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

Comparing libecb/ecb.h (file contents):
Revision 1.109 by root, Fri Jun 29 14:05:50 2012 UTC vs.
Revision 1.179 by root, Sat Dec 28 08:01:05 2019 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
32		43
33	/* 16 bits major, 16 bits minor */	44	/* 16 bits major, 16 bits minor */
34	#define ECB_VERSION 0x00010001	45	#define ECB_VERSION 0x00010007
35		46
36	#ifdef _WIN32	47	#ifdef _WIN32
37	typedef signed char int8_t;	48	typedef signed char int8_t;
38	typedef unsigned char uint8_t;	49	typedef unsigned char uint8_t;
39	typedef signed short int16_t;	50	typedef signed short int16_t;
…		…
56	typedef uint32_t uintptr_t;	67	typedef uint32_t uintptr_t;
57	typedef int32_t intptr_t;	68	typedef int32_t intptr_t;
58	#endif	69	#endif
59	#else	70	#else
60	#include <inttypes.h>	71	#include <inttypes.h>
61	#if UINTMAX_MAX > 0xffffffffU	72	#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
62	#define ECB_PTRSIZE 8	73	#define ECB_PTRSIZE 8
63	#else	74	#else
64	#define ECB_PTRSIZE 4	75	#define ECB_PTRSIZE 4
		76	#endif
		77	#endif
		78
		79	#define ECB_GCC_AMD64 (__amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__)
		80	#define ECB_MSVC_AMD64 (_M_AMD64 \|\| _M_X64)
		81
		82	#ifndef ECB_OPTIMIZE_SIZE
		83	#if __OPTIMIZE_SIZE__
		84	#define ECB_OPTIMIZE_SIZE 1
		85	#else
		86	#define ECB_OPTIMIZE_SIZE 0
		87	#endif
		88	#endif
		89
		90	/* work around x32 idiocy by defining proper macros */
		91	#if ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64
		92	#if _ILP32
		93	#define ECB_AMD64_X32 1
		94	#else
		95	#define ECB_AMD64 1
65	#endif	96	#endif
66	#endif	97	#endif
67		98
68	/* many compilers define _GNUC_ to some versions but then only implement	99	/* many compilers define _GNUC_ to some versions but then only implement
69	* what their idiot authors think are the "more important" extensions,	100	* what their idiot authors think are the "more important" extensions,
70	* causing enormous grief in return for some better fake benchmark numbers.	101	* causing enormous grief in return for some better fake benchmark numbers.
71	* or so.	102	* or so.
72	* we try to detect these and simply assume they are not gcc - if they have	103	* we try to detect these and simply assume they are not gcc - if they have
73	* an issue with that they should have done it right in the first place.	104	* an issue with that they should have done it right in the first place.
74	*/	105	*/
75	#ifndef ECB_GCC_VERSION
76	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__	106	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__
77	#define ECB_GCC_VERSION(major,minor) 0	107	#define ECB_GCC_VERSION(major,minor) 0
78	#else	108	#else
79	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	109	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
80	#endif	110	#endif
81	#endif
82		111
83	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */	112	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
84	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	113
85	#define ECB_C11 (__STDC_VERSION__ >= 201112L)	114	#if __clang__ && defined __has_builtin
		115	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		116	#else
		117	#define ECB_CLANG_BUILTIN(x) 0
		118	#endif
		119
		120	#if __clang__ && defined __has_extension
		121	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		122	#else
		123	#define ECB_CLANG_EXTENSION(x) 0
		124	#endif
		125
86	#define ECB_CPP (__cplusplus+0)	126	#define ECB_CPP (__cplusplus+0)
87	#define ECB_CPP11 (__cplusplus >= 201103L)	127	#define ECB_CPP11 (__cplusplus >= 201103L)
		128	#define ECB_CPP14 (__cplusplus >= 201402L)
		129	#define ECB_CPP17 (__cplusplus >= 201703L)
		130
		131	#if ECB_CPP
		132	#define ECB_C 0
		133	#define ECB_STDC_VERSION 0
		134	#else
		135	#define ECB_C 1
		136	#define ECB_STDC_VERSION __STDC_VERSION__
		137	#endif
		138
		139	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		140	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		141	#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
88		142
89	#if ECB_CPP	143	#if ECB_CPP
90	#define ECB_EXTERN_C extern "C"	144	#define ECB_EXTERN_C extern "C"
91	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {	145	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
92	#define ECB_EXTERN_C_END }	146	#define ECB_EXTERN_C_END }
…		…
107		161
108	#if ECB_NO_SMP	162	#if ECB_NO_SMP
109	#define ECB_MEMORY_FENCE do { } while (0)	163	#define ECB_MEMORY_FENCE do { } while (0)
110	#endif	164	#endif
111		165
		166	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
		167	#if __xlC__ && ECB_CPP
		168	#include <builtins.h>
		169	#endif
		170
		171	#if 1400 <= _MSC_VER
		172	#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
		173	#endif
		174
112	#ifndef ECB_MEMORY_FENCE	175	#ifndef ECB_MEMORY_FENCE
113	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	176	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
		177	#define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
114	#if __i386 \|\| __i386__	178	#if __i386 \|\| __i386__
115	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	179	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
116	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	180	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
117	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	181	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
118	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	182	#elif ECB_GCC_AMD64
119	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	183	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
120	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	184	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
121	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	185	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
122	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	186	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
123	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	187	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		188	#elif defined __ARM_ARCH_2__ \
		189	\|\| defined __ARM_ARCH_3__ \|\| defined __ARM_ARCH_3M__ \
		190	\|\| defined __ARM_ARCH_4__ \|\| defined __ARM_ARCH_4T__ \
		191	\|\| defined __ARM_ARCH_5__ \|\| defined __ARM_ARCH_5E__ \
		192	\|\| defined __ARM_ARCH_5T__ \|\| defined __ARM_ARCH_5TE__ \
		193	\|\| defined __ARM_ARCH_5TEJ__
		194	/* should not need any, unless running old code on newer cpu - arm doesn't support that */
124	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \	195	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
125	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	196	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__ \
		197	\|\| defined __ARM_ARCH_6T2__
126	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")	198	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
127	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \	199	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
128	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	200	\|\| defined __ARM_ARCH_7R__ \|\| defined __ARM_ARCH_7M__
129	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	201	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
130	#elif __sparc \|\| __sparc__	202	#elif __aarch64__
		203	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		204	#elif (__sparc \|\| __sparc__) && !(__sparc_v8__ \|\| defined __sparcv8)
131	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")	205	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
132	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	206	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
133	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	207	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
134	#elif defined __s390__ \|\| defined __s390x__	208	#elif defined __s390__ \|\| defined __s390x__
135	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	209	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
136	#elif defined __mips__	210	#elif defined __mips__
		211	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		212	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
137	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	213	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
138	#elif defined __alpha__	214	#elif defined __alpha__
139	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	215	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
140	#elif defined __hppa__	216	#elif defined __hppa__
141	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")	217	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
142	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	218	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
143	#elif defined __ia64__	219	#elif defined __ia64__
144	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")	220	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		221	#elif defined __m68k__
		222	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		223	#elif defined __m88k__
		224	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		225	#elif defined __sh__
		226	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
145	#endif	227	#endif
146	#endif	228	#endif
147	#endif	229	#endif
148		230
149	#ifndef ECB_MEMORY_FENCE	231	#ifndef ECB_MEMORY_FENCE
150	#if ECB_GCC_VERSION(4,7)	232	#if ECB_GCC_VERSION(4,7)
151	/* see comment below (stdatomic.h) about the C11 memory model. */	233	/* see comment below (stdatomic.h) about the C11 memory model. */
152	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)	234	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
153	/#elif defined __clang && __has_feature (cxx_atomic)/	235	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		236	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		237	#define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
		238
		239	#elif ECB_CLANG_EXTENSION(c_atomic)
154	/* see comment below (stdatomic.h) about the C11 memory model. */	240	/* see comment below (stdatomic.h) about the C11 memory model. */
155	/#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)/	241	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		242	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		243	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		244	#define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
		245
156	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	246	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
157	#define ECB_MEMORY_FENCE __sync_synchronize ()	247	#define ECB_MEMORY_FENCE __sync_synchronize ()
		248	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		249	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		250	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		251	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		252	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		253	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
158	#elif _MSC_VER >= 1400 /* VC++ 2005 */	254	#elif _MSC_VER >= 1400 /* VC++ 2005 */
159	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	255	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
160	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	256	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
161	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	257	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
162	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	258	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
163	#elif defined _WIN32	259	#elif defined _WIN32
164	#include <WinNT.h>	260	#include <WinNT.h>
165	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */	261	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
166	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	262	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
167	#include <mbarrier.h>	263	#include <mbarrier.h>
168	#define ECB_MEMORY_FENCE __machine_rw_barrier ()	264	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
169	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()	265	#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
170	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()	266	#define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
		267	#define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
171	#elif __xlC__	268	#elif __xlC__
172	#define ECB_MEMORY_FENCE __sync ()	269	#define ECB_MEMORY_FENCE __sync ()
173	#endif	270	#endif
174	#endif	271	#endif
175		272
176	#ifndef ECB_MEMORY_FENCE	273	#ifndef ECB_MEMORY_FENCE
177	#if ECB_C11 && !defined __STDC_NO_ATOMICS__	274	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
178	/* we assume that these memory fences work on all variables/all memory accesses, */	275	/* we assume that these memory fences work on all variables/all memory accesses, */
179	/* not just C11 atomics and atomic accesses */	276	/* not just C11 atomics and atomic accesses */
180	#include <stdatomic.h>	277	#include <stdatomic.h>
181	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
182	/* any fence other than seq_cst, which isn't very efficient for us. */
183	/* Why that is, we don't know - either the C11 memory model is quite useless */
184	/* for most usages, or gcc and clang have a bug */
185	/* I currently lean towards the latter, and inefficiently implement */
186	/* all three of ecb's fences as a seq_cst fence */
187	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)	278	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		279	#define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
		280	#define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
188	#endif	281	#endif
189	#endif	282	#endif
190		283
191	#ifndef ECB_MEMORY_FENCE	284	#ifndef ECB_MEMORY_FENCE
192	#if !ECB_AVOID_PTHREADS	285	#if !ECB_AVOID_PTHREADS
…		…
212		305
213	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE	306	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
214	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	307	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
215	#endif	308	#endif
216		309
		310	#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
		311	#define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
		312	#endif
		313
217	/*****************************************************************************/	314	/*****************************************************************************/
218		315
219	#if __cplusplus	316	#if ECB_CPP
220	#define ecb_inline static inline	317	#define ecb_inline static inline
221	#elif ECB_GCC_VERSION(2,5)	318	#elif ECB_GCC_VERSION(2,5)
222	#define ecb_inline static __inline__	319	#define ecb_inline static __inline__
223	#elif ECB_C99	320	#elif ECB_C99
224	#define ecb_inline static inline	321	#define ecb_inline static inline
…		…
238		335
239	#define ECB_CONCAT_(a, b) a ## b	336	#define ECB_CONCAT_(a, b) a ## b
240	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	337	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
241	#define ECB_STRINGIFY_(a) # a	338	#define ECB_STRINGIFY_(a) # a
242	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	339	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		340	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
243		341
244	#define ecb_function_ ecb_inline	342	#define ecb_function_ ecb_inline
245		343
246	#if ECB_GCC_VERSION(3,1)	344	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
247	#define ecb_attribute(attrlist) __attribute__(attrlist)	345	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		346	#else
		347	#define ecb_attribute(attrlist)
		348	#endif
		349
		350	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_constant_p)
248	#define ecb_is_constant(expr) __builtin_constant_p (expr)	351	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		352	#else
		353	/* possible C11 impl for integral types
		354	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		355	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		356
		357	#define ecb_is_constant(expr) 0
		358	#endif
		359
		360	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_expect)
249	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	361	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		362	#else
		363	#define ecb_expect(expr,value) (expr)
		364	#endif
		365
		366	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_prefetch)
250	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	367	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
251	#else	368	#else
252	#define ecb_attribute(attrlist)
253	#define ecb_is_constant(expr) 0
254	#define ecb_expect(expr,value) (expr)
255	#define ecb_prefetch(addr,rw,locality)	369	#define ecb_prefetch(addr,rw,locality)
256	#endif	370	#endif
257		371
258	/* no emulation for ecb_decltype */	372	/* no emulation for ecb_decltype */
259	#if ECB_GCC_VERSION(4,5)	373	#if ECB_CPP11
		374	// older implementations might have problems with decltype(x)::type, work around it
		375	template<class T> struct ecb_decltype_t { typedef T type; };
260	#define ecb_decltype(x) __decltype(x)	376	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
261	#elif ECB_GCC_VERSION(3,0)	377	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
262	#define ecb_decltype(x) __typeof(x)	378	#define ecb_decltype(x) __typeof__ (x)
263	#endif	379	#endif
264		380
		381	#if _MSC_VER >= 1300
		382	#define ecb_deprecated __declspec (deprecated)
		383	#else
		384	#define ecb_deprecated ecb_attribute ((__deprecated__))
		385	#endif
		386
		387	#if _MSC_VER >= 1500
		388	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		389	#elif ECB_GCC_VERSION(4,5)
		390	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		391	#else
		392	#define ecb_deprecated_message(msg) ecb_deprecated
		393	#endif
		394
		395	#if _MSC_VER >= 1400
		396	#define ecb_noinline __declspec (noinline)
		397	#else
265	#define ecb_noinline ecb_attribute ((__noinline__))	398	#define ecb_noinline ecb_attribute ((__noinline__))
		399	#endif
		400
266	#define ecb_unused ecb_attribute ((__unused__))	401	#define ecb_unused ecb_attribute ((__unused__))
267	#define ecb_const ecb_attribute ((__const__))	402	#define ecb_const ecb_attribute ((__const__))
268	#define ecb_pure ecb_attribute ((__pure__))	403	#define ecb_pure ecb_attribute ((__pure__))
269		404
270	#if ECB_C11	405	#if ECB_C11 \|\| __IBMC_NORETURN
		406	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
271	#define ecb_noreturn _Noreturn	407	#define ecb_noreturn _Noreturn
		408	#elif ECB_CPP11
		409	#define ecb_noreturn [[noreturn]]
		410	#elif _MSC_VER >= 1200
		411	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		412	#define ecb_noreturn __declspec (noreturn)
272	#else	413	#else
273	#define ecb_noreturn ecb_attribute ((__noreturn__))	414	#define ecb_noreturn ecb_attribute ((__noreturn__))
274	#endif	415	#endif
275		416
276	#if ECB_GCC_VERSION(4,3)	417	#if ECB_GCC_VERSION(4,3)
…		…
291	/* for compatibility to the rest of the world */	432	/* for compatibility to the rest of the world */
292	#define ecb_likely(expr) ecb_expect_true (expr)	433	#define ecb_likely(expr) ecb_expect_true (expr)
293	#define ecb_unlikely(expr) ecb_expect_false (expr)	434	#define ecb_unlikely(expr) ecb_expect_false (expr)
294		435
295	/* count trailing zero bits and count # of one bits */	436	/* count trailing zero bits and count # of one bits */
296	#if ECB_GCC_VERSION(3,4)	437	#if ECB_GCC_VERSION(3,4) \
		438	\|\| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		439	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		440	&& ECB_CLANG_BUILTIN(__builtin_popcount))
297	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */	441	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
298	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	442	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
299	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	443	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
300	#define ecb_ctz32(x) __builtin_ctz (x)	444	#define ecb_ctz32(x) __builtin_ctz (x)
301	#define ecb_ctz64(x) __builtin_ctzll (x)	445	#define ecb_ctz64(x) __builtin_ctzll (x)
302	#define ecb_popcount32(x) __builtin_popcount (x)	446	#define ecb_popcount32(x) __builtin_popcount (x)
303	/* no popcountll */	447	/* no popcountll */
304	#else	448	#else
305	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	449	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
306	ecb_function_ int	450	ecb_function_ ecb_const int
307	ecb_ctz32 (uint32_t x)	451	ecb_ctz32 (uint32_t x)
308	{	452	{
		453	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		454	unsigned long r;
		455	_BitScanForward (&r, x);
		456	return (int)r;
		457	#else
309	int r = 0;	458	int r = 0;
310		459
311	x &= ~x + 1; /* this isolates the lowest bit */	460	x &= ~x + 1; /* this isolates the lowest bit */
312		461
313	#if ECB_branchless_on_i386	462	#if ECB_branchless_on_i386
…		…
323	if (x & 0xff00ff00) r += 8;	472	if (x & 0xff00ff00) r += 8;
324	if (x & 0xffff0000) r += 16;	473	if (x & 0xffff0000) r += 16;
325	#endif	474	#endif
326		475
327	return r;	476	return r;
		477	#endif
328	}	478	}
329		479
330	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	480	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
331	ecb_function_ int	481	ecb_function_ ecb_const int
332	ecb_ctz64 (uint64_t x)	482	ecb_ctz64 (uint64_t x)
333	{	483	{
		484	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		485	unsigned long r;
		486	_BitScanForward64 (&r, x);
		487	return (int)r;
		488	#else
334	int shift = x & 0xffffffffU ? 0 : 32;	489	int shift = x & 0xffffffff ? 0 : 32;
335	return ecb_ctz32 (x >> shift) + shift;	490	return ecb_ctz32 (x >> shift) + shift;
		491	#endif
336	}	492	}
337		493
338	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	494	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
339	ecb_function_ int	495	ecb_function_ ecb_const int
340	ecb_popcount32 (uint32_t x)	496	ecb_popcount32 (uint32_t x)
341	{	497	{
342	x -= (x >> 1) & 0x55555555;	498	x -= (x >> 1) & 0x55555555;
343	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	499	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
344	x = ((x >> 4) + x) & 0x0f0f0f0f;	500	x = ((x >> 4) + x) & 0x0f0f0f0f;
345	x *= 0x01010101;	501	x *= 0x01010101;
346		502
347	return x >> 24;	503	return x >> 24;
348	}	504	}
349		505
350	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	506	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
351	ecb_function_ int ecb_ld32 (uint32_t x)	507	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
352	{	508	{
		509	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		510	unsigned long r;
		511	_BitScanReverse (&r, x);
		512	return (int)r;
		513	#else
353	int r = 0;	514	int r = 0;
354		515
355	if (x >> 16) { x >>= 16; r += 16; }	516	if (x >> 16) { x >>= 16; r += 16; }
356	if (x >> 8) { x >>= 8; r += 8; }	517	if (x >> 8) { x >>= 8; r += 8; }
357	if (x >> 4) { x >>= 4; r += 4; }	518	if (x >> 4) { x >>= 4; r += 4; }
358	if (x >> 2) { x >>= 2; r += 2; }	519	if (x >> 2) { x >>= 2; r += 2; }
359	if (x >> 1) { r += 1; }	520	if (x >> 1) { r += 1; }
360		521
361	return r;	522	return r;
		523	#endif
362	}	524	}
363		525
364	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	526	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
365	ecb_function_ int ecb_ld64 (uint64_t x)	527	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
366	{	528	{
		529	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		530	unsigned long r;
		531	_BitScanReverse64 (&r, x);
		532	return (int)r;
		533	#else
367	int r = 0;	534	int r = 0;
368		535
369	if (x >> 32) { x >>= 32; r += 32; }	536	if (x >> 32) { x >>= 32; r += 32; }
370		537
371	return r + ecb_ld32 (x);	538	return r + ecb_ld32 (x);
372	}
373	#endif	539	#endif
		540	}
		541	#endif
374		542
375	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;	543	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
376	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }	544	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
377	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;	545	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
378	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }	546	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
379		547
380	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	548	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
381	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	549	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
382	{	550	{
383	return ( (x * 0x0802U & 0x22110U)	551	return ( (x * 0x0802U & 0x22110U)
384	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	552	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
385	}	553	}
386		554
387	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	555	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
388	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	556	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
389	{	557	{
390	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	558	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
391	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	559	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
392	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	560	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
393	x = ( x >> 8 ) \| ( x << 8);	561	x = ( x >> 8 ) \| ( x << 8);
394		562
395	return x;	563	return x;
396	}	564	}
397		565
398	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	566	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
399	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	567	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
400	{	568	{
401	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	569	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
402	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	570	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
403	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	571	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
404	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	572	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
407	return x;	575	return x;
408	}	576	}
409		577
410	/* popcount64 is only available on 64 bit cpus as gcc builtin */	578	/* popcount64 is only available on 64 bit cpus as gcc builtin */
411	/* so for this version we are lazy */	579	/* so for this version we are lazy */
412	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	580	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
413	ecb_function_ int	581	ecb_function_ ecb_const int
414	ecb_popcount64 (uint64_t x)	582	ecb_popcount64 (uint64_t x)
415	{	583	{
416	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	584	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
417	}	585	}
418		586
419	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;	587	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
420	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;	588	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
421	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;	589	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
422	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;	590	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
423	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;	591	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
424	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;	592	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
425	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;	593	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
426	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;	594	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
427		595
428	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }	596	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
429	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }	597	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
430	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }	598	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
431	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }	599	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
432	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }	600	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
433	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }	601	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
434	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }	602	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
435	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }	603	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
436		604
437	#if ECB_GCC_VERSION(4,3)	605	#if ECB_GCC_VERSION(4,3) \|\| (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		606	#if ECB_GCC_VERSION(4,8) \|\| ECB_CLANG_BUILTIN(__builtin_bswap16)
		607	#define ecb_bswap16(x) __builtin_bswap16 (x)
		608	#else
438	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	609	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		610	#endif
439	#define ecb_bswap32(x) __builtin_bswap32 (x)	611	#define ecb_bswap32(x) __builtin_bswap32 (x)
440	#define ecb_bswap64(x) __builtin_bswap64 (x)	612	#define ecb_bswap64(x) __builtin_bswap64 (x)
		613	#elif _MSC_VER
		614	#include <stdlib.h>
		615	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		616	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		617	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
441	#else	618	#else
442	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	619	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
443	ecb_function_ uint16_t	620	ecb_function_ ecb_const uint16_t
444	ecb_bswap16 (uint16_t x)	621	ecb_bswap16 (uint16_t x)
445	{	622	{
446	return ecb_rotl16 (x, 8);	623	return ecb_rotl16 (x, 8);
447	}	624	}
448		625
449	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	626	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
450	ecb_function_ uint32_t	627	ecb_function_ ecb_const uint32_t
451	ecb_bswap32 (uint32_t x)	628	ecb_bswap32 (uint32_t x)
452	{	629	{
453	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	630	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
454	}	631	}
455		632
456	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	633	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
457	ecb_function_ uint64_t	634	ecb_function_ ecb_const uint64_t
458	ecb_bswap64 (uint64_t x)	635	ecb_bswap64 (uint64_t x)
459	{	636	{
460	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	637	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
461	}	638	}
462	#endif	639	#endif
463		640
464	#if ECB_GCC_VERSION(4,5)	641	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
465	#define ecb_unreachable() __builtin_unreachable ()	642	#define ecb_unreachable() __builtin_unreachable ()
466	#else	643	#else
467	/* this seems to work fine, but gcc always emits a warning for it :/ */	644	/* this seems to work fine, but gcc always emits a warning for it :/ */
468	ecb_inline void ecb_unreachable (void) ecb_noreturn;	645	ecb_inline ecb_noreturn void ecb_unreachable (void);
469	ecb_inline void ecb_unreachable (void) { }	646	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
470	#endif	647	#endif
471		648
472	/* try to tell the compiler that some condition is definitely true */	649	/* try to tell the compiler that some condition is definitely true */
473	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0	650	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
474		651
475	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	652	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
476	ecb_inline unsigned char	653	ecb_inline ecb_const uint32_t
477	ecb_byteorder_helper (void)	654	ecb_byteorder_helper (void)
478	{	655	{
479	/* the union code still generates code under pressure in gcc, */	656	/* the union code still generates code under pressure in gcc, */
480	/* but less than using pointers, and always seem to */	657	/* but less than using pointers, and always seems to */
481	/* successfully return a constant. */	658	/* successfully return a constant. */
482	/* the reason why we have this horrible preprocessor mess */	659	/* the reason why we have this horrible preprocessor mess */
483	/* is to avoid it in all cases, at least on common architectures */	660	/* is to avoid it in all cases, at least on common architectures */
484	/* and yes, gcc defines __BYTE_ORDER__, g++ does not */	661	/* or when using a recent enough gcc version (>= 4.6) */
485	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64
486	return 0x44;
487	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__	662	#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
		663	\|\| ((__i386 \|\| __i386__ \|\| _M_IX86 \|\| ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64) && !__VOS__)
		664	#define ECB_LITTLE_ENDIAN 1
488	return 0x44;	665	return 0x44332211;
489	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__	666	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		667	\|\| ((__AARCH64EB__ \|\| __MIPSEB__ \|\| __ARMEB__) && !__VOS__)
		668	#define ECB_BIG_ENDIAN 1
490	retrurn 0x11;	669	return 0x11223344;
491	#else	670	#else
492	union	671	union
493	{	672	{
		673	uint8_t c[4];
494	uint32_t i;	674	uint32_t u;
495	uint8_t c;
496	} u = { 0x11223344 };	675	} u = { 0x11, 0x22, 0x33, 0x44 };
497	return u.c;	676	return u.u;
498	#endif	677	#endif
499	}	678	}
500		679
501	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	680	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
502	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	681	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
503	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	682	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
504	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	683	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
505		684
506	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	685	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
507	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	686	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
508	#else	687	#else
509	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	688	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
510	#endif	689	#endif
511		690
512	#if __cplusplus	691	#if ECB_CPP
513	template<typename T>	692	template<typename T>
514	static inline T ecb_div_rd (T val, T div)	693	static inline T ecb_div_rd (T val, T div)
515	{	694	{
516	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	695	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
517	}	696	}
…		…
534	}	713	}
535	#else	714	#else
536	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	715	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
537	#endif	716	#endif
538		717
		718	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		719	ecb_function_ ecb_const uint32_t
		720	ecb_binary16_to_binary32 (uint32_t x)
		721	{
		722	unsigned int s = (x & 0x8000) << (31 - 15);
		723	int e = (x >> 10) & 0x001f;
		724	unsigned int m = x & 0x03ff;
		725
		726	if (ecb_expect_false (e == 31))
		727	/* infinity or NaN */
		728	e = 255 - (127 - 15);
		729	else if (ecb_expect_false (!e))
		730	{
		731	if (ecb_expect_true (!m))
		732	/* zero, handled by code below by forcing e to 0 */
		733	e = 0 - (127 - 15);
		734	else
		735	{
		736	/* subnormal, renormalise */
		737	unsigned int s = 10 - ecb_ld32 (m);
		738
		739	m = (m << s) & 0x3ff; /* mask implicit bit */
		740	e -= s - 1;
		741	}
		742	}
		743
		744	/* e and m now are normalised, or zero, (or inf or nan) */
		745	e += 127 - 15;
		746
		747	return s \| (e << 23) \| (m << (23 - 10));
		748	}
		749
		750	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		751	ecb_function_ ecb_const uint16_t
		752	ecb_binary32_to_binary16 (uint32_t x)
		753	{
		754	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		755	unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		756	unsigned int m = x & 0x007fffff;
		757
		758	x &= 0x7fffffff;
		759
		760	/* if it's within range of binary16 normals, use fast path */
		761	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		762	{
		763	/* mantissa round-to-even */
		764	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		765
		766	/* handle overflow */
		767	if (ecb_expect_false (m >= 0x00800000))
		768	{
		769	m >>= 1;
		770	e += 1;
		771	}
		772
		773	return s \| (e << 10) \| (m >> (23 - 10));
		774	}
		775
		776	/* handle large numbers and infinity */
		777	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		778	return s \| 0x7c00;
		779
		780	/* handle zero, subnormals and small numbers */
		781	if (ecb_expect_true (x < 0x38800000))
		782	{
		783	/* zero */
		784	if (ecb_expect_true (!x))
		785	return s;
		786
		787	/* handle subnormals */
		788
		789	/* too small, will be zero */
		790	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		791	return s;
		792
		793	m \|= 0x00800000; /* make implicit bit explicit */
		794
		795	/* very tricky - we need to round to the nearest e (+10) bit value */
		796	{
		797	unsigned int bits = 14 - e;
		798	unsigned int half = (1 << (bits - 1)) - 1;
		799	unsigned int even = (m >> bits) & 1;
		800
		801	/* if this overflows, we will end up with a normalised number */
		802	m = (m + half + even) >> bits;
		803	}
		804
		805	return s \| m;
		806	}
		807
		808	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		809	m >>= 13;
		810
		811	return s \| 0x7c00 \| m \| !m;
		812	}
		813
539	/*******************************************************************************/	814	/*******************************************************************************/
540	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */	815	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
541		816
542	/* basically, everything uses "ieee pure-endian" floating point numbers */	817	/* basically, everything uses "ieee pure-endian" floating point numbers */
543	/* the only noteworthy exception is ancient armle, which uses order 43218765 */	818	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
544	#if 0 \	819	#if 0 \
545	\|\| __i386 \|\| __i386__ \	820	\|\| __i386 \|\| __i386__ \
546	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \	821	\|\| ECB_GCC_AMD64 \
547	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \	822	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
548	\|\| defined __arm__ && defined __ARM_EABI__ \
549	\|\| defined __s390__ \|\| defined __s390x__ \	823	\|\| defined __s390__ \|\| defined __s390x__ \
550	\|\| defined __mips__ \	824	\|\| defined __mips__ \
551	\|\| defined __alpha__ \	825	\|\| defined __alpha__ \
552	\|\| defined __hppa__ \	826	\|\| defined __hppa__ \
553	\|\| defined __ia64__ \	827	\|\| defined __ia64__ \
		828	\|\| defined __m68k__ \
		829	\|\| defined __m88k__ \
		830	\|\| defined __sh__ \
554	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64	831	\|\| defined _M_IX86 \|\| defined ECB_MSVC_AMD64 \|\| defined _M_IA64 \
		832	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__)) \
		833	\|\| defined __aarch64__
555	#define ECB_STDFP 1	834	#define ECB_STDFP 1
556	#include <string.h> /* for memcpy */	835	#include <string.h> /* for memcpy */
557	#else	836	#else
558	#define ECB_STDFP 0	837	#define ECB_STDFP 0
559	#include <math.h> /* for frexp, ldexp */
560	#endif	838	#endif
561		839
562	#ifndef ECB_NO_LIBM	840	#ifndef ECB_NO_LIBM
563		841
		842	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		843
		844	/* only the oldest of old doesn't have this one. solaris. */
		845	#ifdef INFINITY
		846	#define ECB_INFINITY INFINITY
		847	#else
		848	#define ECB_INFINITY HUGE_VAL
		849	#endif
		850
		851	#ifdef NAN
		852	#define ECB_NAN NAN
		853	#else
		854	#define ECB_NAN ECB_INFINITY
		855	#endif
		856
		857	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
		858	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		859	#define ecb_frexpf(x,e) frexpf ((x), (e))
		860	#else
		861	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		862	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		863	#endif
		864
564	/* convert a float to ieee single/binary32 */	865	/* convert a float to ieee single/binary32 */
565	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;	866	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
566	ecb_function_ uint32_t	867	ecb_function_ ecb_const uint32_t
567	ecb_float_to_binary32 (float x)	868	ecb_float_to_binary32 (float x)
568	{	869	{
569	uint32_t r;	870	uint32_t r;
570		871
571	#if ECB_STDFP	872	#if ECB_STDFP
…		…
578	if (x == 0e0f ) return 0x00000000U;	879	if (x == 0e0f ) return 0x00000000U;
579	if (x > +3.40282346638528860e+38f) return 0x7f800000U;	880	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
580	if (x < -3.40282346638528860e+38f) return 0xff800000U;	881	if (x < -3.40282346638528860e+38f) return 0xff800000U;
581	if (x != x ) return 0x7fbfffffU;	882	if (x != x ) return 0x7fbfffffU;
582		883
583	m = frexpf (x, &e) * 0x1000000U;	884	m = ecb_frexpf (x, &e) * 0x1000000U;
584		885
585	r = m & 0x80000000U;	886	r = m & 0x80000000U;
586		887
587	if (r)	888	if (r)
588	m = -m;	889	m = -m;
…		…
600		901
601	return r;	902	return r;
602	}	903	}
603		904
604	/* converts an ieee single/binary32 to a float */	905	/* converts an ieee single/binary32 to a float */
605	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;	906	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
606	ecb_function_ float	907	ecb_function_ ecb_const float
607	ecb_binary32_to_float (uint32_t x)	908	ecb_binary32_to_float (uint32_t x)
608	{	909	{
609	float r;	910	float r;
610		911
611	#if ECB_STDFP	912	#if ECB_STDFP
…		…
621	x \|= 0x800000U;	922	x \|= 0x800000U;
622	else	923	else
623	e = 1;	924	e = 1;
624		925
625	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /	926	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
626	r = ldexpf (x * (0.5f / 0x800000U), e - 126);	927	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
627		928
628	r = neg ? -r : r;	929	r = neg ? -r : r;
629	#endif	930	#endif
630		931
631	return r;	932	return r;
632	}	933	}
633		934
634	/* convert a double to ieee double/binary64 */	935	/* convert a double to ieee double/binary64 */
635	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;	936	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
636	ecb_function_ uint64_t	937	ecb_function_ ecb_const uint64_t
637	ecb_double_to_binary64 (double x)	938	ecb_double_to_binary64 (double x)
638	{	939	{
639	uint64_t r;	940	uint64_t r;
640		941
641	#if ECB_STDFP	942	#if ECB_STDFP
…		…
670		971
671	return r;	972	return r;
672	}	973	}
673		974
674	/* converts an ieee double/binary64 to a double */	975	/* converts an ieee double/binary64 to a double */
675	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;	976	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
676	ecb_function_ double	977	ecb_function_ ecb_const double
677	ecb_binary64_to_double (uint64_t x)	978	ecb_binary64_to_double (uint64_t x)
678	{	979	{
679	double r;	980	double r;
680		981
681	#if ECB_STDFP	982	#if ECB_STDFP
…		…
699	#endif	1000	#endif
700		1001
701	return r;	1002	return r;
702	}	1003	}
703		1004
704	#endif	1005	/* convert a float to ieee half/binary16 */
		1006	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1007	ecb_function_ ecb_const uint16_t
		1008	ecb_float_to_binary16 (float x)
		1009	{
		1010	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1011	}
705		1012
706	#endif	1013	/* convert an ieee half/binary16 to float */
		1014	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1015	ecb_function_ ecb_const float
		1016	ecb_binary16_to_float (uint16_t x)
		1017	{
		1018	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1019	}
707		1020
		1021	#endif
		1022
		1023	#endif
		1024

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Comparing libecb/ecb.h (file contents): Revision 1.109 by root, Fri Jun 29 14:05:50 2012 UTC vs. Revision 1.179 by root, Sat Dec 28 08:01:05 2019 UTC

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Comparing libecb/ecb.h (file contents):
Revision 1.109 by root, Fri Jun 29 14:05:50 2012 UTC vs.
Revision 1.179 by root, Sat Dec 28 08:01:05 2019 UTC