[ViewVC] Diff of: cvs/libecb/ecb.h

Comparing libecb/ecb.h (file contents):
Revision 1.81 by root, Fri Mar 23 19:04:07 2012 UTC vs.
Revision 1.155 by root, Wed Feb 18 20:48:59 2015 UTC

…		…
1	/*	1	/*
2	* libecb - http://software.schmorp.de/pkg/libecb	2	* libecb - http://software.schmorp.de/pkg/libecb
3	*	3	*
4	* Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>	4	* Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
5	* Copyright (©) 2011 Emanuele Giaquinta	5	* Copyright (©) 2011 Emanuele Giaquinta
6	* All rights reserved.	6	* All rights reserved.
7	*	7	*
8	* Redistribution and use in source and binary forms, with or without modifica-	8	* Redistribution and use in source and binary forms, with or without modifica-
9	* tion, are permitted provided that the following conditions are met:	9	* tion, are permitted provided that the following conditions are met:
23	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;	23	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,	24	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-	25	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
26	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED	26	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
27	* OF THE POSSIBILITY OF SUCH DAMAGE.	27	* OF THE POSSIBILITY OF SUCH DAMAGE.
		28	*
		29	* Alternatively, the contents of this file may be used under the terms of
		30	* the GNU General Public License ("GPL") version 2 or any later version,
		31	* in which case the provisions of the GPL are applicable instead of
		32	* the above. If you wish to allow the use of your version of this file
		33	* only under the terms of the GPL and not to allow others to use your
		34	* version of this file under the BSD license, indicate your decision
		35	* by deleting the provisions above and replace them with the notice
		36	* and other provisions required by the GPL. If you do not delete the
		37	* provisions above, a recipient may use your version of this file under
		38	* either the BSD or the GPL.
28	*/	39	*/
29		40
30	#ifndef ECB_H	41	#ifndef ECB_H
31	#define ECB_H	42	#define ECB_H
		43
		44	/* 16 bits major, 16 bits minor */
		45	#define ECB_VERSION 0x00010004
32		46
33	#ifdef _WIN32	47	#ifdef _WIN32
34	typedef signed char int8_t;	48	typedef signed char int8_t;
35	typedef unsigned char uint8_t;	49	typedef unsigned char uint8_t;
36	typedef signed short int16_t;	50	typedef signed short int16_t;
…		…
42	typedef unsigned long long uint64_t;	56	typedef unsigned long long uint64_t;
43	#else /* _MSC_VER \|\| __BORLANDC__ */	57	#else /* _MSC_VER \|\| __BORLANDC__ */
44	typedef signed __int64 int64_t;	58	typedef signed __int64 int64_t;
45	typedef unsigned __int64 uint64_t;	59	typedef unsigned __int64 uint64_t;
46	#endif	60	#endif
		61	#ifdef _WIN64
		62	#define ECB_PTRSIZE 8
		63	typedef uint64_t uintptr_t;
		64	typedef int64_t intptr_t;
		65	#else
		66	#define ECB_PTRSIZE 4
		67	typedef uint32_t uintptr_t;
		68	typedef int32_t intptr_t;
		69	#endif
47	#else	70	#else
48	#include <inttypes.h>	71	#include <inttypes.h>
		72	#if UINTMAX_MAX > 0xffffffffU
		73	#define ECB_PTRSIZE 8
		74	#else
		75	#define ECB_PTRSIZE 4
		76	#endif
		77	#endif
		78
		79	/* work around x32 idiocy by defining proper macros */
		80	#if __amd64 \|\| __x86_64 \|\| _M_AMD64 \|\| _M_X64
		81	#if _ILP32
		82	#define ECB_AMD64_X32 1
		83	#else
		84	#define ECB_AMD64 1
		85	#endif
49	#endif	86	#endif
50		87
51	/* many compilers define _GNUC_ to some versions but then only implement	88	/* many compilers define _GNUC_ to some versions but then only implement
52	* what their idiot authors think are the "more important" extensions,	89	* what their idiot authors think are the "more important" extensions,
53	* causing enormous grief in return for some better fake benchmark numbers.	90	* causing enormous grief in return for some better fake benchmark numbers.
54	* or so.	91	* or so.
55	* we try to detect these and simply assume they are not gcc - if they have	92	* we try to detect these and simply assume they are not gcc - if they have
56	* an issue with that they should have done it right in the first place.	93	* an issue with that they should have done it right in the first place.
57	*/	94	*/
58	#ifndef ECB_GCC_VERSION
59	#if !defined(__GNUC_MINOR__) \|\| defined(__INTEL_COMPILER) \|\| defined(__SUNPRO_C) \|\| defined(__SUNPRO_CC) \|\| defined(__llvm__) \|\| defined(__clang__)	95	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__
60	#define ECB_GCC_VERSION(major,minor) 0	96	#define ECB_GCC_VERSION(major,minor) 0
61	#else	97	#else
62	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	98	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
63	#endif	99	#endif
		100
		101	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
		102
		103	#if __clang__ && defined __has_builtin
		104	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		105	#else
		106	#define ECB_CLANG_BUILTIN(x) 0
		107	#endif
		108
		109	#if __clang__ && defined __has_extension
		110	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		111	#else
		112	#define ECB_CLANG_EXTENSION(x) 0
		113	#endif
		114
		115	#define ECB_CPP (__cplusplus+0)
		116	#define ECB_CPP11 (__cplusplus >= 201103L)
		117
		118	#if ECB_CPP
		119	#define ECB_C 0
		120	#define ECB_STDC_VERSION 0
		121	#else
		122	#define ECB_C 1
		123	#define ECB_STDC_VERSION __STDC_VERSION__
		124	#endif
		125
		126	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		127	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		128
		129	#if ECB_CPP
		130	#define ECB_EXTERN_C extern "C"
		131	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		132	#define ECB_EXTERN_C_END }
		133	#else
		134	#define ECB_EXTERN_C extern
		135	#define ECB_EXTERN_C_BEG
		136	#define ECB_EXTERN_C_END
64	#endif	137	#endif
65		138
66	/*****************************************************************************/	139	/*****************************************************************************/
67		140
68	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */	141	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
69	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */	142	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
70		143
71	#if ECB_NO_THREADS	144	#if ECB_NO_THREADS
72	# define ECB_NO_SMP 1	145	#define ECB_NO_SMP 1
73	#endif	146	#endif
74		147
75	#if ECB_NO_THREADS \|\| ECB_NO_SMP	148	#if ECB_NO_SMP
76	#define ECB_MEMORY_FENCE do { } while (0)	149	#define ECB_MEMORY_FENCE do { } while (0)
77	#endif	150	#endif
78		151
79	#ifndef ECB_MEMORY_FENCE	152	#ifndef ECB_MEMORY_FENCE
80	#if ECB_GCC_VERSION(2,5) \|\| defined(__INTEL_COMPILER) \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	153	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
81	#if __i386 \|\| __i386__	154	#if __i386 \|\| __i386__
82	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	155	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
83	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */	156	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
84	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */	157	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
85	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	158	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__
86	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	159	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
87	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")	160	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
88	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */	161	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
89	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	162	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
90	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	163	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
91	#elif defined(__ARM_ARCH_6__ ) \|\| defined(__ARM_ARCH_6J__ ) \	164	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
92	\|\| defined(__ARM_ARCH_6K__) \|\| defined(__ARM_ARCH_6ZK__)	165	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__
93	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")	166	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
94	#elif defined(__ARM_ARCH_7__ ) \|\| defined(__ARM_ARCH_7A__ ) \	167	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
95	\|\| defined(__ARM_ARCH_7M__) \|\| defined(__ARM_ARCH_7R__ )	168	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__
96	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	169	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		170	#elif __aarch64__
		171	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
97	#elif __sparc \|\| __sparc__	172	#elif (__sparc \|\| __sparc__) && !__sparcv8
98	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad \| " : : : "memory")	173	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
99	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	174	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
100	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	175	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
101	#elif defined(__s390__) \|\| defined(__s390x__)	176	#elif defined __s390__ \|\| defined __s390x__
102	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	177	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
103	#elif defined(__mips__)	178	#elif defined __mips__
		179	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		180	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
		181	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
		182	#elif defined __alpha__
104	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	183	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
105	#elif __xlC__	184	#elif defined __hppa__
106	#define ECB_MEMORY_FENCE __lwsync ()	185	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		186	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		187	#elif defined __ia64__
		188	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		189	#elif defined __m68k__
		190	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		191	#elif defined __m88k__
		192	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		193	#elif defined __sh__
		194	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
107	#endif	195	#endif
108	#endif	196	#endif
109	#endif	197	#endif
110		198
111	#ifndef ECB_MEMORY_FENCE	199	#ifndef ECB_MEMORY_FENCE
		200	#if ECB_GCC_VERSION(4,7)
		201	/* see comment below (stdatomic.h) about the C11 memory model. */
		202	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		203	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		204	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		205
		206	#elif ECB_CLANG_EXTENSION(c_atomic)
		207	/* see comment below (stdatomic.h) about the C11 memory model. */
		208	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		209	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		210	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		211
112	#if ECB_GCC_VERSION(4,4) \|\| defined(__INTEL_COMPILER) \|\| defined(__clang__)	212	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
113	#define ECB_MEMORY_FENCE __sync_synchronize ()	213	#define ECB_MEMORY_FENCE __sync_synchronize ()
114	/#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) /	214	#elif _MSC_VER >= 1500 /* VC++ 2008 */
115	/#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) /	215	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		216	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		217	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		218	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		219	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
116	#elif _MSC_VER >= 1400 /* VC++ 2005 */	220	#elif _MSC_VER >= 1400 /* VC++ 2005 */
117	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	221	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
118	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	222	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
119	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	223	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
120	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	224	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
121	#elif defined(_WIN32)	225	#elif defined _WIN32
122	#include <WinNT.h>	226	#include <WinNT.h>
123	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */	227	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
124	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	228	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
125	#include <mbarrier.h>	229	#include <mbarrier.h>
126	#define ECB_MEMORY_FENCE __machine_rw_barrier ()	230	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
127	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()	231	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
128	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()	232	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
		233	#elif __xlC__
		234	#define ECB_MEMORY_FENCE __sync ()
		235	#endif
		236	#endif
		237
		238	#ifndef ECB_MEMORY_FENCE
		239	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		240	/* we assume that these memory fences work on all variables/all memory accesses, */
		241	/* not just C11 atomics and atomic accesses */
		242	#include <stdatomic.h>
		243	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
		244	/* any fence other than seq_cst, which isn't very efficient for us. */
		245	/* Why that is, we don't know - either the C11 memory model is quite useless */
		246	/* for most usages, or gcc and clang have a bug */
		247	/* I currently lean towards the latter, and inefficiently implement */
		248	/* all three of ecb's fences as a seq_cst fence */
		249	/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
		250	/* for all __atomic_thread_fence's except seq_cst */
		251	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
129	#endif	252	#endif
130	#endif	253	#endif
131		254
132	#ifndef ECB_MEMORY_FENCE	255	#ifndef ECB_MEMORY_FENCE
133	#if !ECB_AVOID_PTHREADS	256	#if !ECB_AVOID_PTHREADS
…		…
145	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;	268	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
146	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)	269	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
147	#endif	270	#endif
148	#endif	271	#endif
149		272
150	#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)	273	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
151	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE	274	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
152	#endif	275	#endif
153		276
154	#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)	277	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
155	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	278	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
156	#endif	279	#endif
157		280
158	/*****************************************************************************/	281	/*****************************************************************************/
159		282
160	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	283	#if ECB_CPP
161
162	#if __cplusplus
163	#define ecb_inline static inline	284	#define ecb_inline static inline
164	#elif ECB_GCC_VERSION(2,5)	285	#elif ECB_GCC_VERSION(2,5)
165	#define ecb_inline static __inline__	286	#define ecb_inline static __inline__
166	#elif ECB_C99	287	#elif ECB_C99
167	#define ecb_inline static inline	288	#define ecb_inline static inline
…		…
181		302
182	#define ECB_CONCAT_(a, b) a ## b	303	#define ECB_CONCAT_(a, b) a ## b
183	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	304	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
184	#define ECB_STRINGIFY_(a) # a	305	#define ECB_STRINGIFY_(a) # a
185	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	306	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		307	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
186		308
187	#define ecb_function_ ecb_inline	309	#define ecb_function_ ecb_inline
188		310
189	#if ECB_GCC_VERSION(3,1)	311	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
190	#define ecb_attribute(attrlist) __attribute__(attrlist)	312	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		313	#else
		314	#define ecb_attribute(attrlist)
		315	#endif
		316
		317	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_constant_p)
191	#define ecb_is_constant(expr) __builtin_constant_p (expr)	318	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		319	#else
		320	/* possible C11 impl for integral types
		321	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		322	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		323
		324	#define ecb_is_constant(expr) 0
		325	#endif
		326
		327	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_expect)
192	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	328	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		329	#else
		330	#define ecb_expect(expr,value) (expr)
		331	#endif
		332
		333	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_prefetch)
193	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	334	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
194	#else	335	#else
195	#define ecb_attribute(attrlist)
196	#define ecb_is_constant(expr) 0
197	#define ecb_expect(expr,value) (expr)
198	#define ecb_prefetch(addr,rw,locality)	336	#define ecb_prefetch(addr,rw,locality)
199	#endif	337	#endif
200		338
201	/* no emulation for ecb_decltype */	339	/* no emulation for ecb_decltype */
202	#if ECB_GCC_VERSION(4,5)	340	#if ECB_CPP11
		341	// older implementations might have problems with decltype(x)::type, work around it
		342	template<class T> struct ecb_decltype_t { typedef T type; };
203	#define ecb_decltype(x) __decltype(x)	343	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
204	#elif ECB_GCC_VERSION(3,0)	344	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
205	#define ecb_decltype(x) __typeof(x)	345	#define ecb_decltype(x) __typeof__ (x)
206	#endif	346	#endif
207		347
		348	#if _MSC_VER >= 1300
		349	#define ecb_deprecated __declspec (deprecated)
		350	#else
		351	#define ecb_deprecated ecb_attribute ((__deprecated__))
		352	#endif
		353
		354	#if __MSC_VER >= 1500
		355	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		356	#elif ECB_GCC_VERSION(4,5)
		357	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		358	#else
		359	#define ecb_deprecated_message(msg) ecb_deprecated
		360	#endif
		361
		362	#if _MSC_VER >= 1400
		363	#define ecb_noinline __declspec (noinline)
		364	#else
208	#define ecb_noinline ecb_attribute ((__noinline__))	365	#define ecb_noinline ecb_attribute ((__noinline__))
209	#define ecb_noreturn ecb_attribute ((__noreturn__))	366	#endif
		367
210	#define ecb_unused ecb_attribute ((__unused__))	368	#define ecb_unused ecb_attribute ((__unused__))
211	#define ecb_const ecb_attribute ((__const__))	369	#define ecb_const ecb_attribute ((__const__))
212	#define ecb_pure ecb_attribute ((__pure__))	370	#define ecb_pure ecb_attribute ((__pure__))
		371
		372	/* TODO http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
		373	#if ECB_C11 \|\| __IBMC_NORETURN
		374	/* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */
		375	#define ecb_noreturn _Noreturn
		376	#elif ECB_CPP11
		377	#define ecb_noreturn [[noreturn]]
		378	#elif _MSC_VER >= 1200
		379	#define ecb_noreturn __declspec (noreturn)
		380	#else
		381	#define ecb_noreturn ecb_attribute ((__noreturn__))
		382	#endif
213		383
214	#if ECB_GCC_VERSION(4,3)	384	#if ECB_GCC_VERSION(4,3)
215	#define ecb_artificial ecb_attribute ((__artificial__))	385	#define ecb_artificial ecb_attribute ((__artificial__))
216	#define ecb_hot ecb_attribute ((__hot__))	386	#define ecb_hot ecb_attribute ((__hot__))
217	#define ecb_cold ecb_attribute ((__cold__))	387	#define ecb_cold ecb_attribute ((__cold__))
…		…
229	/* for compatibility to the rest of the world */	399	/* for compatibility to the rest of the world */
230	#define ecb_likely(expr) ecb_expect_true (expr)	400	#define ecb_likely(expr) ecb_expect_true (expr)
231	#define ecb_unlikely(expr) ecb_expect_false (expr)	401	#define ecb_unlikely(expr) ecb_expect_false (expr)
232		402
233	/* count trailing zero bits and count # of one bits */	403	/* count trailing zero bits and count # of one bits */
234	#if ECB_GCC_VERSION(3,4)	404	#if ECB_GCC_VERSION(3,4) \
		405	\|\| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		406	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		407	&& ECB_CLANG_BUILTIN(__builtin_popcount))
235	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */	408	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
236	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	409	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
237	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	410	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
238	#define ecb_ctz32(x) __builtin_ctz (x)	411	#define ecb_ctz32(x) __builtin_ctz (x)
239	#define ecb_ctz64(x) __builtin_ctzll (x)	412	#define ecb_ctz64(x) __builtin_ctzll (x)
240	#define ecb_popcount32(x) __builtin_popcount (x)	413	#define ecb_popcount32(x) __builtin_popcount (x)
241	/* no popcountll */	414	/* no popcountll */
242	#else	415	#else
243	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	416	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
244	ecb_function_ int	417	ecb_function_ ecb_const int
245	ecb_ctz32 (uint32_t x)	418	ecb_ctz32 (uint32_t x)
246	{	419	{
247	int r = 0;	420	int r = 0;
248		421
249	x &= ~x + 1; /* this isolates the lowest bit */	422	x &= ~x + 1; /* this isolates the lowest bit */
…		…
263	#endif	436	#endif
264		437
265	return r;	438	return r;
266	}	439	}
267		440
268	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	441	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
269	ecb_function_ int	442	ecb_function_ ecb_const int
270	ecb_ctz64 (uint64_t x)	443	ecb_ctz64 (uint64_t x)
271	{	444	{
272	int shift = x & 0xffffffffU ? 0 : 32;	445	int shift = x & 0xffffffffU ? 0 : 32;
273	return ecb_ctz32 (x >> shift) + shift;	446	return ecb_ctz32 (x >> shift) + shift;
274	}	447	}
275		448
276	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	449	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
277	ecb_function_ int	450	ecb_function_ ecb_const int
278	ecb_popcount32 (uint32_t x)	451	ecb_popcount32 (uint32_t x)
279	{	452	{
280	x -= (x >> 1) & 0x55555555;	453	x -= (x >> 1) & 0x55555555;
281	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	454	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
282	x = ((x >> 4) + x) & 0x0f0f0f0f;	455	x = ((x >> 4) + x) & 0x0f0f0f0f;
283	x *= 0x01010101;	456	x *= 0x01010101;
284		457
285	return x >> 24;	458	return x >> 24;
286	}	459	}
287		460
288	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	461	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
289	ecb_function_ int ecb_ld32 (uint32_t x)	462	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
290	{	463	{
291	int r = 0;	464	int r = 0;
292		465
293	if (x >> 16) { x >>= 16; r += 16; }	466	if (x >> 16) { x >>= 16; r += 16; }
294	if (x >> 8) { x >>= 8; r += 8; }	467	if (x >> 8) { x >>= 8; r += 8; }
…		…
297	if (x >> 1) { r += 1; }	470	if (x >> 1) { r += 1; }
298		471
299	return r;	472	return r;
300	}	473	}
301		474
302	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	475	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
303	ecb_function_ int ecb_ld64 (uint64_t x)	476	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
304	{	477	{
305	int r = 0;	478	int r = 0;
306		479
307	if (x >> 32) { x >>= 32; r += 32; }	480	if (x >> 32) { x >>= 32; r += 32; }
308		481
309	return r + ecb_ld32 (x);	482	return r + ecb_ld32 (x);
310	}	483	}
311	#endif	484	#endif
312		485
		486	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
		487	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		488	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
		489	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		490
313	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	491	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
314	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	492	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
315	{	493	{
316	return ( (x * 0x0802U & 0x22110U)	494	return ( (x * 0x0802U & 0x22110U)
317	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	495	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
318	}	496	}
319		497
320	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	498	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
321	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	499	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
322	{	500	{
323	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	501	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
324	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	502	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
325	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	503	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
326	x = ( x >> 8 ) \| ( x << 8);	504	x = ( x >> 8 ) \| ( x << 8);
327		505
328	return x;	506	return x;
329	}	507	}
330		508
331	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	509	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
332	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	510	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
333	{	511	{
334	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	512	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
335	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	513	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
336	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	514	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
337	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	515	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
340	return x;	518	return x;
341	}	519	}
342		520
343	/* popcount64 is only available on 64 bit cpus as gcc builtin */	521	/* popcount64 is only available on 64 bit cpus as gcc builtin */
344	/* so for this version we are lazy */	522	/* so for this version we are lazy */
345	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	523	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
346	ecb_function_ int	524	ecb_function_ ecb_const int
347	ecb_popcount64 (uint64_t x)	525	ecb_popcount64 (uint64_t x)
348	{	526	{
349	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	527	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
350	}	528	}
351		529
352	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;	530	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
353	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;	531	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
354	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;	532	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
355	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;	533	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
356	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;	534	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
357	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;	535	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
358	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;	536	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
359	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;	537	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
360		538
361	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }	539	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
362	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }	540	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
363	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }	541	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
364	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }	542	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
365	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }	543	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
366	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }	544	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
367	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }	545	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
368	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }	546	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
369		547
370	#if ECB_GCC_VERSION(4,3)	548	#if ECB_GCC_VERSION(4,3) \|\| (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
371	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	549	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
372	#define ecb_bswap32(x) __builtin_bswap32 (x)	550	#define ecb_bswap32(x) __builtin_bswap32 (x)
373	#define ecb_bswap64(x) __builtin_bswap64 (x)	551	#define ecb_bswap64(x) __builtin_bswap64 (x)
374	#else	552	#else
375	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	553	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
376	ecb_function_ uint16_t	554	ecb_function_ ecb_const uint16_t
377	ecb_bswap16 (uint16_t x)	555	ecb_bswap16 (uint16_t x)
378	{	556	{
379	return ecb_rotl16 (x, 8);	557	return ecb_rotl16 (x, 8);
380	}	558	}
381		559
382	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	560	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
383	ecb_function_ uint32_t	561	ecb_function_ ecb_const uint32_t
384	ecb_bswap32 (uint32_t x)	562	ecb_bswap32 (uint32_t x)
385	{	563	{
386	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	564	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
387	}	565	}
388		566
389	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	567	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
390	ecb_function_ uint64_t	568	ecb_function_ ecb_const uint64_t
391	ecb_bswap64 (uint64_t x)	569	ecb_bswap64 (uint64_t x)
392	{	570	{
393	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	571	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
394	}	572	}
395	#endif	573	#endif
396		574
397	#if ECB_GCC_VERSION(4,5)	575	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
398	#define ecb_unreachable() __builtin_unreachable ()	576	#define ecb_unreachable() __builtin_unreachable ()
399	#else	577	#else
400	/* this seems to work fine, but gcc always emits a warning for it :/ */	578	/* this seems to work fine, but gcc always emits a warning for it :/ */
401	ecb_inline void ecb_unreachable (void) ecb_noreturn;	579	ecb_inline ecb_noreturn void ecb_unreachable (void);
402	ecb_inline void ecb_unreachable (void) { }	580	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
403	#endif	581	#endif
404		582
405	/* try to tell the compiler that some condition is definitely true */	583	/* try to tell the compiler that some condition is definitely true */
406	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)	584	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
407		585
408	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	586	ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
409	ecb_inline unsigned char	587	ecb_inline ecb_const unsigned char
410	ecb_byteorder_helper (void)	588	ecb_byteorder_helper (void)
411	{	589	{
412	const uint32_t u = 0x11223344;	590	/* the union code still generates code under pressure in gcc, */
413	return (unsigned char )&u;	591	/* but less than using pointers, and always seems to */
		592	/* successfully return a constant. */
		593	/* the reason why we have this horrible preprocessor mess */
		594	/* is to avoid it in all cases, at least on common architectures */
		595	/* or when using a recent enough gcc version (>= 4.6) */
		596	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64
		597	return 0x44;
		598	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
		599	return 0x44;
		600	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
		601	return 0x11;
		602	#else
		603	union
		604	{
		605	uint32_t i;
		606	uint8_t c;
		607	} u = { 0x11223344 };
		608	return u.c;
		609	#endif
414	}	610	}
415		611
416	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	612	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
417	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	613	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
418	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	614	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
419	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	615	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
420		616
421	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	617	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
422	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	618	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
423	#else	619	#else
424	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	620	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
425	#endif	621	#endif
426		622
427	#if __cplusplus	623	#if ECB_CPP
428	template<typename T>	624	template<typename T>
429	static inline T ecb_div_rd (T val, T div)	625	static inline T ecb_div_rd (T val, T div)
430	{	626	{
431	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	627	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
432	}	628	}
…		…
449	}	645	}
450	#else	646	#else
451	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	647	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
452	#endif	648	#endif
453		649
		650	/*******************************************************************************/
		651	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		652
		653	/* basically, everything uses "ieee pure-endian" floating point numbers */
		654	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		655	#if 0 \
		656	\|\| __i386 \|\| __i386__ \
		657	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \
		658	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
		659	\|\| defined __s390__ \|\| defined __s390x__ \
		660	\|\| defined __mips__ \
		661	\|\| defined __alpha__ \
		662	\|\| defined __hppa__ \
		663	\|\| defined __ia64__ \
		664	\|\| defined __m68k__ \
		665	\|\| defined __m88k__ \
		666	\|\| defined __sh__ \
		667	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64 \
		668	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__)) \
		669	\|\| defined __aarch64__
		670	#define ECB_STDFP 1
		671	#include <string.h> /* for memcpy */
		672	#else
		673	#define ECB_STDFP 0
		674	#endif
		675
		676	#ifndef ECB_NO_LIBM
		677
		678	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		679
		680	/* only the oldest of old doesn't have this one. solaris. */
		681	#ifdef INFINITY
		682	#define ECB_INFINITY INFINITY
		683	#else
		684	#define ECB_INFINITY HUGE_VAL
454	#endif	685	#endif
455		686
		687	#ifdef NAN
		688	#define ECB_NAN NAN
		689	#else
		690	#define ECB_NAN ECB_INFINITY
		691	#endif
		692
		693	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
		694	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		695	#else
		696	#define ecb_ldexpf(x,e) (float) ldexp ((x), (e))
		697	#endif
		698
		699	/* converts an ieee half/binary16 to a float */
		700	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		701	ecb_function_ ecb_const float
		702	ecb_binary16_to_float (uint16_t x)
		703	{
		704	int e = (x >> 10) & 0x1f;
		705	int m = x & 0x3ff;
		706	float r;
		707
		708	if (!e ) r = ecb_ldexpf (m , -24);
		709	else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
		710	else if (m ) r = ECB_NAN;
		711	else r = ECB_INFINITY;
		712
		713	return x & 0x8000 ? -r : r;
		714	}
		715
		716	/* convert a float to ieee single/binary32 */
		717	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
		718	ecb_function_ ecb_const uint32_t
		719	ecb_float_to_binary32 (float x)
		720	{
		721	uint32_t r;
		722
		723	#if ECB_STDFP
		724	memcpy (&r, &x, 4);
		725	#else
		726	/* slow emulation, works for anything but -0 */
		727	uint32_t m;
		728	int e;
		729
		730	if (x == 0e0f ) return 0x00000000U;
		731	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		732	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		733	if (x != x ) return 0x7fbfffffU;
		734
		735	m = frexpf (x, &e) * 0x1000000U;
		736
		737	r = m & 0x80000000U;
		738
		739	if (r)
		740	m = -m;
		741
		742	if (e <= -126)
		743	{
		744	m &= 0xffffffU;
		745	m >>= (-125 - e);
		746	e = -126;
		747	}
		748
		749	r \|= (e + 126) << 23;
		750	r \|= m & 0x7fffffU;
		751	#endif
		752
		753	return r;
		754	}
		755
		756	/* converts an ieee single/binary32 to a float */
		757	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
		758	ecb_function_ ecb_const float
		759	ecb_binary32_to_float (uint32_t x)
		760	{
		761	float r;
		762
		763	#if ECB_STDFP
		764	memcpy (&r, &x, 4);
		765	#else
		766	/* emulation, only works for normals and subnormals and +0 */
		767	int neg = x >> 31;
		768	int e = (x >> 23) & 0xffU;
		769
		770	x &= 0x7fffffU;
		771
		772	if (e)
		773	x \|= 0x800000U;
		774	else
		775	e = 1;
		776
		777	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
		778	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
		779
		780	r = neg ? -r : r;
		781	#endif
		782
		783	return r;
		784	}
		785
		786	/* convert a double to ieee double/binary64 */
		787	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
		788	ecb_function_ ecb_const uint64_t
		789	ecb_double_to_binary64 (double x)
		790	{
		791	uint64_t r;
		792
		793	#if ECB_STDFP
		794	memcpy (&r, &x, 8);
		795	#else
		796	/* slow emulation, works for anything but -0 */
		797	uint64_t m;
		798	int e;
		799
		800	if (x == 0e0 ) return 0x0000000000000000U;
		801	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		802	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		803	if (x != x ) return 0X7ff7ffffffffffffU;
		804
		805	m = frexp (x, &e) * 0x20000000000000U;
		806
		807	r = m & 0x8000000000000000;;
		808
		809	if (r)
		810	m = -m;
		811
		812	if (e <= -1022)
		813	{
		814	m &= 0x1fffffffffffffU;
		815	m >>= (-1021 - e);
		816	e = -1022;
		817	}
		818
		819	r \|= ((uint64_t)(e + 1022)) << 52;
		820	r \|= m & 0xfffffffffffffU;
		821	#endif
		822
		823	return r;
		824	}
		825
		826	/* converts an ieee double/binary64 to a double */
		827	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
		828	ecb_function_ ecb_const double
		829	ecb_binary64_to_double (uint64_t x)
		830	{
		831	double r;
		832
		833	#if ECB_STDFP
		834	memcpy (&r, &x, 8);
		835	#else
		836	/* emulation, only works for normals and subnormals and +0 */
		837	int neg = x >> 63;
		838	int e = (x >> 52) & 0x7ffU;
		839
		840	x &= 0xfffffffffffffU;
		841
		842	if (e)
		843	x \|= 0x10000000000000U;
		844	else
		845	e = 1;
		846
		847	/* we distrust ldexp a bit and do the 2*-53 scaling by an extra multiply /
		848	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		849
		850	r = neg ? -r : r;
		851	#endif
		852
		853	return r;
		854	}
		855
		856	#endif
		857
		858	#endif
		859

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Comparing libecb/ecb.h (file contents): Revision 1.81 by root, Fri Mar 23 19:04:07 2012 UTC vs. Revision 1.155 by root, Wed Feb 18 20:48:59 2015 UTC

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Comparing libecb/ecb.h (file contents):
Revision 1.81 by root, Fri Mar 23 19:04:07 2012 UTC vs.
Revision 1.155 by root, Wed Feb 18 20:48:59 2015 UTC