this
	* compiler feature. Use __predict_true() if you expect the expression
	* to evaluate to true, and __predict_false() if you expect the
	* expression to evaluate to false.
	*
	* A few notes about usage:
	*
	* * Generally, __predict_false() error condition checks (unless
	* you have some _strong_ reason to do otherwise, in which case
	* document it), and/or __predict_true() `no-error' condition
	* checks, assuming you want to optimize for the no-error case.
	*
	* * Other than that, if you don't know the likelihood of a test
	* succeeding from empirical or other `hard' evidence, don't
	* make predictions.
	*
	* * These are meant to be used in places that are run `a lot'.
	* It is wasteful to make predictions in code that is run
	* seldomly (e.g. at subsystem initialization time) as the
	* basic block reordering that this affects can often generate
	* larger code.
	*/
	#define __predict_true(exp) __builtin_expect((exp) != 0, 1)
	#define __predict_false(exp) __builtin_expect((exp) != 0, 0)

	#define __noreturn __attribute__((__noreturn__))
	#define __mallocfunc __attribute__((malloc))
	#define __purefunc __attribute__((pure))

	#define __always_inline __attribute__((__always_inline__))

	#define __wur __attribute__((__warn_unused_result__))

	#define __errorattr(msg) __attribute__((__error__(msg)))
	#define __warnattr(msg) __attribute__((__warning__(msg)))

	#define __errordecl(name, msg) extern void name(void) __errorattr(msg)

	/*
	* Some BSD source needs these macros.
	* Originally they embedded the rcs versions of each source file
	* in the generated binary. We strip strings during build anyway,.
	*/
	#define __IDSTRING(_prefix,_s) /* nothing */
	#define __COPYRIGHT(_s) /* nothing */
	#define __FBSDID(_s) /* nothing */
	#define __RCSID(_s) /* nothing */
	#define __SCCSID(_s) /* nothing */

	/*
	* _BSD_SOURCE and _GNU_SOURCE are expected to be defined by callers before
	* any standard header file is included. In those header files we test
	* against __USE_BSD and __USE_GNU. glibc does this in <features.h> but we
	* do it in <sys/cdefs.h> instead because that's where our existing
	* _POSIX_C_SOURCE tests were, and we're already confident that <sys/cdefs.h>
	* is included everywhere it should be.
	*
	* The _GNU_SOURCE test needs to come before any _BSD_SOURCE or _POSIX* tests
	* because _GNU_SOURCE implies everything else.
	*/
	#if defined(_GNU_SOURCE)
	# define __USE_GNU 1
	# undef _POSIX_SOURCE
	# define _POSIX_SOURCE 1
	# undef _POSIX_C_SOURCE
	# define _POSIX_C_SOURCE 200809L
	# undef _BSD_SOURCE
	# define _BSD_SOURCE 1
	#endif

	#if defined(_BSD_SOURCE)
	# define __USE_BSD 1
	#endif

	/*
	* _FILE_OFFSET_BITS 64 support.
	*/
	#if !defined(__LP64__) && defined(_FILE_OFFSET_BITS)
	#if _FILE_OFFSET_BITS == 64
	#define __USE_FILE_OFFSET64 1
	#endif
	#endif

	/*-
	* POSIX.1 requires that the macros we test be defined before any standard
	* header file is included.
	*
	* Here's a quick run-down of the versions:
	* defined(_POSIX_SOURCE) 1003.1-1988
	* _POSIX_C_SOURCE == 1 1003.1-1990
	* _POSIX_C_SOURCE == 2 1003.2-1992 C Language Binding Option
	* _POSIX_C_SOURCE == 199309 1003.1b-1993
	* _POSIX_C_SOURCE == 199506 1003.1c-1995, 1003.1i-1995,
	* and the omnibus ISO/IEC 9945-1: 1996
	* _POSIX_C_SOURCE == 200112 1003.1-2001
	* _POSIX_C_SOURCE == 200809 1003.1-2008
	*
	* In addition, the X/Open Portability Guide, which is now the Single UNIX
	* Specification, defines a feature-test macro which indicates the version of
	* that specification, and which subsumes _POSIX_C_SOURCE.
	*
	* Our macros begin with two underscores to avoid namespace screwage.
	*/

	/* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */
	#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1
	#undef _POSIX_C_SOURCE /* Probably illegal, but beyond caring now. */
	#define _POSIX_C_SOURCE 199009
	#endif

	/* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */
	#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2
	#undef _POSIX_C_SOURCE
	#define _POSIX_C_SOURCE 199209
	#endif

	/* Deal with various X/Open Portability Guides and Single UNIX Spec. */
	#ifdef _XOPEN_SOURCE
	#if _XOPEN_SOURCE - 0 >= 700
	#define __XSI_VISIBLE 700
	#undef _POSIX_C_SOURCE
	#define _POSIX_C_SOURCE 200809
	#elif _XOPEN_SOURCE - 0 >= 600
	#define __XSI_VISIBLE 600
	#undef _POSIX_C_SOURCE
	#define _POSIX_C_SOURCE 200112
	#elif _XOPEN_SOURCE - 0 >= 500
	#define __XSI_VISIBLE 500
	#undef _POSIX_C_SOURCE
	#define _POSIX_C_SOURCE 199506
	#endif
	#endif

	/*
	* Deal with all versions of POSIX. The ordering relative to the tests above is
	* important.
	*/
	#if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
	#define _POSIX_C_SOURCE 198808
	#endif
	#ifdef _POSIX_C_SOURCE
	#if _POSIX_C_SOURCE >= 200809
	#define __POSIX_VISIBLE 200809
	#define __ISO_C_VISIBLE 1999
	#elif _POSIX_C_SOURCE >= 200112
	#define __POSIX_VISIBLE 200112
	#define __ISO_C_VISIBLE 1999
	#elif _POSIX_C_SOURCE >= 199506
	#define __POSIX_VISIBLE 199506
	#define __ISO_C_VISIBLE 1990
	#elif _POSIX_C_SOURCE >= 199309
	#define __POSIX_VISIBLE 199309
	#define __ISO_C_VISIBLE 1990
	#elif _POSIX_C_SOURCE >= 199209
	#define __POSIX_VISIBLE 199209
	#define __ISO_C_VISIBLE 1990
	#elif _POSIX_C_SOURCE >= 199009
	#define __POSIX_VISIBLE 199009
	#define __ISO_C_VISIBLE 1990
	#else
	#define __POSIX_VISIBLE 198808
	#define __ISO_C_VISIBLE 0
	#endif /* _POSIX_C_SOURCE */
	#else
	/*-
	* Deal with _ANSI_SOURCE:
	* If it is defined, and no other compilation environment is explicitly
	* requested, then define our internal feature-test macros to zero. This
	* makes no difference to the preprocessor (undefined symbols in preprocessing
	* expressions are defined to have value zero), but makes it more convenient for
	* a test program to print out the values.
	*
	* If a program mistakenly defines _ANSI_SOURCE and some other macro such as
	* _POSIX_C_SOURCE, we will assume that it wants the broader compilation
	* environment (and in fact we will never get here).
	*/
	#if defined(_ANSI_SOURCE) /* Hide almost everything. */
	#define __POSIX_VISIBLE 0
	#define __XSI_VISIBLE 0
	#define __BSD_VISIBLE 0
	#define __ISO_C_VISIBLE 1990
	#elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */
	#define __POSIX_VISIBLE 0
	#define __XSI_VISIBLE 0
	#define __BSD_VISIBLE 0
	#define __ISO_C_VISIBLE 1999
	#else /* Default environment: show everything. */
	#define __POSIX_VISIBLE 200809
	#define __XSI_VISIBLE 700
	#define __BSD_VISIBLE 1
	#define __ISO_C_VISIBLE 1999
	#endif
	#endif

	/*
	* Default values.
	*/
	#ifndef __XPG_VISIBLE
	# define __XPG_VISIBLE 700
	#endif
	#ifndef __POSIX_VISIBLE
	# define __POSIX_VISIBLE 200809
	#endif
	#ifndef __ISO_C_VISIBLE
	# define __ISO_C_VISIBLE 1999
	#endif
	#ifndef __BSD_VISIBLE
	# define __BSD_VISIBLE 1
	#endif

	#define __BIONIC__ 1
	#include <android/api-level.h>

	/* glibc compatibility. */
	#if __POSIX_VISIBLE >= 200809
	#define __USE_ISOC99 1
	#define __USE_XOPEN2K 1
	#define __USE_XOPEN2K8 1
	#endif
	#if __LP64__
	#define __WORDSIZE 64
	#else
	#define __WORDSIZE 32
	#endif

	/*
	* When _FORTIFY_SOURCE is defined, automatic bounds checking is
	* added to commonly used libc functions. If a buffer overrun is
	* detected, the program is safely aborted.
	*
	* See
	* http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html for details.
	*/
	#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
	# define __BIONIC_FORTIFY 1
	# if _FORTIFY_SOURCE == 2
	# define __bos(s) __builtin_object_size((s), 1)
	# else
	# define __bos(s) __builtin_object_size((s), 0)
	# endif
	# define __bos0(s) __builtin_object_size((s), 0)
	# define __BIONIC_FORTIFY_INLINE extern __inline__ __always_inline __attribute__((gnu_inline)) __attribute__((__artificial__))
	#endif
	#define __BIONIC_FORTIFY_UNKNOWN_SIZE ((size_t) -1)

	/* Used to tag non-static symbols that are private and never exposed by the shared library. */
	#define __LIBC_HIDDEN__ __attribute__((visibility("hidden")))

	/* Like __LIBC_HIDDEN__, but preserves binary compatibility for LP32. */
	#ifdef __LP64__
	#define __LIBC32_LEGACY_PUBLIC__ __LIBC_HIDDEN__
	#else
	#define __LIBC32_LEGACY_PUBLIC__ __LIBC_ABI_PUBLIC__
	#endif

	/* Used to tag non-static symbols that are public and exposed by the shared library. */
	#define __LIBC_ABI_PUBLIC__ __attribute__((visibility ("default")))

	/* Used to rename functions so that the compiler emits a call to 'x' rather than the function this was applied to. */
	#define __RENAME(x) __asm__(#x)

	#if __ANDROID_API__ < 21
	#define __BIONIC_LEGACY_INLINE static __inline
	#else
	#define __BIONIC_LEGACY_INLINE extern
	#endif

	#ifdef __clang__
	#define __AVAILABILITY(...) __attribute__((availability(android,__VA_ARGS__)))
	#else
	#define __AVAILABILITY(...)
	#endif // __clang__

	#define __INTRODUCED_IN(api_level) __AVAILABILITY(introduced=api_level)
	#define __DEPRECATED_IN(api_level) __AVAILABILITY(deprecated=api_level)
	#define __REMOVED_IN(api_level) __AVAILABILITY(obsoleted=api_level)

	#define __INTRODUCED_IN_FUTURE __INTRODUCED_IN(10000)

	#if __LP64__
	#define __INTRODUCED_IN_32(api_level)
	#define __INTRODUCED_IN_64 __INTRODUCED_IN
	#else
	#define __INTRODUCED_IN_32 __INTRODUCED_IN
	#define __INTRODUCED_IN_64(api_level)
	#endif

	#if __has_builtin(__builtin_umul_overflow) \|\| __GNUC__ >= 5
	#if __LP64__
	#define __size_mul_overflow(a, b, result) __builtin_umull_overflow(a, b, result)
	#else
	#define __size_mul_overflow(a, b, result) __builtin_umul_overflow(a, b, result)
	#endif
	#else
	extern __inline__ __always_inline __attribute__((gnu_inline))
	int __size_mul_overflow(__SIZE_TYPE__ a, __SIZE_TYPE__ b, __SIZE_TYPE__ *result) {
	result = a b;
	static const __SIZE_TYPE__ mul_no_overflow = 1UL << (sizeof(__SIZE_TYPE__) * 4);
	return (a >= mul_no_overflow \|\| b >= mul_no_overflow) && a > 0 && (__SIZE_TYPE__)-1 / a < b;
	}
	#endif

	#endif /* !_SYS_CDEFS_H_ */