mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 01:21:06 +00:00
0acb8a2a85
Information about whether the ABI of long double is the same as that of double is split between bits/mathdef.h and bits/wordsize.h. When the ABIs are the same, bits/mathdef.h defines __NO_LONG_DOUBLE_MATH. In addition, in the case where the same glibc binary supports both -mlong-double-64 and -mlong-double-128, bits/wordsize.h defines __LONG_DOUBLE_MATH_OPTIONAL, along with __NO_LONG_DOUBLE_MATH if this particular compilation is with -mlong-double-64. As part of the refactoring I proposed in <https://sourceware.org/ml/libc-alpha/2016-11/msg00745.html>, this patch puts all that information in a single header, bits/long-double.h. It is included from sys/cdefs.h alongside the include of bits/wordsize.h, so other headers generally do not need to include bits/long-double.h directly. Previously, various bits/mathdef.h headers and bits/wordsize.h headers had this long double information (including implicitly in some bits/mathdef.h headers through not having the defines present in the default version). After the patch, it's all in six bits/long-double.h headers. Furthermore, most of those new headers are not architecture-specific. Architectures with optional long double all use the ldbl-opt sysdeps directory, either in the order (ldbl-64-128, ldbl-opt, ldbl-128) or (ldbl-128ibm, ldbl-opt). Thus a generic header for the case where long double = double, and headers in ldbl-128, ldbl-96 and ldbl-opt, suffices to cover every architecture except for cases where long double properties vary between different ABIs sharing a set of installed headers; fortunately all the ldbl-opt cases share a single compiler-predefined macro __LONG_DOUBLE_128__ that can be used to tell whether this compilation is -mlong-double-64 or -mlong-double-128. The two cases where a set of headers is shared between ABIs with different long double properties, MIPS (o32 has long double = double, other ABIs use ldbl-128) and SPARC (32-bit has optional long double, 64-bit has required long double), need their own bits/long-double.h headers. As with bits/wordsize.h, multiple-include protection for this header is generally implicit through the include guards on sys/cdefs.h, and multiple inclusion is harmless in any case. There is one subtlety: the header must not define __LONG_DOUBLE_MATH_OPTIONAL if __NO_LONG_DOUBLE_MATH was defined before its inclusion, because doing so breaks how sysdeps/ieee754/ldbl-opt/nldbl-compat.h defines __NO_LONG_DOUBLE_MATH itself before including system headers. Subject to keeping that working, it would be reasonable to move these macros from defined/undefined #ifdef to always-defined 1/0 #if semantics, but this patch does not attempt to do so, just rearranges where the macros are defined. After this patch, the only use of bits/mathdef.h is the alpha one for modifying complex function ABIs for old GCC. Thus, all versions of the header other than the default and alpha versions are removed, as is the include from math.h. Tested for x86_64 and x86. Also did compilation-only testing with build-many-glibcs.py. * bits/long-double.h: New file. * sysdeps/ieee754/ldbl-128/bits/long-double.h: Likewise. * sysdeps/ieee754/ldbl-96/bits/long-double.h: Likewise. * sysdeps/ieee754/ldbl-opt/bits/long-double.h: Likewise. * sysdeps/mips/bits/long-double.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/long-double.h: Likewise. * math/Makefile (headers): Add bits/long-double.h. * misc/sys/cdefs.h: Include <bits/long-double.h>. * stdlib/strtold.c: Include <bits/long-double.h> instead of <bits/wordsize.h>. * bits/mathdef.h [!_COMPLEX_H]: Do not allow inclusion. [!__NO_LONG_DOUBLE_MATH]: Remove conditional code. * math/math.h: Do not include <bits/mathdef.h>. * sysdeps/aarch64/bits/mathdef.h: Remove file. * sysdeps/alpha/bits/mathdef.h [!_COMPLEX_H]: Do not allow inclusion. * sysdeps/ia64/bits/mathdef.h: Remove file. * sysdeps/m68k/m680x0/bits/mathdef.h: Likewise. * sysdeps/mips/bits/mathdef.h: Likewise. * sysdeps/powerpc/bits/mathdef.h: Likewise. * sysdeps/s390/bits/mathdef.h: Likewise. * sysdeps/sparc/bits/mathdef.h: Likewise. * sysdeps/x86/bits/mathdef.h: Likewise. * sysdeps/s390/s390-32/bits/wordsize.h [!__NO_LONG_DOUBLE_MATH && !__LONG_DOUBLE_MATH_OPTIONAL]: Remove conditional code. * sysdeps/s390/s390-64/bits/wordsize.h [!__NO_LONG_DOUBLE_MATH && !__LONG_DOUBLE_MATH_OPTIONAL]: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/wordsize.h [!__NO_LONG_DOUBLE_MATH && !__LONG_DOUBLE_MATH_OPTIONAL]: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/wordsize.h [!__NO_LONG_DOUBLE_MATH && !__LONG_DOUBLE_MATH_OPTIONAL]: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/wordsize.h [!__NO_LONG_DOUBLE_MATH && !__LONG_DOUBLE_MATH_OPTIONAL]: Likewise.
490 lines
17 KiB
C++
490 lines
17 KiB
C++
/* Copyright (C) 1992-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library 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.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SYS_CDEFS_H
|
|
#define _SYS_CDEFS_H 1
|
|
|
|
/* We are almost always included from features.h. */
|
|
#ifndef _FEATURES_H
|
|
# include <features.h>
|
|
#endif
|
|
|
|
/* The GNU libc does not support any K&R compilers or the traditional mode
|
|
of ISO C compilers anymore. Check for some of the combinations not
|
|
anymore supported. */
|
|
#if defined __GNUC__ && !defined __STDC__
|
|
# error "You need a ISO C conforming compiler to use the glibc headers"
|
|
#endif
|
|
|
|
/* Some user header file might have defined this before. */
|
|
#undef __P
|
|
#undef __PMT
|
|
|
|
#ifdef __GNUC__
|
|
|
|
/* All functions, except those with callbacks or those that
|
|
synchronize memory, are leaf functions. */
|
|
# if __GNUC_PREREQ (4, 6) && !defined _LIBC
|
|
# define __LEAF , __leaf__
|
|
# define __LEAF_ATTR __attribute__ ((__leaf__))
|
|
# else
|
|
# define __LEAF
|
|
# define __LEAF_ATTR
|
|
# endif
|
|
|
|
/* GCC can always grok prototypes. For C++ programs we add throw()
|
|
to help it optimize the function calls. But this works only with
|
|
gcc 2.8.x and egcs. For gcc 3.2 and up we even mark C functions
|
|
as non-throwing using a function attribute since programs can use
|
|
the -fexceptions options for C code as well. */
|
|
# if !defined __cplusplus && __GNUC_PREREQ (3, 3)
|
|
# define __THROW __attribute__ ((__nothrow__ __LEAF))
|
|
# define __THROWNL __attribute__ ((__nothrow__))
|
|
# define __NTH(fct) __attribute__ ((__nothrow__ __LEAF)) fct
|
|
# else
|
|
# if defined __cplusplus && __GNUC_PREREQ (2,8)
|
|
# define __THROW throw ()
|
|
# define __THROWNL throw ()
|
|
# define __NTH(fct) __LEAF_ATTR fct throw ()
|
|
# else
|
|
# define __THROW
|
|
# define __THROWNL
|
|
# define __NTH(fct) fct
|
|
# endif
|
|
# endif
|
|
|
|
#else /* Not GCC. */
|
|
|
|
# define __inline /* No inline functions. */
|
|
|
|
# define __THROW
|
|
# define __THROWNL
|
|
# define __NTH(fct) fct
|
|
|
|
#endif /* GCC. */
|
|
|
|
/* Compilers that are not clang may object to
|
|
#if defined __clang__ && __has_extension(...)
|
|
even though they do not need to evaluate the right-hand side of the &&. */
|
|
#if defined __clang__ && defined __has_extension
|
|
# define __glibc_clang_has_extension(ext) __has_extension (ext)
|
|
#else
|
|
# define __glibc_clang_has_extension(ext) 0
|
|
#endif
|
|
|
|
/* These two macros are not used in glibc anymore. They are kept here
|
|
only because some other projects expect the macros to be defined. */
|
|
#define __P(args) args
|
|
#define __PMT(args) args
|
|
|
|
/* For these things, GCC behaves the ANSI way normally,
|
|
and the non-ANSI way under -traditional. */
|
|
|
|
#define __CONCAT(x,y) x ## y
|
|
#define __STRING(x) #x
|
|
|
|
/* This is not a typedef so `const __ptr_t' does the right thing. */
|
|
#define __ptr_t void *
|
|
#define __long_double_t long double
|
|
|
|
|
|
/* C++ needs to know that types and declarations are C, not C++. */
|
|
#ifdef __cplusplus
|
|
# define __BEGIN_DECLS extern "C" {
|
|
# define __END_DECLS }
|
|
#else
|
|
# define __BEGIN_DECLS
|
|
# define __END_DECLS
|
|
#endif
|
|
|
|
|
|
/* The standard library needs the functions from the ISO C90 standard
|
|
in the std namespace. At the same time we want to be safe for
|
|
future changes and we include the ISO C99 code in the non-standard
|
|
namespace __c99. The C++ wrapper header take case of adding the
|
|
definitions to the global namespace. */
|
|
#if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES
|
|
# define __BEGIN_NAMESPACE_STD namespace std {
|
|
# define __END_NAMESPACE_STD }
|
|
# define __USING_NAMESPACE_STD(name) using std::name;
|
|
# define __BEGIN_NAMESPACE_C99 namespace __c99 {
|
|
# define __END_NAMESPACE_C99 }
|
|
# define __USING_NAMESPACE_C99(name) using __c99::name;
|
|
#else
|
|
/* For compatibility we do not add the declarations into any
|
|
namespace. They will end up in the global namespace which is what
|
|
old code expects. */
|
|
# define __BEGIN_NAMESPACE_STD
|
|
# define __END_NAMESPACE_STD
|
|
# define __USING_NAMESPACE_STD(name)
|
|
# define __BEGIN_NAMESPACE_C99
|
|
# define __END_NAMESPACE_C99
|
|
# define __USING_NAMESPACE_C99(name)
|
|
#endif
|
|
|
|
|
|
/* Fortify support. */
|
|
#define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
|
|
#define __bos0(ptr) __builtin_object_size (ptr, 0)
|
|
|
|
#if __GNUC_PREREQ (4,3)
|
|
# define __warndecl(name, msg) \
|
|
extern void name (void) __attribute__((__warning__ (msg)))
|
|
# define __warnattr(msg) __attribute__((__warning__ (msg)))
|
|
# define __errordecl(name, msg) \
|
|
extern void name (void) __attribute__((__error__ (msg)))
|
|
#else
|
|
# define __warndecl(name, msg) extern void name (void)
|
|
# define __warnattr(msg)
|
|
# define __errordecl(name, msg) extern void name (void)
|
|
#endif
|
|
|
|
/* Support for flexible arrays.
|
|
Headers that should use flexible arrays only if they're "real"
|
|
(e.g. only if they won't affect sizeof()) should test
|
|
#if __glibc_c99_flexarr_available. */
|
|
#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
|
|
# define __flexarr []
|
|
# define __glibc_c99_flexarr_available 1
|
|
#elif __GNUC_PREREQ (2,97)
|
|
/* GCC 2.97 supports C99 flexible array members as an extension,
|
|
even when in C89 mode or compiling C++ (any version). */
|
|
# define __flexarr []
|
|
# define __glibc_c99_flexarr_available 1
|
|
#elif defined __GNUC__
|
|
/* Pre-2.97 GCC did not support C99 flexible arrays but did have
|
|
an equivalent extension with slightly different notation. */
|
|
# define __flexarr [0]
|
|
# define __glibc_c99_flexarr_available 1
|
|
#else
|
|
/* Some other non-C99 compiler. Approximate with [1]. */
|
|
# define __flexarr [1]
|
|
# define __glibc_c99_flexarr_available 0
|
|
#endif
|
|
|
|
|
|
/* __asm__ ("xyz") is used throughout the headers to rename functions
|
|
at the assembly language level. This is wrapped by the __REDIRECT
|
|
macro, in order to support compilers that can do this some other
|
|
way. When compilers don't support asm-names at all, we have to do
|
|
preprocessor tricks instead (which don't have exactly the right
|
|
semantics, but it's the best we can do).
|
|
|
|
Example:
|
|
int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid); */
|
|
|
|
#if defined __GNUC__ && __GNUC__ >= 2
|
|
|
|
# define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
|
|
# ifdef __cplusplus
|
|
# define __REDIRECT_NTH(name, proto, alias) \
|
|
name proto __THROW __asm__ (__ASMNAME (#alias))
|
|
# define __REDIRECT_NTHNL(name, proto, alias) \
|
|
name proto __THROWNL __asm__ (__ASMNAME (#alias))
|
|
# else
|
|
# define __REDIRECT_NTH(name, proto, alias) \
|
|
name proto __asm__ (__ASMNAME (#alias)) __THROW
|
|
# define __REDIRECT_NTHNL(name, proto, alias) \
|
|
name proto __asm__ (__ASMNAME (#alias)) __THROWNL
|
|
# endif
|
|
# define __ASMNAME(cname) __ASMNAME2 (__USER_LABEL_PREFIX__, cname)
|
|
# define __ASMNAME2(prefix, cname) __STRING (prefix) cname
|
|
|
|
/*
|
|
#elif __SOME_OTHER_COMPILER__
|
|
|
|
# define __REDIRECT(name, proto, alias) name proto; \
|
|
_Pragma("let " #name " = " #alias)
|
|
*/
|
|
#endif
|
|
|
|
/* GCC has various useful declarations that can be made with the
|
|
`__attribute__' syntax. All of the ways we use this do fine if
|
|
they are omitted for compilers that don't understand it. */
|
|
#if !defined __GNUC__ || __GNUC__ < 2
|
|
# define __attribute__(xyz) /* Ignore */
|
|
#endif
|
|
|
|
/* At some point during the gcc 2.96 development the `malloc' attribute
|
|
for functions was introduced. We don't want to use it unconditionally
|
|
(although this would be possible) since it generates warnings. */
|
|
#if __GNUC_PREREQ (2,96)
|
|
# define __attribute_malloc__ __attribute__ ((__malloc__))
|
|
#else
|
|
# define __attribute_malloc__ /* Ignore */
|
|
#endif
|
|
|
|
/* Tell the compiler which arguments to an allocation function
|
|
indicate the size of the allocation. */
|
|
#if __GNUC_PREREQ (4, 3)
|
|
# define __attribute_alloc_size__(params) \
|
|
__attribute__ ((__alloc_size__ params))
|
|
#else
|
|
# define __attribute_alloc_size__(params) /* Ignore. */
|
|
#endif
|
|
|
|
/* At some point during the gcc 2.96 development the `pure' attribute
|
|
for functions was introduced. We don't want to use it unconditionally
|
|
(although this would be possible) since it generates warnings. */
|
|
#if __GNUC_PREREQ (2,96)
|
|
# define __attribute_pure__ __attribute__ ((__pure__))
|
|
#else
|
|
# define __attribute_pure__ /* Ignore */
|
|
#endif
|
|
|
|
/* This declaration tells the compiler that the value is constant. */
|
|
#if __GNUC_PREREQ (2,5)
|
|
# define __attribute_const__ __attribute__ ((__const__))
|
|
#else
|
|
# define __attribute_const__ /* Ignore */
|
|
#endif
|
|
|
|
/* At some point during the gcc 3.1 development the `used' attribute
|
|
for functions was introduced. We don't want to use it unconditionally
|
|
(although this would be possible) since it generates warnings. */
|
|
#if __GNUC_PREREQ (3,1)
|
|
# define __attribute_used__ __attribute__ ((__used__))
|
|
# define __attribute_noinline__ __attribute__ ((__noinline__))
|
|
#else
|
|
# define __attribute_used__ __attribute__ ((__unused__))
|
|
# define __attribute_noinline__ /* Ignore */
|
|
#endif
|
|
|
|
/* Since version 3.2, gcc allows marking deprecated functions. */
|
|
#if __GNUC_PREREQ (3,2)
|
|
# define __attribute_deprecated__ __attribute__ ((__deprecated__))
|
|
#else
|
|
# define __attribute_deprecated__ /* Ignore */
|
|
#endif
|
|
|
|
/* Since version 4.5, gcc also allows one to specify the message printed
|
|
when a deprecated function is used. clang claims to be gcc 4.2, but
|
|
may also support this feature. */
|
|
#if __GNUC_PREREQ (4,5) || \
|
|
__glibc_clang_has_extension (__attribute_deprecated_with_message__)
|
|
# define __attribute_deprecated_msg__(msg) \
|
|
__attribute__ ((__deprecated__ (msg)))
|
|
#else
|
|
# define __attribute_deprecated_msg__(msg) __attribute_deprecated__
|
|
#endif
|
|
|
|
/* At some point during the gcc 2.8 development the `format_arg' attribute
|
|
for functions was introduced. We don't want to use it unconditionally
|
|
(although this would be possible) since it generates warnings.
|
|
If several `format_arg' attributes are given for the same function, in
|
|
gcc-3.0 and older, all but the last one are ignored. In newer gccs,
|
|
all designated arguments are considered. */
|
|
#if __GNUC_PREREQ (2,8)
|
|
# define __attribute_format_arg__(x) __attribute__ ((__format_arg__ (x)))
|
|
#else
|
|
# define __attribute_format_arg__(x) /* Ignore */
|
|
#endif
|
|
|
|
/* At some point during the gcc 2.97 development the `strfmon' format
|
|
attribute for functions was introduced. We don't want to use it
|
|
unconditionally (although this would be possible) since it
|
|
generates warnings. */
|
|
#if __GNUC_PREREQ (2,97)
|
|
# define __attribute_format_strfmon__(a,b) \
|
|
__attribute__ ((__format__ (__strfmon__, a, b)))
|
|
#else
|
|
# define __attribute_format_strfmon__(a,b) /* Ignore */
|
|
#endif
|
|
|
|
/* The nonull function attribute allows to mark pointer parameters which
|
|
must not be NULL. */
|
|
#if __GNUC_PREREQ (3,3)
|
|
# define __nonnull(params) __attribute__ ((__nonnull__ params))
|
|
#else
|
|
# define __nonnull(params)
|
|
#endif
|
|
|
|
/* If fortification mode, we warn about unused results of certain
|
|
function calls which can lead to problems. */
|
|
#if __GNUC_PREREQ (3,4)
|
|
# define __attribute_warn_unused_result__ \
|
|
__attribute__ ((__warn_unused_result__))
|
|
# if __USE_FORTIFY_LEVEL > 0
|
|
# define __wur __attribute_warn_unused_result__
|
|
# endif
|
|
#else
|
|
# define __attribute_warn_unused_result__ /* empty */
|
|
#endif
|
|
#ifndef __wur
|
|
# define __wur /* Ignore */
|
|
#endif
|
|
|
|
/* Forces a function to be always inlined. */
|
|
#if __GNUC_PREREQ (3,2)
|
|
/* The Linux kernel defines __always_inline in stddef.h (283d7573), and
|
|
it conflicts with this definition. Therefore undefine it first to
|
|
allow either header to be included first. */
|
|
# undef __always_inline
|
|
# define __always_inline __inline __attribute__ ((__always_inline__))
|
|
#else
|
|
# undef __always_inline
|
|
# define __always_inline __inline
|
|
#endif
|
|
|
|
/* Associate error messages with the source location of the call site rather
|
|
than with the source location inside the function. */
|
|
#if __GNUC_PREREQ (4,3)
|
|
# define __attribute_artificial__ __attribute__ ((__artificial__))
|
|
#else
|
|
# define __attribute_artificial__ /* Ignore */
|
|
#endif
|
|
|
|
/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
|
|
inline semantics, unless -fgnu89-inline is used. Using __GNUC_STDC_INLINE__
|
|
or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
|
|
older than 4.3 may define these macros and still not guarantee GNU inlining
|
|
semantics.
|
|
|
|
clang++ identifies itself as gcc-4.2, but has support for GNU inlining
|
|
semantics, that can be checked fot by using the __GNUC_STDC_INLINE_ and
|
|
__GNUC_GNU_INLINE__ macro definitions. */
|
|
#if (!defined __cplusplus || __GNUC_PREREQ (4,3) \
|
|
|| (defined __clang__ && (defined __GNUC_STDC_INLINE__ \
|
|
|| defined __GNUC_GNU_INLINE__)))
|
|
# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
|
|
# define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
|
|
# define __extern_always_inline \
|
|
extern __always_inline __attribute__ ((__gnu_inline__))
|
|
# else
|
|
# define __extern_inline extern __inline
|
|
# define __extern_always_inline extern __always_inline
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef __extern_always_inline
|
|
# define __fortify_function __extern_always_inline __attribute_artificial__
|
|
#endif
|
|
|
|
/* GCC 4.3 and above allow passing all anonymous arguments of an
|
|
__extern_always_inline function to some other vararg function. */
|
|
#if __GNUC_PREREQ (4,3)
|
|
# define __va_arg_pack() __builtin_va_arg_pack ()
|
|
# define __va_arg_pack_len() __builtin_va_arg_pack_len ()
|
|
#endif
|
|
|
|
/* It is possible to compile containing GCC extensions even if GCC is
|
|
run in pedantic mode if the uses are carefully marked using the
|
|
`__extension__' keyword. But this is not generally available before
|
|
version 2.8. */
|
|
#if !__GNUC_PREREQ (2,8)
|
|
# define __extension__ /* Ignore */
|
|
#endif
|
|
|
|
/* __restrict is known in EGCS 1.2 and above. */
|
|
#if !__GNUC_PREREQ (2,92)
|
|
# define __restrict /* Ignore */
|
|
#endif
|
|
|
|
/* ISO C99 also allows to declare arrays as non-overlapping. The syntax is
|
|
array_name[restrict]
|
|
GCC 3.1 supports this. */
|
|
#if __GNUC_PREREQ (3,1) && !defined __GNUG__
|
|
# define __restrict_arr __restrict
|
|
#else
|
|
# ifdef __GNUC__
|
|
# define __restrict_arr /* Not supported in old GCC. */
|
|
# else
|
|
# if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
|
|
# define __restrict_arr restrict
|
|
# else
|
|
/* Some other non-C99 compiler. */
|
|
# define __restrict_arr /* Not supported. */
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#if __GNUC__ >= 3
|
|
# define __glibc_unlikely(cond) __builtin_expect ((cond), 0)
|
|
# define __glibc_likely(cond) __builtin_expect ((cond), 1)
|
|
#else
|
|
# define __glibc_unlikely(cond) (cond)
|
|
# define __glibc_likely(cond) (cond)
|
|
#endif
|
|
|
|
#if (!defined _Noreturn \
|
|
&& (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
|
|
&& !__GNUC_PREREQ (4,7))
|
|
# if __GNUC_PREREQ (2,8)
|
|
# define _Noreturn __attribute__ ((__noreturn__))
|
|
# else
|
|
# define _Noreturn
|
|
# endif
|
|
#endif
|
|
|
|
#if (!defined _Static_assert && !defined __cplusplus \
|
|
&& (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
|
|
&& (!__GNUC_PREREQ (4, 6) || defined __STRICT_ANSI__))
|
|
# define _Static_assert(expr, diagnostic) \
|
|
extern int (*__Static_assert_function (void)) \
|
|
[!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
|
|
#endif
|
|
|
|
#include <bits/wordsize.h>
|
|
#include <bits/long-double.h>
|
|
|
|
#if defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
|
|
# define __LDBL_COMPAT 1
|
|
# ifdef __REDIRECT
|
|
# define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias)
|
|
# define __LDBL_REDIR(name, proto) \
|
|
__LDBL_REDIR1 (name, proto, __nldbl_##name)
|
|
# define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias)
|
|
# define __LDBL_REDIR_NTH(name, proto) \
|
|
__LDBL_REDIR1_NTH (name, proto, __nldbl_##name)
|
|
# define __LDBL_REDIR1_DECL(name, alias) \
|
|
extern __typeof (name) name __asm (__ASMNAME (#alias));
|
|
# define __LDBL_REDIR_DECL(name) \
|
|
extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name));
|
|
# define __REDIRECT_LDBL(name, proto, alias) \
|
|
__LDBL_REDIR1 (name, proto, __nldbl_##alias)
|
|
# define __REDIRECT_NTH_LDBL(name, proto, alias) \
|
|
__LDBL_REDIR1_NTH (name, proto, __nldbl_##alias)
|
|
# endif
|
|
#endif
|
|
#if !defined __LDBL_COMPAT || !defined __REDIRECT
|
|
# define __LDBL_REDIR1(name, proto, alias) name proto
|
|
# define __LDBL_REDIR(name, proto) name proto
|
|
# define __LDBL_REDIR1_NTH(name, proto, alias) name proto __THROW
|
|
# define __LDBL_REDIR_NTH(name, proto) name proto __THROW
|
|
# define __LDBL_REDIR_DECL(name)
|
|
# ifdef __REDIRECT
|
|
# define __REDIRECT_LDBL(name, proto, alias) __REDIRECT (name, proto, alias)
|
|
# define __REDIRECT_NTH_LDBL(name, proto, alias) \
|
|
__REDIRECT_NTH (name, proto, alias)
|
|
# endif
|
|
#endif
|
|
|
|
/* __glibc_macro_warning (MESSAGE) issues warning MESSAGE. This is
|
|
intended for use in preprocessor macros.
|
|
|
|
Note: MESSAGE must be a _single_ string; concatenation of string
|
|
literals is not supported. */
|
|
#if __GNUC_PREREQ (4,8) || __glibc_clang_prereq (3,5)
|
|
# define __glibc_macro_warning1(message) _Pragma (#message)
|
|
# define __glibc_macro_warning(message) \
|
|
__glibc_macro_warning1 (GCC warning message)
|
|
#else
|
|
# define __glibc_macro_warning(msg)
|
|
#endif
|
|
|
|
#endif /* sys/cdefs.h */
|