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

Comparing libecb/ecb.h (file contents):
Revision 1.124 by root, Tue Dec 3 15:35:14 2013 UTC vs.
Revision 1.190 by root, Mon Jun 21 21:36:13 2021 UTC

…		…
1	/*	1	/*
2	* libecb - http://software.schmorp.de/pkg/libecb	2	* libecb - http://software.schmorp.de/pkg/libecb
3	*	3	*
4	* Copyright (©) 2009-2013 Marc Alexander Lehmann <libecb@schmorp.de>	4	* Copyright (©) 2009-2015,2018-2021 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 0x00010003	45	#define ECB_VERSION 0x00010009
35		46
36	#ifdef _WIN32	47	#include <string.h> /* for memcpy */
		48
		49	#if defined (_WIN32) && !defined (__MINGW32__)
37	typedef signed char int8_t;	50	typedef signed char int8_t;
38	typedef unsigned char uint8_t;	51	typedef unsigned char uint8_t;
		52	typedef signed char int_fast8_t;
		53	typedef unsigned char uint_fast8_t;
39	typedef signed short int16_t;	54	typedef signed short int16_t;
40	typedef unsigned short uint16_t;	55	typedef unsigned short uint16_t;
		56	typedef signed int int_fast16_t;
		57	typedef unsigned int uint_fast16_t;
41	typedef signed int int32_t;	58	typedef signed int int32_t;
42	typedef unsigned int uint32_t;	59	typedef unsigned int uint32_t;
		60	typedef signed int int_fast32_t;
		61	typedef unsigned int uint_fast32_t;
43	#if __GNUC__	62	#if __GNUC__
44	typedef signed long long int64_t;	63	typedef signed long long int64_t;
45	typedef unsigned long long uint64_t;	64	typedef unsigned long long uint64_t;
46	#else /* _MSC_VER \|\| __BORLANDC__ */	65	#else /* _MSC_VER \|\| __BORLANDC__ */
47	typedef signed __int64 int64_t;	66	typedef signed __int64 int64_t;
48	typedef unsigned __int64 uint64_t;	67	typedef unsigned __int64 uint64_t;
49	#endif	68	#endif
		69	typedef int64_t int_fast64_t;
		70	typedef uint64_t uint_fast64_t;
50	#ifdef _WIN64	71	#ifdef _WIN64
51	#define ECB_PTRSIZE 8	72	#define ECB_PTRSIZE 8
52	typedef uint64_t uintptr_t;	73	typedef uint64_t uintptr_t;
53	typedef int64_t intptr_t;	74	typedef int64_t intptr_t;
54	#else	75	#else
…		…
56	typedef uint32_t uintptr_t;	77	typedef uint32_t uintptr_t;
57	typedef int32_t intptr_t;	78	typedef int32_t intptr_t;
58	#endif	79	#endif
59	#else	80	#else
60	#include <inttypes.h>	81	#include <inttypes.h>
61	#if UINTMAX_MAX > 0xffffffffU	82	#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
62	#define ECB_PTRSIZE 8	83	#define ECB_PTRSIZE 8
63	#else	84	#else
64	#define ECB_PTRSIZE 4	85	#define ECB_PTRSIZE 4
65	#endif	86	#endif
66	#endif	87	#endif
67		88
		89	#define ECB_GCC_AMD64 (__amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__)
		90	#define ECB_MSVC_AMD64 (_M_AMD64 \|\| _M_X64)
		91
		92	#ifndef ECB_OPTIMIZE_SIZE
		93	#if __OPTIMIZE_SIZE__
		94	#define ECB_OPTIMIZE_SIZE 1
		95	#else
		96	#define ECB_OPTIMIZE_SIZE 0
		97	#endif
		98	#endif
		99
68	/* work around x32 idiocy by defining proper macros */	100	/* work around x32 idiocy by defining proper macros */
69	#if __x86_64 \|\| _M_AMD64	101	#if ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64
70	#if _ILP32	102	#if _ILP32
71	#define ECB_AMD64_X32 1	103	#define ECB_AMD64_X32 1
72	#else	104	#else
73	#define ECB_AMD64 1	105	#define ECB_AMD64 1
74	#endif	106	#endif
		107	#endif
		108
		109	#if ECB_PTRSIZE >= 8 \|\| ECB_AMD64_X32
		110	#define ECB_64BIT_NATIVE 1
		111	#else
		112	#define ECB_64BIT_NATIVE 0
75	#endif	113	#endif
76		114
77	/* many compilers define _GNUC_ to some versions but then only implement	115	/* many compilers define _GNUC_ to some versions but then only implement
78	* what their idiot authors think are the "more important" extensions,	116	* what their idiot authors think are the "more important" extensions,
79	* causing enormous grief in return for some better fake benchmark numbers.	117	* causing enormous grief in return for some better fake benchmark numbers.
80	* or so.	118	* or so.
81	* we try to detect these and simply assume they are not gcc - if they have	119	* we try to detect these and simply assume they are not gcc - if they have
82	* an issue with that they should have done it right in the first place.	120	* an issue with that they should have done it right in the first place.
83	*/	121	*/
84	#ifndef ECB_GCC_VERSION
85	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__	122	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__
86	#define ECB_GCC_VERSION(major,minor) 0	123	#define ECB_GCC_VERSION(major,minor) 0
87	#else	124	#else
88	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	125	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
89	#endif	126	#endif
90	#endif
91		127
92	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */	128	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
93	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	129
94	#define ECB_C11 (__STDC_VERSION__ >= 201112L)	130	#if __clang__ && defined __has_builtin
		131	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		132	#else
		133	#define ECB_CLANG_BUILTIN(x) 0
		134	#endif
		135
		136	#if __clang__ && defined __has_extension
		137	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		138	#else
		139	#define ECB_CLANG_EXTENSION(x) 0
		140	#endif
		141
95	#define ECB_CPP (__cplusplus+0)	142	#define ECB_CPP (__cplusplus+0)
96	#define ECB_CPP11 (__cplusplus >= 201103L)	143	#define ECB_CPP11 (__cplusplus >= 201103L)
		144	#define ECB_CPP14 (__cplusplus >= 201402L)
		145	#define ECB_CPP17 (__cplusplus >= 201703L)
		146
		147	#if ECB_CPP
		148	#define ECB_C 0
		149	#define ECB_STDC_VERSION 0
		150	#else
		151	#define ECB_C 1
		152	#define ECB_STDC_VERSION __STDC_VERSION__
		153	#endif
		154
		155	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		156	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		157	#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
97		158
98	#if ECB_CPP	159	#if ECB_CPP
99	#define ECB_EXTERN_C extern "C"	160	#define ECB_EXTERN_C extern "C"
100	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {	161	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
101	#define ECB_EXTERN_C_END }	162	#define ECB_EXTERN_C_END }
…		…
116		177
117	#if ECB_NO_SMP	178	#if ECB_NO_SMP
118	#define ECB_MEMORY_FENCE do { } while (0)	179	#define ECB_MEMORY_FENCE do { } while (0)
119	#endif	180	#endif
120		181
		182	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
		183	#if __xlC__ && ECB_CPP
		184	#include <builtins.h>
		185	#endif
		186
		187	#if 1400 <= _MSC_VER
		188	#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
		189	#endif
		190
121	#ifndef ECB_MEMORY_FENCE	191	#ifndef ECB_MEMORY_FENCE
122	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	192	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
		193	#define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
123	#if __i386 \|\| __i386__	194	#if __i386 \|\| __i386__
124	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	195	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
125	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	196	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
126	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	197	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
127	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	198	#elif ECB_GCC_AMD64
128	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	199	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
129	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	200	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
130	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	201	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
131	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	202	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
132	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	203	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		204	#elif defined __ARM_ARCH_2__ \
		205	\|\| defined __ARM_ARCH_3__ \|\| defined __ARM_ARCH_3M__ \
		206	\|\| defined __ARM_ARCH_4__ \|\| defined __ARM_ARCH_4T__ \
		207	\|\| defined __ARM_ARCH_5__ \|\| defined __ARM_ARCH_5E__ \
		208	\|\| defined __ARM_ARCH_5T__ \|\| defined __ARM_ARCH_5TE__ \
		209	\|\| defined __ARM_ARCH_5TEJ__
		210	/* should not need any, unless running old code on newer cpu - arm doesn't support that */
133	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \	211	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
134	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	212	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__ \
		213	\|\| defined __ARM_ARCH_6T2__
135	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")	214	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
136	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \	215	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
137	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	216	\|\| defined __ARM_ARCH_7R__ \|\| defined __ARM_ARCH_7M__
138	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	217	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		218	#elif __aarch64__
		219	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
139	#elif (__sparc \|\| __sparc__) && !__sparcv8	220	#elif (__sparc \|\| __sparc__) && !(__sparc_v8__ \|\| defined __sparcv8)
140	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")	221	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
141	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	222	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
142	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	223	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
143	#elif defined __s390__ \|\| defined __s390x__	224	#elif defined __s390__ \|\| defined __s390x__
144	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	225	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
…		…
165		246
166	#ifndef ECB_MEMORY_FENCE	247	#ifndef ECB_MEMORY_FENCE
167	#if ECB_GCC_VERSION(4,7)	248	#if ECB_GCC_VERSION(4,7)
168	/* see comment below (stdatomic.h) about the C11 memory model. */	249	/* see comment below (stdatomic.h) about the C11 memory model. */
169	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)	250	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		251	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		252	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		253	#undef ECB_MEMORY_FENCE_RELAXED
		254	#define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
170		255
171	/* The __has_feature syntax from clang is so misdesigned that we cannot use it	256	#elif ECB_CLANG_EXTENSION(c_atomic)
172	* without risking compile time errors with other compilers. We could
173	* define our own ecb_clang_has_feature, but I just can't be bothered to work
174	* around this shit time and again.
175	* #elif defined __clang && __has_feature (cxx_atomic)
176	* // see comment below (stdatomic.h) about the C11 memory model.	257	/* see comment below (stdatomic.h) about the C11 memory model. */
177	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)	258	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
178	*/	259	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		260	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		261	#undef ECB_MEMORY_FENCE_RELAXED
		262	#define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
179		263
180	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	264	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
181	#define ECB_MEMORY_FENCE __sync_synchronize ()	265	#define ECB_MEMORY_FENCE __sync_synchronize ()
		266	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		267	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		268	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		269	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		270	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		271	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
182	#elif _MSC_VER >= 1400 /* VC++ 2005 */	272	#elif _MSC_VER >= 1400 /* VC++ 2005 */
183	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	273	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
184	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	274	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
185	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	275	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
186	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	276	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
187	#elif defined _WIN32	277	#elif defined _WIN32
188	#include <WinNT.h>	278	#include <WinNT.h>
189	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */	279	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
190	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	280	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
191	#include <mbarrier.h>	281	#include <mbarrier.h>
192	#define ECB_MEMORY_FENCE __machine_rw_barrier ()	282	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
193	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()	283	#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
194	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()	284	#define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
		285	#define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
195	#elif __xlC__	286	#elif __xlC__
196	#define ECB_MEMORY_FENCE __sync ()	287	#define ECB_MEMORY_FENCE __sync ()
197	#endif	288	#endif
198	#endif	289	#endif
199		290
200	#ifndef ECB_MEMORY_FENCE	291	#ifndef ECB_MEMORY_FENCE
201	#if ECB_C11 && !defined __STDC_NO_ATOMICS__	292	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
202	/* we assume that these memory fences work on all variables/all memory accesses, */	293	/* we assume that these memory fences work on all variables/all memory accesses, */
203	/* not just C11 atomics and atomic accesses */	294	/* not just C11 atomics and atomic accesses */
204	#include <stdatomic.h>	295	#include <stdatomic.h>
205	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
206	/* any fence other than seq_cst, which isn't very efficient for us. */
207	/* Why that is, we don't know - either the C11 memory model is quite useless */
208	/* for most usages, or gcc and clang have a bug */
209	/* I currently lean towards the latter, and inefficiently implement */
210	/* all three of ecb's fences as a seq_cst fence */
211	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)	296	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		297	#define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
		298	#define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
212	#endif	299	#endif
213	#endif	300	#endif
214		301
215	#ifndef ECB_MEMORY_FENCE	302	#ifndef ECB_MEMORY_FENCE
216	#if !ECB_AVOID_PTHREADS	303	#if !ECB_AVOID_PTHREADS
…		…
236		323
237	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE	324	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
238	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	325	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
239	#endif	326	#endif
240		327
		328	#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
		329	#define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
		330	#endif
		331
241	/*****************************************************************************/	332	/*****************************************************************************/
242		333
243	#if __cplusplus	334	#if ECB_CPP
244	#define ecb_inline static inline	335	#define ecb_inline static inline
245	#elif ECB_GCC_VERSION(2,5)	336	#elif ECB_GCC_VERSION(2,5)
246	#define ecb_inline static __inline__	337	#define ecb_inline static __inline__
247	#elif ECB_C99	338	#elif ECB_C99
248	#define ecb_inline static inline	339	#define ecb_inline static inline
…		…
262		353
263	#define ECB_CONCAT_(a, b) a ## b	354	#define ECB_CONCAT_(a, b) a ## b
264	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	355	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
265	#define ECB_STRINGIFY_(a) # a	356	#define ECB_STRINGIFY_(a) # a
266	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	357	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		358	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
267		359
268	#define ecb_function_ ecb_inline	360	#define ecb_function_ ecb_inline
269		361
270	#if ECB_GCC_VERSION(3,1)	362	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
271	#define ecb_attribute(attrlist) __attribute__(attrlist)	363	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		364	#else
		365	#define ecb_attribute(attrlist)
		366	#endif
		367
		368	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_constant_p)
272	#define ecb_is_constant(expr) __builtin_constant_p (expr)	369	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		370	#else
		371	/* possible C11 impl for integral types
		372	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		373	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		374
		375	#define ecb_is_constant(expr) 0
		376	#endif
		377
		378	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_expect)
273	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	379	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		380	#else
		381	#define ecb_expect(expr,value) (expr)
		382	#endif
		383
		384	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_prefetch)
274	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	385	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
275	#else	386	#else
276	#define ecb_attribute(attrlist)
277	#define ecb_is_constant(expr) 0
278	#define ecb_expect(expr,value) (expr)
279	#define ecb_prefetch(addr,rw,locality)	387	#define ecb_prefetch(addr,rw,locality)
280	#endif	388	#endif
281		389
282	/* no emulation for ecb_decltype */	390	/* no emulation for ecb_decltype */
283	#if ECB_GCC_VERSION(4,5)	391	#if ECB_CPP11
		392	// older implementations might have problems with decltype(x)::type, work around it
		393	template<class T> struct ecb_decltype_t { typedef T type; };
284	#define ecb_decltype(x) __decltype(x)	394	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
285	#elif ECB_GCC_VERSION(3,0)	395	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
286	#define ecb_decltype(x) __typeof(x)	396	#define ecb_decltype(x) __typeof__ (x)
287	#endif	397	#endif
288		398
		399	#if _MSC_VER >= 1300
		400	#define ecb_deprecated __declspec (deprecated)
		401	#else
		402	#define ecb_deprecated ecb_attribute ((__deprecated__))
		403	#endif
		404
		405	#if _MSC_VER >= 1500
		406	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		407	#elif ECB_GCC_VERSION(4,5)
		408	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		409	#else
		410	#define ecb_deprecated_message(msg) ecb_deprecated
		411	#endif
		412
		413	#if _MSC_VER >= 1400
		414	#define ecb_noinline __declspec (noinline)
		415	#else
289	#define ecb_noinline ecb_attribute ((__noinline__))	416	#define ecb_noinline ecb_attribute ((__noinline__))
		417	#endif
		418
290	#define ecb_unused ecb_attribute ((__unused__))	419	#define ecb_unused ecb_attribute ((__unused__))
291	#define ecb_const ecb_attribute ((__const__))	420	#define ecb_const ecb_attribute ((__const__))
292	#define ecb_pure ecb_attribute ((__pure__))	421	#define ecb_pure ecb_attribute ((__pure__))
293		422
294	#if ECB_C11	423	#if ECB_C11 \|\| __IBMC_NORETURN
		424	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
295	#define ecb_noreturn _Noreturn	425	#define ecb_noreturn _Noreturn
		426	#elif ECB_CPP11
		427	#define ecb_noreturn [[noreturn]]
		428	#elif _MSC_VER >= 1200
		429	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		430	#define ecb_noreturn __declspec (noreturn)
296	#else	431	#else
297	#define ecb_noreturn ecb_attribute ((__noreturn__))	432	#define ecb_noreturn ecb_attribute ((__noreturn__))
298	#endif	433	#endif
299		434
300	#if ECB_GCC_VERSION(4,3)	435	#if ECB_GCC_VERSION(4,3)
…		…
315	/* for compatibility to the rest of the world */	450	/* for compatibility to the rest of the world */
316	#define ecb_likely(expr) ecb_expect_true (expr)	451	#define ecb_likely(expr) ecb_expect_true (expr)
317	#define ecb_unlikely(expr) ecb_expect_false (expr)	452	#define ecb_unlikely(expr) ecb_expect_false (expr)
318		453
319	/* count trailing zero bits and count # of one bits */	454	/* count trailing zero bits and count # of one bits */
320	#if ECB_GCC_VERSION(3,4)	455	#if ECB_GCC_VERSION(3,4) \
		456	\|\| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		457	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		458	&& ECB_CLANG_BUILTIN(__builtin_popcount))
321	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */	459	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
322	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	460	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
323	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	461	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
324	#define ecb_ctz32(x) __builtin_ctz (x)	462	#define ecb_ctz32(x) __builtin_ctz (x)
325	#define ecb_ctz64(x) __builtin_ctzll (x)	463	#define ecb_ctz64(x) __builtin_ctzll (x)
326	#define ecb_popcount32(x) __builtin_popcount (x)	464	#define ecb_popcount32(x) __builtin_popcount (x)
327	/* no popcountll */	465	/* no popcountll */
328	#else	466	#else
329	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	467	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
330	ecb_function_ int	468	ecb_function_ ecb_const int
331	ecb_ctz32 (uint32_t x)	469	ecb_ctz32 (uint32_t x)
332	{	470	{
		471	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		472	unsigned long r;
		473	_BitScanForward (&r, x);
		474	return (int)r;
		475	#else
333	int r = 0;	476	int r = 0;
334		477
335	x &= ~x + 1; /* this isolates the lowest bit */	478	x &= ~x + 1; /* this isolates the lowest bit */
336		479
337	#if ECB_branchless_on_i386	480	#if ECB_branchless_on_i386
…		…
347	if (x & 0xff00ff00) r += 8;	490	if (x & 0xff00ff00) r += 8;
348	if (x & 0xffff0000) r += 16;	491	if (x & 0xffff0000) r += 16;
349	#endif	492	#endif
350		493
351	return r;	494	return r;
		495	#endif
352	}	496	}
353		497
354	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	498	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
355	ecb_function_ int	499	ecb_function_ ecb_const int
356	ecb_ctz64 (uint64_t x)	500	ecb_ctz64 (uint64_t x)
357	{	501	{
		502	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		503	unsigned long r;
		504	_BitScanForward64 (&r, x);
		505	return (int)r;
		506	#else
358	int shift = x & 0xffffffffU ? 0 : 32;	507	int shift = x & 0xffffffff ? 0 : 32;
359	return ecb_ctz32 (x >> shift) + shift;	508	return ecb_ctz32 (x >> shift) + shift;
		509	#endif
360	}	510	}
361		511
362	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	512	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
363	ecb_function_ int	513	ecb_function_ ecb_const int
364	ecb_popcount32 (uint32_t x)	514	ecb_popcount32 (uint32_t x)
365	{	515	{
366	x -= (x >> 1) & 0x55555555;	516	x -= (x >> 1) & 0x55555555;
367	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	517	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
368	x = ((x >> 4) + x) & 0x0f0f0f0f;	518	x = ((x >> 4) + x) & 0x0f0f0f0f;
369	x *= 0x01010101;	519	x *= 0x01010101;
370		520
371	return x >> 24;	521	return x >> 24;
372	}	522	}
373		523
374	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	524	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
375	ecb_function_ int ecb_ld32 (uint32_t x)	525	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
376	{	526	{
		527	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		528	unsigned long r;
		529	_BitScanReverse (&r, x);
		530	return (int)r;
		531	#else
377	int r = 0;	532	int r = 0;
378		533
379	if (x >> 16) { x >>= 16; r += 16; }	534	if (x >> 16) { x >>= 16; r += 16; }
380	if (x >> 8) { x >>= 8; r += 8; }	535	if (x >> 8) { x >>= 8; r += 8; }
381	if (x >> 4) { x >>= 4; r += 4; }	536	if (x >> 4) { x >>= 4; r += 4; }
382	if (x >> 2) { x >>= 2; r += 2; }	537	if (x >> 2) { x >>= 2; r += 2; }
383	if (x >> 1) { r += 1; }	538	if (x >> 1) { r += 1; }
384		539
385	return r;	540	return r;
		541	#endif
386	}	542	}
387		543
388	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	544	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
389	ecb_function_ int ecb_ld64 (uint64_t x)	545	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
390	{	546	{
		547	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		548	unsigned long r;
		549	_BitScanReverse64 (&r, x);
		550	return (int)r;
		551	#else
391	int r = 0;	552	int r = 0;
392		553
393	if (x >> 32) { x >>= 32; r += 32; }	554	if (x >> 32) { x >>= 32; r += 32; }
394		555
395	return r + ecb_ld32 (x);	556	return r + ecb_ld32 (x);
396	}
397	#endif	557	#endif
		558	}
		559	#endif
398		560
399	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;	561	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
400	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }	562	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
401	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;	563	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
402	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }	564	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
403		565
404	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	566	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
405	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	567	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
406	{	568	{
407	return ( (x * 0x0802U & 0x22110U)	569	return ( (x * 0x0802U & 0x22110U)
408	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	570	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
409	}	571	}
410		572
411	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	573	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
412	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	574	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
413	{	575	{
414	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	576	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
415	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	577	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
416	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	578	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
417	x = ( x >> 8 ) \| ( x << 8);	579	x = ( x >> 8 ) \| ( x << 8);
418		580
419	return x;	581	return x;
420	}	582	}
421		583
422	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	584	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
423	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	585	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
424	{	586	{
425	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	587	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
426	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	588	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
427	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	589	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
428	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	590	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
431	return x;	593	return x;
432	}	594	}
433		595
434	/* popcount64 is only available on 64 bit cpus as gcc builtin */	596	/* popcount64 is only available on 64 bit cpus as gcc builtin */
435	/* so for this version we are lazy */	597	/* so for this version we are lazy */
436	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	598	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
437	ecb_function_ int	599	ecb_function_ ecb_const int
438	ecb_popcount64 (uint64_t x)	600	ecb_popcount64 (uint64_t x)
439	{	601	{
440	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	602	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
441	}	603	}
442		604
443	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;	605	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
444	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;	606	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
445	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;	607	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
446	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;	608	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
447	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;	609	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
448	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;	610	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
449	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;	611	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
450	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;	612	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
451		613
452	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }	614	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
453	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }	615	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
454	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }	616	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
455	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }	617	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
456	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }	618	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
457	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }	619	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
458	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }	620	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
459	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }	621	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
460		622
461	#if ECB_GCC_VERSION(4,3)	623	#if ECB_CPP
		624
		625	inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
		626	inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
		627	inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
		628	inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
		629
		630	inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
		631	inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
		632	inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
		633	inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
		634
		635	inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
		636	inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
		637	inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
		638	inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
		639
		640	inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
		641	inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
		642	inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
		643	inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
		644
		645	inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
		646	inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
		647	inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
		648
		649	inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
		650	inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
		651	inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
		652	inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
		653
		654	inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
		655	inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
		656	inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
		657	inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
		658
		659	#endif
		660
		661	#if ECB_GCC_VERSION(4,3) \|\| (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		662	#if ECB_GCC_VERSION(4,8) \|\| ECB_CLANG_BUILTIN(__builtin_bswap16)
		663	#define ecb_bswap16(x) __builtin_bswap16 (x)
		664	#else
462	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	665	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		666	#endif
463	#define ecb_bswap32(x) __builtin_bswap32 (x)	667	#define ecb_bswap32(x) __builtin_bswap32 (x)
464	#define ecb_bswap64(x) __builtin_bswap64 (x)	668	#define ecb_bswap64(x) __builtin_bswap64 (x)
		669	#elif _MSC_VER
		670	#include <stdlib.h>
		671	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		672	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		673	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
465	#else	674	#else
466	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	675	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
467	ecb_function_ uint16_t	676	ecb_function_ ecb_const uint16_t
468	ecb_bswap16 (uint16_t x)	677	ecb_bswap16 (uint16_t x)
469	{	678	{
470	return ecb_rotl16 (x, 8);	679	return ecb_rotl16 (x, 8);
471	}	680	}
472		681
473	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	682	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
474	ecb_function_ uint32_t	683	ecb_function_ ecb_const uint32_t
475	ecb_bswap32 (uint32_t x)	684	ecb_bswap32 (uint32_t x)
476	{	685	{
477	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	686	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
478	}	687	}
479		688
480	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	689	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
481	ecb_function_ uint64_t	690	ecb_function_ ecb_const uint64_t
482	ecb_bswap64 (uint64_t x)	691	ecb_bswap64 (uint64_t x)
483	{	692	{
484	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	693	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
485	}	694	}
486	#endif	695	#endif
487		696
488	#if ECB_GCC_VERSION(4,5)	697	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
489	#define ecb_unreachable() __builtin_unreachable ()	698	#define ecb_unreachable() __builtin_unreachable ()
490	#else	699	#else
491	/* this seems to work fine, but gcc always emits a warning for it :/ */	700	/* this seems to work fine, but gcc always emits a warning for it :/ */
492	ecb_inline void ecb_unreachable (void) ecb_noreturn;	701	ecb_inline ecb_noreturn void ecb_unreachable (void);
493	ecb_inline void ecb_unreachable (void) { }	702	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
494	#endif	703	#endif
495		704
496	/* try to tell the compiler that some condition is definitely true */	705	/* try to tell the compiler that some condition is definitely true */
497	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0	706	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
498		707
499	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	708	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
500	ecb_inline unsigned char	709	ecb_inline ecb_const uint32_t
501	ecb_byteorder_helper (void)	710	ecb_byteorder_helper (void)
502	{	711	{
503	/* the union code still generates code under pressure in gcc, */	712	/* the union code still generates code under pressure in gcc, */
504	/* but less than using pointers, and always seems to */	713	/* but less than using pointers, and always seems to */
505	/* successfully return a constant. */	714	/* successfully return a constant. */
506	/* the reason why we have this horrible preprocessor mess */	715	/* the reason why we have this horrible preprocessor mess */
507	/* is to avoid it in all cases, at least on common architectures */	716	/* is to avoid it in all cases, at least on common architectures */
508	/* or when using a recent enough gcc version (>= 4.6) */	717	/* or when using a recent enough gcc version (>= 4.6) */
509	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64
510	return 0x44;
511	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__	718	#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
		719	\|\| ((__i386 \|\| __i386__ \|\| _M_IX86 \|\| ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64) && !__VOS__)
		720	#define ECB_LITTLE_ENDIAN 1
512	return 0x44;	721	return 0x44332211;
513	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__	722	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		723	\|\| ((__AARCH64EB__ \|\| __MIPSEB__ \|\| __ARMEB__) && !__VOS__)
		724	#define ECB_BIG_ENDIAN 1
514	return 0x11;	725	return 0x11223344;
515	#else	726	#else
516	union	727	union
517	{	728	{
		729	uint8_t c[4];
518	uint32_t i;	730	uint32_t u;
519	uint8_t c;
520	} u = { 0x11223344 };	731	} u = { 0x11, 0x22, 0x33, 0x44 };
521	return u.c;	732	return u.u;
522	#endif	733	#endif
523	}	734	}
524		735
525	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	736	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
526	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	737	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
527	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	738	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
528	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	739	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
		740
		741	/*****************************************************************************/
		742	/* unaligned load/store */
		743
		744	ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
		745	ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
		746	ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
		747
		748	ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
		749	ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
		750	ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
		751
		752	ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		753	ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		754	ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		755
		756	ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
		757	ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
		758	ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
		759
		760	ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
		761	ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
		762	ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
		763
		764	ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
		765	ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
		766	ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
		767
		768	ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
		769	ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
		770	ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
		771
		772	ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
		773	ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
		774	ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
		775
		776	ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
		777	ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
		778	ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
		779
		780	ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
		781	ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
		782	ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
		783
		784	#if ECB_CPP
		785
		786	inline uint8_t ecb_bswap (uint8_t v) { return v; }
		787	inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
		788	inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
		789	inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
		790
		791	template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
		792	template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
		793	template<typename T> inline T ecb_peek (const void ptr) { return (const T *)ptr; }
		794	template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
		795	template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
		796	template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
		797	template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
		798	template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
		799
		800	template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
		801	template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
		802	template<typename T> inline void ecb_poke (void ptr, T v) { (T *)ptr = v; }
		803	template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
		804	template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
		805	template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
		806	template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
		807	template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
		808
		809	#endif
		810
		811	/*****************************************************************************/
		812	/* division */
529		813
530	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	814	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
		815	/* C99 tightened the definition of %, so we can use a more efficient version */
531	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	816	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
532	#else	817	#else
533	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	818	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
534	#endif	819	#endif
535		820
536	#if __cplusplus	821	#if ECB_CPP
537	template<typename T>	822	template<typename T>
538	static inline T ecb_div_rd (T val, T div)	823	static inline T ecb_div_rd (T val, T div)
539	{	824	{
540	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	825	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
541	}	826	}
…		…
546	}	831	}
547	#else	832	#else
548	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))	833	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
549	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))	834	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
550	#endif	835	#endif
		836
		837	/*****************************************************************************/
		838	/* array length */
551		839
552	#if ecb_cplusplus_does_not_suck	840	#if ecb_cplusplus_does_not_suck
553	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */	841	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
554	template<typename T, int N>	842	template<typename T, int N>
555	static inline int ecb_array_length (const T (&arr)[N])	843	static inline int ecb_array_length (const T (&arr)[N])
…		…
558	}	846	}
559	#else	847	#else
560	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	848	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
561	#endif	849	#endif
562		850
		851	/*****************************************************************************/
		852	/* IEEE 754-2008 half float conversions */
		853
		854	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		855	ecb_function_ ecb_const uint32_t
		856	ecb_binary16_to_binary32 (uint32_t x)
		857	{
		858	unsigned int s = (x & 0x8000) << (31 - 15);
		859	int e = (x >> 10) & 0x001f;
		860	unsigned int m = x & 0x03ff;
		861
		862	if (ecb_expect_false (e == 31))
		863	/* infinity or NaN */
		864	e = 255 - (127 - 15);
		865	else if (ecb_expect_false (!e))
		866	{
		867	if (ecb_expect_true (!m))
		868	/* zero, handled by code below by forcing e to 0 */
		869	e = 0 - (127 - 15);
		870	else
		871	{
		872	/* subnormal, renormalise */
		873	unsigned int s = 10 - ecb_ld32 (m);
		874
		875	m = (m << s) & 0x3ff; /* mask implicit bit */
		876	e -= s - 1;
		877	}
		878	}
		879
		880	/* e and m now are normalised, or zero, (or inf or nan) */
		881	e += 127 - 15;
		882
		883	return s \| (e << 23) \| (m << (23 - 10));
		884	}
		885
		886	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		887	ecb_function_ ecb_const uint16_t
		888	ecb_binary32_to_binary16 (uint32_t x)
		889	{
		890	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		891	int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		892	unsigned int m = x & 0x007fffff;
		893
		894	x &= 0x7fffffff;
		895
		896	/* if it's within range of binary16 normals, use fast path */
		897	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		898	{
		899	/* mantissa round-to-even */
		900	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		901
		902	/* handle overflow */
		903	if (ecb_expect_false (m >= 0x00800000))
		904	{
		905	m >>= 1;
		906	e += 1;
		907	}
		908
		909	return s \| (e << 10) \| (m >> (23 - 10));
		910	}
		911
		912	/* handle large numbers and infinity */
		913	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		914	return s \| 0x7c00;
		915
		916	/* handle zero, subnormals and small numbers */
		917	if (ecb_expect_true (x < 0x38800000))
		918	{
		919	/* zero */
		920	if (ecb_expect_true (!x))
		921	return s;
		922
		923	/* handle subnormals */
		924
		925	/* too small, will be zero */
		926	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		927	return s;
		928
		929	m \|= 0x00800000; /* make implicit bit explicit */
		930
		931	/* very tricky - we need to round to the nearest e (+10) bit value */
		932	{
		933	unsigned int bits = 14 - e;
		934	unsigned int half = (1 << (bits - 1)) - 1;
		935	unsigned int even = (m >> bits) & 1;
		936
		937	/* if this overflows, we will end up with a normalised number */
		938	m = (m + half + even) >> bits;
		939	}
		940
		941	return s \| m;
		942	}
		943
		944	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		945	m >>= 13;
		946
		947	return s \| 0x7c00 \| m \| !m;
		948	}
		949
563	/*******************************************************************************/	950	/*******************************************************************************/
564	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */	951	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
565		952
566	/* basically, everything uses "ieee pure-endian" floating point numbers */	953	/* basically, everything uses "ieee pure-endian" floating point numbers */
567	/* the only noteworthy exception is ancient armle, which uses order 43218765 */	954	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
568	#if 0 \	955	#if 0 \
569	\|\| __i386 \|\| __i386__ \	956	\|\| __i386 \|\| __i386__ \
570	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \	957	\|\| ECB_GCC_AMD64 \
571	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \	958	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
572	\|\| defined __arm__ && defined __ARM_EABI__ \
573	\|\| defined __s390__ \|\| defined __s390x__ \	959	\|\| defined __s390__ \|\| defined __s390x__ \
574	\|\| defined __mips__ \	960	\|\| defined __mips__ \
575	\|\| defined __alpha__ \	961	\|\| defined __alpha__ \
576	\|\| defined __hppa__ \	962	\|\| defined __hppa__ \
577	\|\| defined __ia64__ \	963	\|\| defined __ia64__ \
578	\|\| defined __m68k__ \	964	\|\| defined __m68k__ \
579	\|\| defined __m88k__ \	965	\|\| defined __m88k__ \
580	\|\| defined __sh__ \	966	\|\| defined __sh__ \
581	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64	967	\|\| defined _M_IX86 \|\| defined ECB_MSVC_AMD64 \|\| defined _M_IA64 \
		968	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__)) \
		969	\|\| defined __aarch64__
582	#define ECB_STDFP 1	970	#define ECB_STDFP 1
583	#include <string.h> /* for memcpy */
584	#else	971	#else
585	#define ECB_STDFP 0	972	#define ECB_STDFP 0
586	#endif	973	#endif
587		974
588	#ifndef ECB_NO_LIBM	975	#ifndef ECB_NO_LIBM
…		…
600	#define ECB_NAN NAN	987	#define ECB_NAN NAN
601	#else	988	#else
602	#define ECB_NAN ECB_INFINITY	989	#define ECB_NAN ECB_INFINITY
603	#endif	990	#endif
604		991
605	/* converts an ieee half/binary16 to a float */	992	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
606	ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;	993	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
607	ecb_function_ float	994	#define ecb_frexpf(x,e) frexpf ((x), (e))
608	ecb_binary16_to_float (uint16_t x)	995	#else
609	{	996	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
610	int e = (x >> 10) & 0x1f;	997	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
611	int m = x & 0x3ff;	998	#endif
612	float r;
613
614	if (!e ) r = ldexpf (m , -24);
615	else if (e != 31) r = ldexpf (m + 0x400, e - 25);
616	else if (m ) r = ECB_NAN;
617	else r = ECB_INFINITY;
618
619	return x & 0x8000 ? -r : r;
620	}
621		999
622	/* convert a float to ieee single/binary32 */	1000	/* convert a float to ieee single/binary32 */
623	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;	1001	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
624	ecb_function_ uint32_t	1002	ecb_function_ ecb_const uint32_t
625	ecb_float_to_binary32 (float x)	1003	ecb_float_to_binary32 (float x)
626	{	1004	{
627	uint32_t r;	1005	uint32_t r;
628		1006
629	#if ECB_STDFP	1007	#if ECB_STDFP
…		…
636	if (x == 0e0f ) return 0x00000000U;	1014	if (x == 0e0f ) return 0x00000000U;
637	if (x > +3.40282346638528860e+38f) return 0x7f800000U;	1015	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
638	if (x < -3.40282346638528860e+38f) return 0xff800000U;	1016	if (x < -3.40282346638528860e+38f) return 0xff800000U;
639	if (x != x ) return 0x7fbfffffU;	1017	if (x != x ) return 0x7fbfffffU;
640		1018
641	m = frexpf (x, &e) * 0x1000000U;	1019	m = ecb_frexpf (x, &e) * 0x1000000U;
642		1020
643	r = m & 0x80000000U;	1021	r = m & 0x80000000U;
644		1022
645	if (r)	1023	if (r)
646	m = -m;	1024	m = -m;
…		…
658		1036
659	return r;	1037	return r;
660	}	1038	}
661		1039
662	/* converts an ieee single/binary32 to a float */	1040	/* converts an ieee single/binary32 to a float */
663	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;	1041	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
664	ecb_function_ float	1042	ecb_function_ ecb_const float
665	ecb_binary32_to_float (uint32_t x)	1043	ecb_binary32_to_float (uint32_t x)
666	{	1044	{
667	float r;	1045	float r;
668		1046
669	#if ECB_STDFP	1047	#if ECB_STDFP
…		…
679	x \|= 0x800000U;	1057	x \|= 0x800000U;
680	else	1058	else
681	e = 1;	1059	e = 1;
682		1060
683	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /	1061	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
684	r = ldexpf (x * (0.5f / 0x800000U), e - 126);	1062	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
685		1063
686	r = neg ? -r : r;	1064	r = neg ? -r : r;
687	#endif	1065	#endif
688		1066
689	return r;	1067	return r;
690	}	1068	}
691		1069
692	/* convert a double to ieee double/binary64 */	1070	/* convert a double to ieee double/binary64 */
693	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;	1071	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
694	ecb_function_ uint64_t	1072	ecb_function_ ecb_const uint64_t
695	ecb_double_to_binary64 (double x)	1073	ecb_double_to_binary64 (double x)
696	{	1074	{
697	uint64_t r;	1075	uint64_t r;
698		1076
699	#if ECB_STDFP	1077	#if ECB_STDFP
…		…
728		1106
729	return r;	1107	return r;
730	}	1108	}
731		1109
732	/* converts an ieee double/binary64 to a double */	1110	/* converts an ieee double/binary64 to a double */
733	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;	1111	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
734	ecb_function_ double	1112	ecb_function_ ecb_const double
735	ecb_binary64_to_double (uint64_t x)	1113	ecb_binary64_to_double (uint64_t x)
736	{	1114	{
737	double r;	1115	double r;
738		1116
739	#if ECB_STDFP	1117	#if ECB_STDFP
…		…
757	#endif	1135	#endif
758		1136
759	return r;	1137	return r;
760	}	1138	}
761		1139
762	#endif	1140	/* convert a float to ieee half/binary16 */
		1141	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1142	ecb_function_ ecb_const uint16_t
		1143	ecb_float_to_binary16 (float x)
		1144	{
		1145	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1146	}
763		1147
764	#endif	1148	/* convert an ieee half/binary16 to float */
		1149	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1150	ecb_function_ ecb_const float
		1151	ecb_binary16_to_float (uint16_t x)
		1152	{
		1153	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1154	}
765		1155
		1156	#endif
		1157
		1158	#endif
		1159

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Comparing libecb/ecb.h (file contents): Revision 1.124 by root, Tue Dec 3 15:35:14 2013 UTC vs. Revision 1.190 by root, Mon Jun 21 21:36:13 2021 UTC

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Comparing libecb/ecb.h (file contents):
Revision 1.124 by root, Tue Dec 3 15:35:14 2013 UTC vs.
Revision 1.190 by root, Mon Jun 21 21:36:13 2021 UTC