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

Comparing libecb/ecb.h (file contents):
Revision 1.81 by root, Fri Mar 23 19:04:07 2012 UTC vs.
Revision 1.190 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 (©) 2009-2012 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	#ifdef _WIN32	44	/* 16 bits major, 16 bits minor */
		45	#define ECB_VERSION 0x00010009
		46
		47	#include <string.h> /* for memcpy */
		48
		49	#if defined (_WIN32) && !defined (__MINGW32__)
34	typedef signed char int8_t;	50	typedef signed char int8_t;
35	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;
36	typedef signed short int16_t;	54	typedef signed short int16_t;
37	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;
38	typedef signed int int32_t;	58	typedef signed int int32_t;
39	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;
40	#if __GNUC__	62	#if __GNUC__
41	typedef signed long long int64_t;	63	typedef signed long long int64_t;
42	typedef unsigned long long uint64_t;	64	typedef unsigned long long uint64_t;
43	#else /* _MSC_VER \|\| __BORLANDC__ */	65	#else /* _MSC_VER \|\| __BORLANDC__ */
44	typedef signed __int64 int64_t;	66	typedef signed __int64 int64_t;
45	typedef unsigned __int64 uint64_t;	67	typedef unsigned __int64 uint64_t;
46	#endif	68	#endif
		69	typedef int64_t int_fast64_t;
		70	typedef uint64_t uint_fast64_t;
		71	#ifdef _WIN64
		72	#define ECB_PTRSIZE 8
		73	typedef uint64_t uintptr_t;
		74	typedef int64_t intptr_t;
		75	#else
		76	#define ECB_PTRSIZE 4
		77	typedef uint32_t uintptr_t;
		78	typedef int32_t intptr_t;
		79	#endif
47	#else	80	#else
48	#include <inttypes.h>	81	#include <inttypes.h>
		82	#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
		83	#define ECB_PTRSIZE 8
		84	#else
		85	#define ECB_PTRSIZE 4
		86	#endif
		87	#endif
		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
		100	/* work around x32 idiocy by defining proper macros */
		101	#if ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64
		102	#if _ILP32
		103	#define ECB_AMD64_X32 1
		104	#else
		105	#define ECB_AMD64 1
		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
49	#endif	113	#endif
50		114
51	/* many compilers define _GNUC_ to some versions but then only implement	115	/* many compilers define _GNUC_ to some versions but then only implement
52	* what their idiot authors think are the "more important" extensions,	116	* what their idiot authors think are the "more important" extensions,
53	* causing enormous grief in return for some better fake benchmark numbers.	117	* causing enormous grief in return for some better fake benchmark numbers.
54	* or so.	118	* or so.
55	* 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
56	* 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.
57	*/	121	*/
58	#ifndef ECB_GCC_VERSION
59	#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__
60	#define ECB_GCC_VERSION(major,minor) 0	123	#define ECB_GCC_VERSION(major,minor) 0
61	#else	124	#else
62	#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)))
63	#endif	126	#endif
		127
		128	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
		129
		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
		142	#define ECB_CPP (__cplusplus+0)
		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)
		158
		159	#if ECB_CPP
		160	#define ECB_EXTERN_C extern "C"
		161	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		162	#define ECB_EXTERN_C_END }
		163	#else
		164	#define ECB_EXTERN_C extern
		165	#define ECB_EXTERN_C_BEG
		166	#define ECB_EXTERN_C_END
64	#endif	167	#endif
65		168
66	/*****************************************************************************/	169	/*****************************************************************************/
67		170
68	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */	171	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
69	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */	172	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
70		173
71	#if ECB_NO_THREADS	174	#if ECB_NO_THREADS
72	# define ECB_NO_SMP 1	175	#define ECB_NO_SMP 1
73	#endif	176	#endif
74		177
75	#if ECB_NO_THREADS \|\| ECB_NO_SMP	178	#if ECB_NO_SMP
76	#define ECB_MEMORY_FENCE do { } while (0)	179	#define ECB_MEMORY_FENCE do { } while (0)
77	#endif	180	#endif
78		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
79	#ifndef ECB_MEMORY_FENCE	191	#ifndef ECB_MEMORY_FENCE
80	#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")
81	#if __i386 \|\| __i386__	194	#if __i386 \|\| __i386__
82	#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")
83	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */	196	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
84	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */	197	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
85	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	198	#elif ECB_GCC_AMD64
86	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	199	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
87	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")	200	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
88	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */	201	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
89	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	202	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
90	#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 */
91	#elif defined(__ARM_ARCH_6__ ) \|\| defined(__ARM_ARCH_6J__ ) \	211	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
92	\|\| defined(__ARM_ARCH_6K__) \|\| defined(__ARM_ARCH_6ZK__)	212	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__ \
		213	\|\| defined __ARM_ARCH_6T2__
93	#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")
94	#elif defined(__ARM_ARCH_7__ ) \|\| defined(__ARM_ARCH_7A__ ) \	215	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
95	\|\| defined(__ARM_ARCH_7M__) \|\| defined(__ARM_ARCH_7R__ )	216	\|\| defined __ARM_ARCH_7R__ \|\| defined __ARM_ARCH_7M__
96	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	217	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
97	#elif __sparc \|\| __sparc__	218	#elif __aarch64__
		219	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		220	#elif (__sparc \|\| __sparc__) && !(__sparc_v8__ \|\| defined __sparcv8)
98	#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")
99	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	222	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
100	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	223	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
101	#elif defined(__s390__) \|\| defined(__s390x__)	224	#elif defined __s390__ \|\| defined __s390x__
102	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	225	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
103	#elif defined(__mips__)	226	#elif defined __mips__
		227	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		228	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
		229	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
		230	#elif defined __alpha__
104	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	231	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
105	#elif __xlC__	232	#elif defined __hppa__
106	#define ECB_MEMORY_FENCE __lwsync ()	233	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		234	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		235	#elif defined __ia64__
		236	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		237	#elif defined __m68k__
		238	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		239	#elif defined __m88k__
		240	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		241	#elif defined __sh__
		242	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
107	#endif	243	#endif
108	#endif	244	#endif
109	#endif	245	#endif
110		246
111	#ifndef ECB_MEMORY_FENCE	247	#ifndef ECB_MEMORY_FENCE
		248	#if ECB_GCC_VERSION(4,7)
		249	/* see comment below (stdatomic.h) about the C11 memory model. */
		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)
		255
		256	#elif ECB_CLANG_EXTENSION(c_atomic)
		257	/* see comment below (stdatomic.h) about the C11 memory model. */
		258	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		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)
		263
112	#if ECB_GCC_VERSION(4,4) \|\| defined(__INTEL_COMPILER) \|\| defined(__clang__)	264	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
113	#define ECB_MEMORY_FENCE __sync_synchronize ()	265	#define ECB_MEMORY_FENCE __sync_synchronize ()
114	/#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) /	266	#elif _MSC_VER >= 1500 /* VC++ 2008 */
115	/#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) /	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()
116	#elif _MSC_VER >= 1400 /* VC++ 2005 */	272	#elif _MSC_VER >= 1400 /* VC++ 2005 */
117	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	273	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
118	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	274	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
119	#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 */
120	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	276	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
121	#elif defined(_WIN32)	277	#elif defined _WIN32
122	#include <WinNT.h>	278	#include <WinNT.h>
123	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */	279	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
124	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	280	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
125	#include <mbarrier.h>	281	#include <mbarrier.h>
126	#define ECB_MEMORY_FENCE __machine_rw_barrier ()	282	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
127	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()	283	#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
128	#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 ()
		286	#elif __xlC__
		287	#define ECB_MEMORY_FENCE __sync ()
		288	#endif
		289	#endif
		290
		291	#ifndef ECB_MEMORY_FENCE
		292	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		293	/* we assume that these memory fences work on all variables/all memory accesses, */
		294	/* not just C11 atomics and atomic accesses */
		295	#include <stdatomic.h>
		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)
129	#endif	299	#endif
130	#endif	300	#endif
131		301
132	#ifndef ECB_MEMORY_FENCE	302	#ifndef ECB_MEMORY_FENCE
133	#if !ECB_AVOID_PTHREADS	303	#if !ECB_AVOID_PTHREADS
…		…
145	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;	315	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
146	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)	316	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
147	#endif	317	#endif
148	#endif	318	#endif
149		319
150	#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)	320	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
151	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE	321	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
152	#endif	322	#endif
153		323
154	#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)	324	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
155	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	325	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
156	#endif	326	#endif
157		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
158	/*****************************************************************************/	332	/*****************************************************************************/
159		333
160	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	334	#if ECB_CPP
161
162	#if __cplusplus
163	#define ecb_inline static inline	335	#define ecb_inline static inline
164	#elif ECB_GCC_VERSION(2,5)	336	#elif ECB_GCC_VERSION(2,5)
165	#define ecb_inline static __inline__	337	#define ecb_inline static __inline__
166	#elif ECB_C99	338	#elif ECB_C99
167	#define ecb_inline static inline	339	#define ecb_inline static inline
…		…
181		353
182	#define ECB_CONCAT_(a, b) a ## b	354	#define ECB_CONCAT_(a, b) a ## b
183	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	355	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
184	#define ECB_STRINGIFY_(a) # a	356	#define ECB_STRINGIFY_(a) # a
185	#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))
186		359
187	#define ecb_function_ ecb_inline	360	#define ecb_function_ ecb_inline
188		361
189	#if ECB_GCC_VERSION(3,1)	362	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
190	#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)
191	#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)
192	#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)
193	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	385	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
194	#else	386	#else
195	#define ecb_attribute(attrlist)
196	#define ecb_is_constant(expr) 0
197	#define ecb_expect(expr,value) (expr)
198	#define ecb_prefetch(addr,rw,locality)	387	#define ecb_prefetch(addr,rw,locality)
199	#endif	388	#endif
200		389
201	/* no emulation for ecb_decltype */	390	/* no emulation for ecb_decltype */
202	#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; };
203	#define ecb_decltype(x) __decltype(x)	394	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
204	#elif ECB_GCC_VERSION(3,0)	395	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
205	#define ecb_decltype(x) __typeof(x)	396	#define ecb_decltype(x) __typeof__ (x)
206	#endif	397	#endif
207		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
208	#define ecb_noinline ecb_attribute ((__noinline__))	416	#define ecb_noinline ecb_attribute ((__noinline__))
209	#define ecb_noreturn ecb_attribute ((__noreturn__))	417	#endif
		418
210	#define ecb_unused ecb_attribute ((__unused__))	419	#define ecb_unused ecb_attribute ((__unused__))
211	#define ecb_const ecb_attribute ((__const__))	420	#define ecb_const ecb_attribute ((__const__))
212	#define ecb_pure ecb_attribute ((__pure__))	421	#define ecb_pure ecb_attribute ((__pure__))
		422
		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 */
		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)
		431	#else
		432	#define ecb_noreturn ecb_attribute ((__noreturn__))
		433	#endif
213		434
214	#if ECB_GCC_VERSION(4,3)	435	#if ECB_GCC_VERSION(4,3)
215	#define ecb_artificial ecb_attribute ((__artificial__))	436	#define ecb_artificial ecb_attribute ((__artificial__))
216	#define ecb_hot ecb_attribute ((__hot__))	437	#define ecb_hot ecb_attribute ((__hot__))
217	#define ecb_cold ecb_attribute ((__cold__))	438	#define ecb_cold ecb_attribute ((__cold__))
…		…
229	/* for compatibility to the rest of the world */	450	/* for compatibility to the rest of the world */
230	#define ecb_likely(expr) ecb_expect_true (expr)	451	#define ecb_likely(expr) ecb_expect_true (expr)
231	#define ecb_unlikely(expr) ecb_expect_false (expr)	452	#define ecb_unlikely(expr) ecb_expect_false (expr)
232		453
233	/* count trailing zero bits and count # of one bits */	454	/* count trailing zero bits and count # of one bits */
234	#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))
235	/* 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 */
236	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	460	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
237	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	461	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
238	#define ecb_ctz32(x) __builtin_ctz (x)	462	#define ecb_ctz32(x) __builtin_ctz (x)
239	#define ecb_ctz64(x) __builtin_ctzll (x)	463	#define ecb_ctz64(x) __builtin_ctzll (x)
240	#define ecb_popcount32(x) __builtin_popcount (x)	464	#define ecb_popcount32(x) __builtin_popcount (x)
241	/* no popcountll */	465	/* no popcountll */
242	#else	466	#else
243	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	467	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
244	ecb_function_ int	468	ecb_function_ ecb_const int
245	ecb_ctz32 (uint32_t x)	469	ecb_ctz32 (uint32_t x)
246	{	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
247	int r = 0;	476	int r = 0;
248		477
249	x &= ~x + 1; /* this isolates the lowest bit */	478	x &= ~x + 1; /* this isolates the lowest bit */
250		479
251	#if ECB_branchless_on_i386	480	#if ECB_branchless_on_i386
…		…
261	if (x & 0xff00ff00) r += 8;	490	if (x & 0xff00ff00) r += 8;
262	if (x & 0xffff0000) r += 16;	491	if (x & 0xffff0000) r += 16;
263	#endif	492	#endif
264		493
265	return r;	494	return r;
		495	#endif
266	}	496	}
267		497
268	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	498	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
269	ecb_function_ int	499	ecb_function_ ecb_const int
270	ecb_ctz64 (uint64_t x)	500	ecb_ctz64 (uint64_t x)
271	{	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
272	int shift = x & 0xffffffffU ? 0 : 32;	507	int shift = x & 0xffffffff ? 0 : 32;
273	return ecb_ctz32 (x >> shift) + shift;	508	return ecb_ctz32 (x >> shift) + shift;
		509	#endif
274	}	510	}
275		511
276	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	512	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
277	ecb_function_ int	513	ecb_function_ ecb_const int
278	ecb_popcount32 (uint32_t x)	514	ecb_popcount32 (uint32_t x)
279	{	515	{
280	x -= (x >> 1) & 0x55555555;	516	x -= (x >> 1) & 0x55555555;
281	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	517	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
282	x = ((x >> 4) + x) & 0x0f0f0f0f;	518	x = ((x >> 4) + x) & 0x0f0f0f0f;
283	x *= 0x01010101;	519	x *= 0x01010101;
284		520
285	return x >> 24;	521	return x >> 24;
286	}	522	}
287		523
288	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	524	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
289	ecb_function_ int ecb_ld32 (uint32_t x)	525	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
290	{	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
291	int r = 0;	532	int r = 0;
292		533
293	if (x >> 16) { x >>= 16; r += 16; }	534	if (x >> 16) { x >>= 16; r += 16; }
294	if (x >> 8) { x >>= 8; r += 8; }	535	if (x >> 8) { x >>= 8; r += 8; }
295	if (x >> 4) { x >>= 4; r += 4; }	536	if (x >> 4) { x >>= 4; r += 4; }
296	if (x >> 2) { x >>= 2; r += 2; }	537	if (x >> 2) { x >>= 2; r += 2; }
297	if (x >> 1) { r += 1; }	538	if (x >> 1) { r += 1; }
298		539
299	return r;	540	return r;
		541	#endif
300	}	542	}
301		543
302	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	544	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
303	ecb_function_ int ecb_ld64 (uint64_t x)	545	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
304	{	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
305	int r = 0;	552	int r = 0;
306		553
307	if (x >> 32) { x >>= 32; r += 32; }	554	if (x >> 32) { x >>= 32; r += 32; }
308		555
309	return r + ecb_ld32 (x);	556	return r + ecb_ld32 (x);
310	}
311	#endif	557	#endif
		558	}
		559	#endif
312		560
		561	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
		562	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		563	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
		564	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		565
313	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	566	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
314	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	567	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
315	{	568	{
316	return ( (x * 0x0802U & 0x22110U)	569	return ( (x * 0x0802U & 0x22110U)
317	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	570	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
318	}	571	}
319		572
320	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	573	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
321	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	574	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
322	{	575	{
323	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	576	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
324	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	577	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
325	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	578	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
326	x = ( x >> 8 ) \| ( x << 8);	579	x = ( x >> 8 ) \| ( x << 8);
327		580
328	return x;	581	return x;
329	}	582	}
330		583
331	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	584	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
332	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	585	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
333	{	586	{
334	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	587	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
335	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	588	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
336	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	589	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
337	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	590	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
340	return x;	593	return x;
341	}	594	}
342		595
343	/* popcount64 is only available on 64 bit cpus as gcc builtin */	596	/* popcount64 is only available on 64 bit cpus as gcc builtin */
344	/* so for this version we are lazy */	597	/* so for this version we are lazy */
345	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	598	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
346	ecb_function_ int	599	ecb_function_ ecb_const int
347	ecb_popcount64 (uint64_t x)	600	ecb_popcount64 (uint64_t x)
348	{	601	{
349	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	602	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
350	}	603	}
351		604
352	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);
353	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);
354	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);
355	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);
356	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);
357	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);
358	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);
359	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);
360		613
361	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); }
362	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); }
363	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); }
364	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); }
365	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); }
366	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); }
367	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); }
368	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); }
369		622
370	#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
371	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	665	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		666	#endif
372	#define ecb_bswap32(x) __builtin_bswap32 (x)	667	#define ecb_bswap32(x) __builtin_bswap32 (x)
373	#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)))
374	#else	674	#else
375	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	675	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
376	ecb_function_ uint16_t	676	ecb_function_ ecb_const uint16_t
377	ecb_bswap16 (uint16_t x)	677	ecb_bswap16 (uint16_t x)
378	{	678	{
379	return ecb_rotl16 (x, 8);	679	return ecb_rotl16 (x, 8);
380	}	680	}
381		681
382	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	682	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
383	ecb_function_ uint32_t	683	ecb_function_ ecb_const uint32_t
384	ecb_bswap32 (uint32_t x)	684	ecb_bswap32 (uint32_t x)
385	{	685	{
386	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	686	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
387	}	687	}
388		688
389	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	689	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
390	ecb_function_ uint64_t	690	ecb_function_ ecb_const uint64_t
391	ecb_bswap64 (uint64_t x)	691	ecb_bswap64 (uint64_t x)
392	{	692	{
393	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	693	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
394	}	694	}
395	#endif	695	#endif
396		696
397	#if ECB_GCC_VERSION(4,5)	697	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
398	#define ecb_unreachable() __builtin_unreachable ()	698	#define ecb_unreachable() __builtin_unreachable ()
399	#else	699	#else
400	/* 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 :/ */
401	ecb_inline void ecb_unreachable (void) ecb_noreturn;	701	ecb_inline ecb_noreturn void ecb_unreachable (void);
402	ecb_inline void ecb_unreachable (void) { }	702	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
403	#endif	703	#endif
404		704
405	/* try to tell the compiler that some condition is definitely true */	705	/* try to tell the compiler that some condition is definitely true */
406	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)	706	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
407		707
408	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	708	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
409	ecb_inline unsigned char	709	ecb_inline ecb_const uint32_t
410	ecb_byteorder_helper (void)	710	ecb_byteorder_helper (void)
411	{	711	{
412	const uint32_t u = 0x11223344;	712	/* the union code still generates code under pressure in gcc, */
413	return (unsigned char )&u;	713	/* but less than using pointers, and always seems to */
		714	/* successfully return a constant. */
		715	/* the reason why we have this horrible preprocessor mess */
		716	/* is to avoid it in all cases, at least on common architectures */
		717	/* or when using a recent enough gcc version (>= 4.6) */
		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
		721	return 0x44332211;
		722	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		723	\|\| ((__AARCH64EB__ \|\| __MIPSEB__ \|\| __ARMEB__) && !__VOS__)
		724	#define ECB_BIG_ENDIAN 1
		725	return 0x11223344;
		726	#else
		727	union
		728	{
		729	uint8_t c[4];
		730	uint32_t u;
		731	} u = { 0x11, 0x22, 0x33, 0x44 };
		732	return u.u;
		733	#endif
414	}	734	}
415		735
416	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	736	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
417	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; }
418	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	738	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
419	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 */
420		813
421	#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 */
422	#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))
423	#else	817	#else
424	#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)))
425	#endif	819	#endif
426		820
427	#if __cplusplus	821	#if ECB_CPP
428	template<typename T>	822	template<typename T>
429	static inline T ecb_div_rd (T val, T div)	823	static inline T ecb_div_rd (T val, T div)
430	{	824	{
431	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	825	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
432	}	826	}
…		…
437	}	831	}
438	#else	832	#else
439	#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))
440	#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))
441	#endif	835	#endif
		836
		837	/*****************************************************************************/
		838	/* array length */
442		839
443	#if ecb_cplusplus_does_not_suck	840	#if ecb_cplusplus_does_not_suck
444	/* 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) */
445	template<typename T, int N>	842	template<typename T, int N>
446	static inline int ecb_array_length (const T (&arr)[N])	843	static inline int ecb_array_length (const T (&arr)[N])
…		…
449	}	846	}
450	#else	847	#else
451	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	848	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
452	#endif	849	#endif
453		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
		950	/*******************************************************************************/
		951	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		952
		953	/* basically, everything uses "ieee pure-endian" floating point numbers */
		954	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		955	#if 0 \
		956	\|\| __i386 \|\| __i386__ \
		957	\|\| ECB_GCC_AMD64 \
		958	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
		959	\|\| defined __s390__ \|\| defined __s390x__ \
		960	\|\| defined __mips__ \
		961	\|\| defined __alpha__ \
		962	\|\| defined __hppa__ \
		963	\|\| defined __ia64__ \
		964	\|\| defined __m68k__ \
		965	\|\| defined __m88k__ \
		966	\|\| defined __sh__ \
		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__
		970	#define ECB_STDFP 1
		971	#else
		972	#define ECB_STDFP 0
		973	#endif
		974
		975	#ifndef ECB_NO_LIBM
		976
		977	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		978
		979	/* only the oldest of old doesn't have this one. solaris. */
		980	#ifdef INFINITY
		981	#define ECB_INFINITY INFINITY
		982	#else
		983	#define ECB_INFINITY HUGE_VAL
454	#endif	984	#endif
455		985
		986	#ifdef NAN
		987	#define ECB_NAN NAN
		988	#else
		989	#define ECB_NAN ECB_INFINITY
		990	#endif
		991
		992	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
		993	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		994	#define ecb_frexpf(x,e) frexpf ((x), (e))
		995	#else
		996	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		997	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		998	#endif
		999
		1000	/* convert a float to ieee single/binary32 */
		1001	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
		1002	ecb_function_ ecb_const uint32_t
		1003	ecb_float_to_binary32 (float x)
		1004	{
		1005	uint32_t r;
		1006
		1007	#if ECB_STDFP
		1008	memcpy (&r, &x, 4);
		1009	#else
		1010	/* slow emulation, works for anything but -0 */
		1011	uint32_t m;
		1012	int e;
		1013
		1014	if (x == 0e0f ) return 0x00000000U;
		1015	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1016	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1017	if (x != x ) return 0x7fbfffffU;
		1018
		1019	m = ecb_frexpf (x, &e) * 0x1000000U;
		1020
		1021	r = m & 0x80000000U;
		1022
		1023	if (r)
		1024	m = -m;
		1025
		1026	if (e <= -126)
		1027	{
		1028	m &= 0xffffffU;
		1029	m >>= (-125 - e);
		1030	e = -126;
		1031	}
		1032
		1033	r \|= (e + 126) << 23;
		1034	r \|= m & 0x7fffffU;
		1035	#endif
		1036
		1037	return r;
		1038	}
		1039
		1040	/* converts an ieee single/binary32 to a float */
		1041	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
		1042	ecb_function_ ecb_const float
		1043	ecb_binary32_to_float (uint32_t x)
		1044	{
		1045	float r;
		1046
		1047	#if ECB_STDFP
		1048	memcpy (&r, &x, 4);
		1049	#else
		1050	/* emulation, only works for normals and subnormals and +0 */
		1051	int neg = x >> 31;
		1052	int e = (x >> 23) & 0xffU;
		1053
		1054	x &= 0x7fffffU;
		1055
		1056	if (e)
		1057	x \|= 0x800000U;
		1058	else
		1059	e = 1;
		1060
		1061	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
		1062	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
		1063
		1064	r = neg ? -r : r;
		1065	#endif
		1066
		1067	return r;
		1068	}
		1069
		1070	/* convert a double to ieee double/binary64 */
		1071	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
		1072	ecb_function_ ecb_const uint64_t
		1073	ecb_double_to_binary64 (double x)
		1074	{
		1075	uint64_t r;
		1076
		1077	#if ECB_STDFP
		1078	memcpy (&r, &x, 8);
		1079	#else
		1080	/* slow emulation, works for anything but -0 */
		1081	uint64_t m;
		1082	int e;
		1083
		1084	if (x == 0e0 ) return 0x0000000000000000U;
		1085	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1086	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1087	if (x != x ) return 0X7ff7ffffffffffffU;
		1088
		1089	m = frexp (x, &e) * 0x20000000000000U;
		1090
		1091	r = m & 0x8000000000000000;;
		1092
		1093	if (r)
		1094	m = -m;
		1095
		1096	if (e <= -1022)
		1097	{
		1098	m &= 0x1fffffffffffffU;
		1099	m >>= (-1021 - e);
		1100	e = -1022;
		1101	}
		1102
		1103	r \|= ((uint64_t)(e + 1022)) << 52;
		1104	r \|= m & 0xfffffffffffffU;
		1105	#endif
		1106
		1107	return r;
		1108	}
		1109
		1110	/* converts an ieee double/binary64 to a double */
		1111	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
		1112	ecb_function_ ecb_const double
		1113	ecb_binary64_to_double (uint64_t x)
		1114	{
		1115	double r;
		1116
		1117	#if ECB_STDFP
		1118	memcpy (&r, &x, 8);
		1119	#else
		1120	/* emulation, only works for normals and subnormals and +0 */
		1121	int neg = x >> 63;
		1122	int e = (x >> 52) & 0x7ffU;
		1123
		1124	x &= 0xfffffffffffffU;
		1125
		1126	if (e)
		1127	x \|= 0x10000000000000U;
		1128	else
		1129	e = 1;
		1130
		1131	/* we distrust ldexp a bit and do the 2*-53 scaling by an extra multiply /
		1132	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1133
		1134	r = neg ? -r : r;
		1135	#endif
		1136
		1137	return r;
		1138	}
		1139
		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	}
		1147
		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	}
		1155
		1156	#endif
		1157
		1158	#endif
		1159

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Comparing libecb/ecb.h (file contents): Revision 1.81 by root, Fri Mar 23 19:04:07 2012 UTC vs. Revision 1.190 by root, Mon Jun 21 21:36:13 2021 UTC

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Comparing libecb/ecb.h (file contents):
Revision 1.81 by root, Fri Mar 23 19:04:07 2012 UTC vs.
Revision 1.190 by root, Mon Jun 21 21:36:13 2021 UTC