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Comparing libecb/ecb.h (file contents):
Revision 1.11 by root, Thu May 26 18:00:42 2011 UTC vs.
Revision 1.202 by root, Wed Mar 23 09:58:06 2022 UTC

1	/*	1	/*
2	* libecb	2	* libecb - http://software.schmorp.de/pkg/libecb
3	*	3	*
4	* Copyright (©) 2009-2011 Marc Alexander Lehmann	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
		44	/* 16 bits major, 16 bits minor */
		45	#define ECB_VERSION 0x0001000b
		46
		47	#include <string.h> /* for memcpy */
		48
		49	#if defined (_WIN32) && !defined (__MINGW32__)
		50	typedef signed char int8_t;
		51	typedef unsigned char uint8_t;
		52	typedef signed char int_fast8_t;
		53	typedef unsigned char uint_fast8_t;
		54	typedef signed short int16_t;
		55	typedef unsigned short uint16_t;
		56	typedef signed int int_fast16_t;
		57	typedef unsigned int uint_fast16_t;
		58	typedef signed int int32_t;
		59	typedef unsigned int uint32_t;
		60	typedef signed int int_fast32_t;
		61	typedef unsigned int uint_fast32_t;
		62	#if __GNUC__
		63	typedef signed long long int64_t;
		64	typedef unsigned long long uint64_t;
		65	#else /* _MSC_VER || __BORLANDC__ */
		66	typedef signed __int64 int64_t;
		67	typedef unsigned __int64 uint64_t;
		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
		80	#else
33	#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
34		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
		113	#endif
		114
		115	/* many compilers define _GNUC_ to some versions but then only implement
		116	* what their idiot authors think are the "more important" extensions,
		117	* causing enormous grief in return for some better fake benchmark numbers.
		118	* or so.
		119	* we try to detect these and simply assume they are not gcc - if they have
		120	* an issue with that they should have done it right in the first place.
		121	*/
		122	#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
		123	#define ECB_GCC_VERSION(major,minor) 0
		124	#else
35	#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)))
		126	#endif
36		127
37	#ifndef __cplusplus	128	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
38	# if __STDC_VERSION__ >= 199901L	129
39	# define ECB_INLINE inline	130	#if __clang__ && defined __has_builtin
40	typedef _Bool ecb_bool;	131	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
41	# else	132	#else
42	# define ECB_INLINE inline /* yeah! */	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
		167	#endif
		168
		169	/*****************************************************************************/
		170
		171	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		172	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		173
		174	#if ECB_NO_THREADS
		175	#define ECB_NO_SMP 1
		176	#endif
		177
		178	#if ECB_NO_SMP
		179	#define ECB_MEMORY_FENCE do { } while (0)
		180	#endif
		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
		191	#ifndef ECB_MEMORY_FENCE
		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")
		194	#if __i386 || __i386__
		195	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		196	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		197	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
		198	#elif ECB_GCC_AMD64
		199	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		200	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		201	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
		202	#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
		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 */
		211	#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
		212	|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
		213	|| defined __ARM_ARCH_6T2__
		214	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
		215	#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
		216	|| defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
		217	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		218	#elif __aarch64__
		219	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		220	#elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
		221	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
		222	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
		223	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
		224	#elif defined __s390__ || defined __s390x__
		225	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
		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__
		231	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		232	#elif defined __hppa__
		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")
		243	#endif
		244	#endif
		245	#endif
		246
		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
		264	#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
		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()
		272	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		273	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		274	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		275	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		276	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		277	#elif defined _WIN32
		278	#include <WinNT.h>
		279	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		280	#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		281	#include <mbarrier.h>
		282	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
		283	#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_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)
		299	#endif
		300	#endif
		301
		302	#ifndef ECB_MEMORY_FENCE
		303	#if !ECB_AVOID_PTHREADS
		304	/*
		305	* if you get undefined symbol references to pthread_mutex_lock,
		306	* or failure to find pthread.h, then you should implement
		307	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		308	* OR provide pthread.h and link against the posix thread library
		309	* of your system.
		310	*/
		311	#include <pthread.h>
		312	#define ECB_NEEDS_PTHREADS 1
		313	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		314
		315	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		316	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		317	#endif
		318	#endif
		319
		320	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
		321	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		322	#endif
		323
		324	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
		325	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		326	#endif
		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
		332	/*****************************************************************************/
		333
		334	#if ECB_CPP
		335	#define ecb_inline static inline
		336	#elif ECB_GCC_VERSION(2,5)
		337	#define ecb_inline static __inline__
		338	#elif ECB_C99
		339	#define ecb_inline static inline
		340	#else
		341	#define ecb_inline static
		342	#endif
		343
		344	#if ECB_GCC_VERSION(3,3)
		345	#define ecb_restrict __restrict__
		346	#elif ECB_C99
		347	#define ecb_restrict restrict
		348	#else
		349	#define ecb_restrict
		350	#endif
		351
43	typedef int ecb_bool;	352	typedef int ecb_bool;
44	# endif
45	#endif
46		353
47	#define ECB_CONCAT_(a, b) a ## b	354	#define ECB_CONCAT_(a, b) a ## b
48	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	355	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
49	#define ECB_STRINGIFY_(a) # a	356	#define ECB_STRINGIFY_(a) # a
50	#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))
51		359
52	#define ECB_HEADER_INLINE static ECB_INLINE	360	#define ecb_function_ ecb_inline
53		361
54	#if ECB_GCC_VERSION(3,1)	362	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
55	# 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)
56	# define ecb_is_constant(c) __builtin_constant_p (c)	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)
57	# 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)
58	# define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	385	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
59	#else	386	#else
60	# define ecb_attribute(attrlist)
61	# define ecb_is_constant(c) 0
62	# define ecb_expect(expr,value) (expr)
63	# define ecb_prefetch(addr,rw,locality)	387	#define ecb_prefetch(addr,rw,locality)
64	#endif	388	#endif
65		389
66	/* no emulation for ecb_decltype */	390	/* no emulation for ecb_decltype */
		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; };
		394	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
		395	#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
		396	#define ecb_decltype(x) __typeof__ (x)
		397	#endif
		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))
67	#if ECB_GCC_VERSION(4,5)	407	#elif ECB_GCC_VERSION(4,5)
68	# define ecb_decltype(x) __decltype(x)	408	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
69	#elif ECB_GCC_VERSION(3,0)	409	#else
70	# define ecb_decltype(x) typeof(x)	410	#define ecb_deprecated_message(msg) ecb_deprecated
71	#endif	411	#endif
72		412
		413	#if _MSC_VER >= 1400
		414	#define ecb_noinline __declspec (noinline)
		415	#else
73	#define ecb_noinline ecb_attribute ((noinline))	416	#define ecb_noinline ecb_attribute ((__noinline__))
74	#define ecb_noreturn ecb_attribute ((noreturn))	417	#endif
		418
75	#define ecb_unused ecb_attribute ((unused))	419	#define ecb_unused ecb_attribute ((__unused__))
76	#define ecb_const ecb_attribute ((const))	420	#define ecb_const ecb_attribute ((__const__))
77	#define ecb_pure ecb_attribute ((pure))	421	#define ecb_pure ecb_attribute ((__pure__))
78	#define ecb_hot ecb_attribute ((hot)) /* 4.3 */
79	#define ecb_cold ecb_attribute ((cold)) /* 4.3 */
80		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
		434
81	#if ECB_GCC_VERSION(4,5)	435	#if ECB_GCC_VERSION(4,3)
		436	#define ecb_artificial ecb_attribute ((__artificial__))
		437	#define ecb_hot ecb_attribute ((__hot__))
		438	#define ecb_cold ecb_attribute ((__cold__))
		439	#else
		440	#define ecb_artificial
		441	#define ecb_hot
		442	#define ecb_cold
		443	#endif
		444
		445	/* put around conditional expressions if you are very sure that the */
		446	/* expression is mostly true or mostly false. note that these return */
		447	/* booleans, not the expression. */
		448	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
		449	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		450	/* for compatibility to the rest of the world */
		451	#define ecb_likely(expr) ecb_expect_true (expr)
		452	#define ecb_unlikely(expr) ecb_expect_false (expr)
		453
		454	/* count trailing zero bits and count # of one bits */
		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))
		459	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		460	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		461	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
		462	#define ecb_ctz32(x) __builtin_ctz (x)
		463	#define ecb_ctz64(x) __builtin_ctzll (x)
		464	#define ecb_popcount32(x) __builtin_popcount (x)
		465	/* no popcountll */
		466	#else
		467	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
		468	ecb_function_ ecb_const int
		469	ecb_ctz32 (uint32_t x)
		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
		476	int r = 0;
		477
		478	x &= ~x + 1; /* this isolates the lowest bit */
		479
		480	#if ECB_branchless_on_i386
		481	r += !!(x & 0xaaaaaaaa) << 0;
		482	r += !!(x & 0xcccccccc) << 1;
		483	r += !!(x & 0xf0f0f0f0) << 2;
		484	r += !!(x & 0xff00ff00) << 3;
		485	r += !!(x & 0xffff0000) << 4;
		486	#else
		487	if (x & 0xaaaaaaaa) r += 1;
		488	if (x & 0xcccccccc) r += 2;
		489	if (x & 0xf0f0f0f0) r += 4;
		490	if (x & 0xff00ff00) r += 8;
		491	if (x & 0xffff0000) r += 16;
		492	#endif
		493
		494	return r;
		495	#endif
		496	}
		497
		498	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
		499	ecb_function_ ecb_const int
		500	ecb_ctz64 (uint64_t x)
		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
		507	int shift = x & 0xffffffff ? 0 : 32;
		508	return ecb_ctz32 (x >> shift) + shift;
		509	#endif
		510	}
		511
		512	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
		513	ecb_function_ ecb_const int
		514	ecb_popcount32 (uint32_t x)
		515	{
		516	x -= (x >> 1) & 0x55555555;
		517	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		518	x = ((x >> 4) + x) & 0x0f0f0f0f;
		519	x *= 0x01010101;
		520
		521	return x >> 24;
		522	}
		523
		524	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
		525	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
		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
		532	int r = 0;
		533
		534	if (x >> 16) { x >>= 16; r += 16; }
		535	if (x >> 8) { x >>= 8; r += 8; }
		536	if (x >> 4) { x >>= 4; r += 4; }
		537	if (x >> 2) { x >>= 2; r += 2; }
		538	if (x >> 1) { r += 1; }
		539
		540	return r;
		541	#endif
		542	}
		543
		544	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
		545	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
		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
		552	int r = 0;
		553
		554	if (x >> 32) { x >>= 32; r += 32; }
		555
		556	return r + ecb_ld32 (x);
		557	#endif
		558	}
		559	#endif
		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
		566	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
		567	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
		568	{
		569	return ( (x * 0x0802U & 0x22110U)
		570	| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
		571	}
		572
		573	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
		574	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
		575	{
		576	x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
		577	x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
		578	x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
		579	x = ( x >> 8 ) | ( x << 8);
		580
		581	return x;
		582	}
		583
		584	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
		585	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
		586	{
		587	x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
		588	x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
		589	x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
		590	x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
		591	x = ( x >> 16 ) | ( x << 16);
		592
		593	return x;
		594	}
		595
		596	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		597	/* so for this version we are lazy */
		598	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
		599	ecb_function_ ecb_const int
		600	ecb_popcount64 (uint64_t x)
		601	{
		602	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		603	}
		604
		605	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
		606	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
		607	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
		608	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
		609	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
		610	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
		611	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
		612	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
		613
		614	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> (-count & 7)) | (x << (count & 7)); }
		615	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << (-count & 7)) | (x >> (count & 7)); }
		616	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (-count & 15)) | (x << (count & 15)); }
		617	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (-count & 15)) | (x >> (count & 15)); }
		618	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (-count & 31)) | (x << (count & 31)); }
		619	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (-count & 31)) | (x >> (count & 31)); }
		620	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (-count & 63)) | (x << (count & 63)); }
		621	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (-count & 63)) | (x >> (count & 63)); }
		622
		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
		665	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		666	#endif
		667	#define ecb_bswap32(x) __builtin_bswap32 (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)))
		674	#else
		675	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
		676	ecb_function_ ecb_const uint16_t
		677	ecb_bswap16 (uint16_t x)
		678	{
		679	return ecb_rotl16 (x, 8);
		680	}
		681
		682	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
		683	ecb_function_ ecb_const uint32_t
		684	ecb_bswap32 (uint32_t x)
		685	{
		686	return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
		687	}
		688
		689	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
		690	ecb_function_ ecb_const uint64_t
		691	ecb_bswap64 (uint64_t x)
		692	{
		693	return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
		694	}
		695	#endif
		696
		697	#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
82	# define ecb_unreachable() __builtin_unreachable ()	698	#define ecb_unreachable() __builtin_unreachable ()
83	#else	699	#else
84	/* 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 :/ */
85	ECB_HEADER_INLINE void ecb_unreachable () ecb_attribute ((noreturn));	701	ecb_inline ecb_noreturn void ecb_unreachable (void);
86	ECB_HEADER_INLINE void ecb_unreachable () { }	702	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
87	#endif	703	#endif
88
89	/* put into ifs if you are very sure that the expression */
90	/* is mostly true or mosty false. note that these return */
91	/* booleans, not the expression. */
92	#define ecb_unlikely(expr) ecb_expect (!!(expr), 0)
93	#define ecb_likely(expr) ecb_expect (!!(expr), 1)
94		704
95	/* try to tell the compiler that some condition is definitely true */	705	/* try to tell the compiler that some condition is definitely true */
96	#define ecb_assume(cond) do { if (!(cond)) unreachable (); } while (0)	706	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
97		707
98	/* count trailing zero bits and count # of one bits */	708	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
99	#if ECB_GCC_VERSION(3,4)	709	ecb_inline ecb_const uint32_t
100	ECB_HEADER_INLINE int ecb_ctz32 (uint32_t x) { return __builtin_ctz (x); }	710	ecb_byteorder_helper (void)
101	ECB_HEADER_INLINE int ecb_popcount32 (uint32_t x) { return __builtin_popcount (x); }
102	#else
103	ECB_HEADER_INLINE
104	ecb_ctz32 (uint32_t x) ecb_const
105	{	711	{
106	int r = 0;	712	/* the union code still generates code under pressure in gcc, */
		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
		734	}
107		735
108	x &= -x; /* this isolates the lowest bit */	736	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
		737	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
		738	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
		739	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
109		740
110	if (x & 0xaaaaaaaa) r += 1;	741	/*****************************************************************************/
111	if (x & 0xcccccccc) r += 2;	742	/* unaligned load/store */
112	if (x & 0xf0f0f0f0) r += 4;
113	if (x & 0xff00ff00) r += 8;
114	if (x & 0xffff0000) r += 16;
115		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	/* pointer/integer hashing */
		813
		814	/* based on hash by Chris Wellons, https://nullprogram.com/blog/2018/07/31/ */
		815	ecb_function_ uint32_t ecb_mix32 (uint32_t v);
		816	ecb_function_ uint32_t ecb_mix32 (uint32_t v)
		817	{
		818	v ^= v >> 16; v *= 0x7feb352dU;
		819	v ^= v >> 15; v *= 0x846ca68bU;
		820	v ^= v >> 16;
116	return r;	821	return v;
117	}	822	}
118		823
119	ECB_HEADER_INLINE	824	ecb_function_ uint32_t ecb_unmix32 (uint32_t v);
120	ecb_popcount32 (uint32_t x) ecb_const	825	ecb_function_ uint32_t ecb_unmix32 (uint32_t v)
121	{	826	{
122	x -= (x >> 1) & 0x55555555;	827	v ^= v >> 16 ; v *= 0x43021123U;
123	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	828	v ^= v >> 15 ^ v >> 30; v *= 0x1d69e2a5U;
124	x = ((x >> 4) + x) & 0x0f0f0f0f;	829	v ^= v >> 16 ;
125	x *= 0x01010101;	830	return v;
126
127	return x >> 24;
128	}	831	}
		832
		833	/* based on splitmix64, by Sebastiona Vigna, https://prng.di.unimi.it/splitmix64.c */
		834	ecb_function_ uint64_t ecb_mix64 (uint64_t v);
		835	ecb_function_ uint64_t ecb_mix64 (uint64_t v)
		836	{
		837	v ^= v >> 30; v *= 0xbf58476d1ce4e5b9U;
		838	v ^= v >> 27; v *= 0x94d049bb133111ebU;
		839	v ^= v >> 31;
		840	return v;
		841	}
		842
		843	ecb_function_ uint64_t ecb_unmix64 (uint64_t v);
		844	ecb_function_ uint64_t ecb_unmix64 (uint64_t v)
		845	{
		846	v ^= v >> 31 ^ v >> 62; v *= 0x319642b2d24d8ec3U;
		847	v ^= v >> 27 ^ v >> 54; v *= 0x96de1b173f119089U;
		848	v ^= v >> 30 ^ v >> 60;
		849	return v;
		850	}
		851
		852	ecb_function_ uintptr_t ecb_ptrmix (void *p);
		853	ecb_function_ uintptr_t ecb_ptrmix (void *p)
		854	{
		855	#if ECB_PTRSIZE <= 4
		856	return ecb_mix32 ((uint32_t)p);
		857	#else
		858	return ecb_mix64 ((uint64_t)p);
129	#endif	859	#endif
130
131	ECB_HEADER_INLINE unsigned char
132	ecb_byteorder_helper () ecb_const
133	{
134	const uint32_t u = 0x11223344;
135	return *(unsigned char *)&u;
136	}	860	}
137		861
138	ECB_HEADER_INLINE ecb_bool ecb_big_endian () ecb_const { return ecb_byteorder_helper () == 0x11; };	862	ecb_function_ void *ecb_ptrunmix (uintptr_t v);
139	ECB_HEADER_INLINE ecb_bool ecb_little_endian () ecb_const { return ecb_byteorder_helper () == 0x44; };	863	ecb_function_ void *ecb_ptrunmix (uintptr_t v)
		864	{
		865	#if ECB_PTRSIZE <= 4
		866	return (void *)ecb_unmix32 (v);
		867	#else
		868	return (void *)ecb_unmix64 (v);
		869	#endif
		870	}
		871
		872	#if ECB_CPP
		873
		874	template<typename T>
		875	inline uintptr_t ecb_ptrmix (T *p)
		876	{
		877	return ecb_ptrmix (static_cast<void *>(p));
		878	}
		879
		880	template<typename T>
		881	inline T *ecb_ptrunmix (uintptr_t v)
		882	{
		883	return static_cast<T *>(ecb_ptrunmix (v));
		884	}
		885
		886	#endif
		887
		888	/*****************************************************************************/
		889	/* gray code */
		890
		891	ecb_function_ uint_fast8_t ecb_gray8_encode (uint_fast8_t b) { return b ^ (b >> 1); }
		892	ecb_function_ uint_fast16_t ecb_gray16_encode (uint_fast16_t b) { return b ^ (b >> 1); }
		893	ecb_function_ uint_fast32_t ecb_gray32_encode (uint_fast32_t b) { return b ^ (b >> 1); }
		894	ecb_function_ uint_fast64_t ecb_gray64_encode (uint_fast64_t b) { return b ^ (b >> 1); }
		895
		896	ecb_function_ uint8_t ecb_gray8_decode (uint8_t g)
		897	{
		898	g = g ^ (g >> 1);
		899	g = g ^ (g >> 2);
		900	g = g ^ (g >> 4);
		901	return g;
		902	}
		903
		904	ecb_function_ uint16_t ecb_gray16_decode (uint16_t g)
		905	{
		906	g = g ^ (g >> 1);
		907	g = g ^ (g >> 2);
		908	g = g ^ (g >> 4);
		909	g = g ^ (g >> 8);
		910	return g;
		911	}
		912
		913	ecb_function_ uint32_t ecb_gray32_decode (uint32_t g)
		914	{
		915	g = g ^ (g >> 1);
		916	g = g ^ (g >> 2);
		917	g = g ^ (g >> 4);
		918	g = g ^ (g >> 8);
		919	g = g ^ (g >> 16);
		920	return g;
		921	}
		922
		923	ecb_function_ uint64_t ecb_gray64_decode (uint64_t g)
		924	{
		925	g = g ^ (g >> 1);
		926	g = g ^ (g >> 2);
		927	g = g ^ (g >> 4);
		928	g = g ^ (g >> 8);
		929	g = g ^ (g >> 16);
		930	g = g ^ (g >> 32);
		931	return g;
		932	}
		933
		934	#if ECB_CPP
		935
		936	ecb_function_ uint8_t ecb_gray_encode (uint8_t b) { return ecb_gray8_encode (b); }
		937	ecb_function_ uint16_t ecb_gray_encode (uint16_t b) { return ecb_gray16_encode (b); }
		938	ecb_function_ uint32_t ecb_gray_encode (uint32_t b) { return ecb_gray32_encode (b); }
		939	ecb_function_ uint64_t ecb_gray_encode (uint64_t b) { return ecb_gray64_encode (b); }
		940
		941	ecb_function_ uint8_t ecb_gray_decode (uint8_t g) { return ecb_gray8_decode (g); }
		942	ecb_function_ uint16_t ecb_gray_decode (uint16_t g) { return ecb_gray16_decode (g); }
		943	ecb_function_ uint32_t ecb_gray_decode (uint32_t g) { return ecb_gray32_decode (g); }
		944	ecb_function_ uint64_t ecb_gray_decode (uint64_t g) { return ecb_gray64_decode (g); }
		945
		946	#endif
		947
		948	/*****************************************************************************/
		949	/* division */
		950
		951	#if ECB_GCC_VERSION(3,0) || ECB_C99
		952	/* C99 tightened the definition of %, so we can use a more efficient version */
		953	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		954	#else
		955	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		956	#endif
		957
		958	#if ECB_CPP
		959	template<typename T>
		960	static inline T ecb_div_rd (T val, T div)
		961	{
		962	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
		963	}
		964	template<typename T>
		965	static inline T ecb_div_ru (T val, T div)
		966	{
		967	return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
		968	}
		969	#else
		970	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
		971	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
		972	#endif
		973
		974	/*****************************************************************************/
		975	/* array length */
140		976
141	#if ecb_cplusplus_does_not_suck	977	#if ecb_cplusplus_does_not_suck
142	// does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm)	978	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
143	template<typename T, int N>	979	template<typename T, int N>
144	static inline int ecb_array_length (const T (&arr)[N])	980	static inline int ecb_array_length (const T (&arr)[N])
145	{	981	{
146	return N;	982	return N;
147	}	983	}
148	#else	984	#else
149	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	985	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		986	#endif
		987
		988	/*****************************************************************************/
		989	/* IEEE 754-2008 half float conversions */
		990
		991	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		992	ecb_function_ ecb_const uint32_t
		993	ecb_binary16_to_binary32 (uint32_t x)
		994	{
		995	unsigned int s = (x & 0x8000) << (31 - 15);
		996	int e = (x >> 10) & 0x001f;
		997	unsigned int m = x & 0x03ff;
		998
		999	if (ecb_expect_false (e == 31))
		1000	/* infinity or NaN */
		1001	e = 255 - (127 - 15);
		1002	else if (ecb_expect_false (!e))
		1003	{
		1004	if (ecb_expect_true (!m))
		1005	/* zero, handled by code below by forcing e to 0 */
		1006	e = 0 - (127 - 15);
		1007	else
		1008	{
		1009	/* subnormal, renormalise */
		1010	unsigned int s = 10 - ecb_ld32 (m);
		1011
		1012	m = (m << s) & 0x3ff; /* mask implicit bit */
		1013	e -= s - 1;
		1014	}
		1015	}
		1016
		1017	/* e and m now are normalised, or zero, (or inf or nan) */
		1018	e += 127 - 15;
		1019
		1020	return s | (e << 23) | (m << (23 - 10));
		1021	}
		1022
		1023	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		1024	ecb_function_ ecb_const uint16_t
		1025	ecb_binary32_to_binary16 (uint32_t x)
		1026	{
		1027	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		1028	int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		1029	unsigned int m = x & 0x007fffff;
		1030
		1031	x &= 0x7fffffff;
		1032
		1033	/* if it's within range of binary16 normals, use fast path */
		1034	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		1035	{
		1036	/* mantissa round-to-even */
		1037	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		1038
		1039	/* handle overflow */
		1040	if (ecb_expect_false (m >= 0x00800000))
		1041	{
		1042	m >>= 1;
		1043	e += 1;
		1044	}
		1045
		1046	return s | (e << 10) | (m >> (23 - 10));
		1047	}
		1048
		1049	/* handle large numbers and infinity */
		1050	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		1051	return s | 0x7c00;
		1052
		1053	/* handle zero, subnormals and small numbers */
		1054	if (ecb_expect_true (x < 0x38800000))
		1055	{
		1056	/* zero */
		1057	if (ecb_expect_true (!x))
		1058	return s;
		1059
		1060	/* handle subnormals */
		1061
		1062	/* too small, will be zero */
		1063	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		1064	return s;
		1065
		1066	m |= 0x00800000; /* make implicit bit explicit */
		1067
		1068	/* very tricky - we need to round to the nearest e (+10) bit value */
		1069	{
		1070	unsigned int bits = 14 - e;
		1071	unsigned int half = (1 << (bits - 1)) - 1;
		1072	unsigned int even = (m >> bits) & 1;
		1073
		1074	/* if this overflows, we will end up with a normalised number */
		1075	m = (m + half + even) >> bits;
		1076	}
		1077
		1078	return s | m;
		1079	}
		1080
		1081	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		1082	m >>= 13;
		1083
		1084	return s | 0x7c00 | m | !m;
		1085	}
		1086
		1087	/*******************************************************************************/
		1088	/* fast integer to ascii */
		1089
		1090	/*
		1091	* This code is pretty complicated because it is general. The idea behind it,
		1092	* however, is pretty simple: first, the number is multiplied with a scaling
		1093	* factor (2**bits / 10**(digits-1)) to convert the integer into a fixed-point
		1094	* number with the first digit in the upper bits.
		1095	* Then this digit is converted to text and masked out. The resulting number
		1096	* is then multiplied by 10, by multiplying the fixed point representation
		1097	* by 5 and shifting the (binary) decimal point one to the right, so a 4.28
		1098	* format becomes 5.27, 6.26 and so on.
		1099	* The rest involves only advancing the pointer if we already generated a
		1100	* non-zero digit, so leading zeroes are overwritten.
		1101	*/
		1102
		1103	/* simply return a mask with "bits" bits set */
		1104	#define ecb_i2a_mask(type,bits) ((((type)1) << (bits)) - 1)
		1105
		1106	/* oputput a single digit. maskvalue is 10**digitidx */
		1107	#define ecb_i2a_digit(type,bits,digitmask,maskvalue,digitidx) \
		1108	if (digitmask >= maskvalue) /* constant, used to decide how many digits to generate */ \
		1109	{ \
		1110	char digit = x >> (bits - digitidx); /* calculate the topmost digit */ \
		1111	*ptr = digit + '0'; /* output it */ \
		1112	nz = (digitmask == maskvalue) || nz || digit; /* first term == always output last digit */ \
		1113	ptr += nz; /* output digit only if non-zero digit seen */ \
		1114	x = (x & ecb_i2a_mask (type, bits - digitidx)) * 5; /* *10, but shift decimal point right */ \
		1115	}
		1116
		1117	/* convert integer to fixed point format and multiply out digits, highest first */
		1118	/* requires magic constants: max. digits and number of bits after the decimal point */
		1119	#define ecb_i2a_def(suffix,ptr,v,type,bits,digitmask,lz) \
		1120	ecb_inline char *ecb_i2a_ ## suffix (char *ptr, uint32_t u) \
		1121	{ \
		1122	char nz = lz; /* non-zero digit seen? */ \
		1123	/* convert to x.bits fixed-point */ \
		1124	type x = u * ((ecb_i2a_mask (type, bits) + digitmask) / digitmask); \
		1125	/* output up to 10 digits */ \
		1126	ecb_i2a_digit (type,bits,digitmask, 1, 0); \
		1127	ecb_i2a_digit (type,bits,digitmask, 10, 1); \
		1128	ecb_i2a_digit (type,bits,digitmask, 100, 2); \
		1129	ecb_i2a_digit (type,bits,digitmask, 1000, 3); \
		1130	ecb_i2a_digit (type,bits,digitmask, 10000, 4); \
		1131	ecb_i2a_digit (type,bits,digitmask, 100000, 5); \
		1132	ecb_i2a_digit (type,bits,digitmask, 1000000, 6); \
		1133	ecb_i2a_digit (type,bits,digitmask, 10000000, 7); \
		1134	ecb_i2a_digit (type,bits,digitmask, 100000000, 8); \
		1135	ecb_i2a_digit (type,bits,digitmask, 1000000000, 9); \
		1136	return ptr; \
		1137	}
		1138
		1139	/* predefined versions of the above, for various digits */
		1140	/* ecb_i2a_xN = almost N digits, limit defined by macro */
		1141	/* ecb_i2a_N = up to N digits, leading zeroes suppressed */
		1142	/* ecb_i2a_0N = exactly N digits, including leading zeroes */
		1143
		1144	/* non-leading-zero versions, limited range */
		1145	#define ECB_I2A_MAX_X5 59074 /* limit for ecb_i2a_x5 */
		1146	#define ECB_I2A_MAX_X10 2932500665 /* limit for ecb_i2a_x10 */
		1147	ecb_i2a_def ( x5, ptr, v, uint32_t, 26, 10000, 0)
		1148	ecb_i2a_def (x10, ptr, v, uint64_t, 60, 1000000000, 0)
		1149
		1150	/* non-leading zero versions, all digits, 4 and 9 are optimal for 32/64 bit */
		1151	ecb_i2a_def ( 2, ptr, v, uint32_t, 10, 10, 0)
		1152	ecb_i2a_def ( 3, ptr, v, uint32_t, 12, 100, 0)
		1153	ecb_i2a_def ( 4, ptr, v, uint32_t, 26, 1000, 0)
		1154	ecb_i2a_def ( 5, ptr, v, uint64_t, 30, 10000, 0)
		1155	ecb_i2a_def ( 6, ptr, v, uint64_t, 36, 100000, 0)
		1156	ecb_i2a_def ( 7, ptr, v, uint64_t, 44, 1000000, 0)
		1157	ecb_i2a_def ( 8, ptr, v, uint64_t, 50, 10000000, 0)
		1158	ecb_i2a_def ( 9, ptr, v, uint64_t, 56, 100000000, 0)
		1159
		1160	/* leading-zero versions, all digits, 04 and 09 are optimal for 32/64 bit */
		1161	ecb_i2a_def (02, ptr, v, uint32_t, 10, 10, 1)
		1162	ecb_i2a_def (03, ptr, v, uint32_t, 12, 100, 1)
		1163	ecb_i2a_def (04, ptr, v, uint32_t, 26, 1000, 1)
		1164	ecb_i2a_def (05, ptr, v, uint64_t, 30, 10000, 1)
		1165	ecb_i2a_def (06, ptr, v, uint64_t, 36, 100000, 1)
		1166	ecb_i2a_def (07, ptr, v, uint64_t, 44, 1000000, 1)
		1167	ecb_i2a_def (08, ptr, v, uint64_t, 50, 10000000, 1)
		1168	ecb_i2a_def (09, ptr, v, uint64_t, 56, 100000000, 1)
		1169
		1170	#define ECB_I2A_I32_DIGITS 11
		1171	#define ECB_I2A_U32_DIGITS 10
		1172	#define ECB_I2A_I64_DIGITS 20
		1173	#define ECB_I2A_U64_DIGITS 21
		1174	#define ECB_I2A_MAX_DIGITS 21
		1175
		1176	ecb_inline char *
		1177	ecb_i2a_u32 (char *ptr, uint32_t u)
		1178	{
		1179	#if ECB_64BIT_NATIVE
		1180	if (ecb_expect_true (u <= ECB_I2A_MAX_X10))
		1181	ptr = ecb_i2a_x10 (ptr, u);
		1182	else /* x10 almost, but not fully, covers 32 bit */
		1183	{
		1184	uint32_t u1 = u % 1000000000;
		1185	uint32_t u2 = u / 1000000000;
		1186
		1187	*ptr++ = u2 + '0';
		1188	ptr = ecb_i2a_09 (ptr, u1);
		1189	}
		1190	#else
		1191	if (ecb_expect_true (u <= ECB_I2A_MAX_X5))
		1192	ecb_i2a_x5 (ptr, u);
		1193	else if (ecb_expect_true (u <= ECB_I2A_MAX_X5 * 10000))
		1194	{
		1195	uint32_t u1 = u % 10000;
		1196	uint32_t u2 = u / 10000;
		1197
		1198	ptr = ecb_i2a_x5 (ptr, u2);
		1199	ptr = ecb_i2a_04 (ptr, u1);
		1200	}
		1201	else
		1202	{
		1203	uint32_t u1 = u % 10000;
		1204	uint32_t ua = u / 10000;
		1205	uint32_t u2 = ua % 10000;
		1206	uint32_t u3 = ua / 10000;
		1207
		1208	ptr = ecb_i2a_2 (ptr, u3);
		1209	ptr = ecb_i2a_04 (ptr, u2);
		1210	ptr = ecb_i2a_04 (ptr, u1);
		1211	}
150	#endif	1212	#endif
151		1213
152	ECB_INLINE uint32_t	1214	return ptr;
153	ecb_rotr32 (uint32_t x, unsigned int count)
154	{
155	return (x << (32 - count)) | (x >> count);
156	}	1215	}
157		1216
158	ECB_INLINE uint32_t	1217	ecb_inline char *
159	ecb_rotl32 (uint32_t x, unsigned int count)	1218	ecb_i2a_i32 (char *ptr, int32_t v)
160	{	1219	{
161	return (x >> (32 - count)) | (x << count);	1220	*ptr = '-'; ptr += v < 0;
162	}	1221	uint32_t u = v < 0 ? -(uint32_t)v : v;
163		1222
164	#if ECB_GCC_VERSION(4,3)	1223	#if ECB_64BIT_NATIVE
165	# define ecb_bswap32(x) __builtin_bswap32 (x)	1224	ptr = ecb_i2a_x10 (ptr, u); /* x10 fully covers 31 bit */
166	#else	1225	#else
167	ECB_GCC_VERSION uint32_t	1226	ptr = ecb_i2a_u32 (ptr, u);
168	ecb_bswap32 (uint32_t x)
169	{
170	return (x >> 24)
171	| ((x >> 8) & 0x0000ff00)
172	| ((x << 8) & 0x00ff0000)
173	| (x << 24);
174	}
175	#endif	1227	#endif
176		1228
		1229	return ptr;
		1230	}
		1231
		1232	ecb_inline char *
		1233	ecb_i2a_u64 (char *ptr, uint64_t u)
		1234	{
		1235	#if ECB_64BIT_NATIVE
		1236	if (ecb_expect_true (u <= ECB_I2A_MAX_X10))
		1237	ptr = ecb_i2a_x10 (ptr, u);
		1238	else if (ecb_expect_false (u <= ECB_I2A_MAX_X10 * 1000000000))
		1239	{
		1240	uint64_t u1 = u % 1000000000;
		1241	uint64_t u2 = u / 1000000000;
		1242
		1243	ptr = ecb_i2a_x10 (ptr, u2);
		1244	ptr = ecb_i2a_09 (ptr, u1);
		1245	}
		1246	else
		1247	{
		1248	uint64_t u1 = u % 1000000000;
		1249	uint64_t ua = u / 1000000000;
		1250	uint64_t u2 = ua % 1000000000;
		1251	uint64_t u3 = ua / 1000000000;
		1252
		1253	ptr = ecb_i2a_2 (ptr, u3);
		1254	ptr = ecb_i2a_09 (ptr, u2);
		1255	ptr = ecb_i2a_09 (ptr, u1);
		1256	}
		1257	#else
		1258	if (ecb_expect_true (u <= ECB_I2A_MAX_X5))
		1259	ptr = ecb_i2a_x5 (ptr, u);
		1260	else
		1261	{
		1262	uint64_t u1 = u % 10000;
		1263	uint64_t u2 = u / 10000;
		1264
		1265	ptr = ecb_i2a_u64 (ptr, u2);
		1266	ptr = ecb_i2a_04 (ptr, u1);
		1267	}
177	#endif	1268	#endif
178		1269
		1270	return ptr;
		1271	}
		1272
		1273	ecb_inline char *
		1274	ecb_i2a_i64 (char *ptr, int64_t v)
		1275	{
		1276	*ptr = '-'; ptr += v < 0;
		1277	uint64_t u = v < 0 ? -(uint64_t)v : v;
		1278
		1279	#if ECB_64BIT_NATIVE
		1280	if (ecb_expect_true (u <= ECB_I2A_MAX_X10))
		1281	ptr = ecb_i2a_x10 (ptr, u);
		1282	else if (ecb_expect_false (u <= ECB_I2A_MAX_X10 * 1000000000))
		1283	{
		1284	uint64_t u1 = u % 1000000000;
		1285	uint64_t u2 = u / 1000000000;
		1286
		1287	ptr = ecb_i2a_x10 (ptr, u2);
		1288	ptr = ecb_i2a_09 (ptr, u1);
		1289	}
		1290	else
		1291	{
		1292	uint64_t u1 = u % 1000000000;
		1293	uint64_t ua = u / 1000000000;
		1294	uint64_t u2 = ua % 1000000000;
		1295	uint64_t u3 = ua / 1000000000;
		1296
		1297	/* 2**31 is 19 digits, so the top is exactly one digit */
		1298	*ptr++ = u3 + '0';
		1299	ptr = ecb_i2a_09 (ptr, u2);
		1300	ptr = ecb_i2a_09 (ptr, u1);
		1301	}
		1302	#else
		1303	ptr = ecb_i2a_u64 (ptr, u);
		1304	#endif
		1305
		1306	return ptr;
		1307	}
		1308
		1309	/*******************************************************************************/
		1310	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1311
		1312	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1313	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1314	#if 0 \
		1315	|| __i386 || __i386__ \
		1316	|| ECB_GCC_AMD64 \
		1317	|| __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
		1318	|| defined __s390__ || defined __s390x__ \
		1319	|| defined __mips__ \
		1320	|| defined __alpha__ \
		1321	|| defined __hppa__ \
		1322	|| defined __ia64__ \
		1323	|| defined __m68k__ \
		1324	|| defined __m88k__ \
		1325	|| defined __sh__ \
		1326	|| defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
		1327	|| (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
		1328	|| defined __aarch64__
		1329	#define ECB_STDFP 1
		1330	#else
		1331	#define ECB_STDFP 0
		1332	#endif
		1333
		1334	#ifndef ECB_NO_LIBM
		1335
		1336	#include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
		1337
		1338	/* only the oldest of old doesn't have this one. solaris. */
		1339	#ifdef INFINITY
		1340	#define ECB_INFINITY INFINITY
		1341	#else
		1342	#define ECB_INFINITY HUGE_VAL
		1343	#endif
		1344
		1345	#ifdef NAN
		1346	#define ECB_NAN NAN
		1347	#else
		1348	#define ECB_NAN ECB_INFINITY
		1349	#endif
		1350
		1351	#if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
		1352	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		1353	#define ecb_frexpf(x,e) frexpf ((x), (e))
		1354	#else
		1355	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		1356	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		1357	#endif
		1358
		1359	/* convert a float to ieee single/binary32 */
		1360	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
		1361	ecb_function_ ecb_const uint32_t
		1362	ecb_float_to_binary32 (float x)
		1363	{
		1364	uint32_t r;
		1365
		1366	#if ECB_STDFP
		1367	memcpy (&r, &x, 4);
		1368	#else
		1369	/* slow emulation, works for anything but -0 */
		1370	uint32_t m;
		1371	int e;
		1372
		1373	if (x == 0e0f ) return 0x00000000U;
		1374	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1375	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1376	if (x != x ) return 0x7fbfffffU;
		1377
		1378	m = ecb_frexpf (x, &e) * 0x1000000U;
		1379
		1380	r = m & 0x80000000U;
		1381
		1382	if (r)
		1383	m = -m;
		1384
		1385	if (e <= -126)
		1386	{
		1387	m &= 0xffffffU;
		1388	m >>= (-125 - e);
		1389	e = -126;
		1390	}
		1391
		1392	r |= (e + 126) << 23;
		1393	r |= m & 0x7fffffU;
		1394	#endif
		1395
		1396	return r;
		1397	}
		1398
		1399	/* converts an ieee single/binary32 to a float */
		1400	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
		1401	ecb_function_ ecb_const float
		1402	ecb_binary32_to_float (uint32_t x)
		1403	{
		1404	float r;
		1405
		1406	#if ECB_STDFP
		1407	memcpy (&r, &x, 4);
		1408	#else
		1409	/* emulation, only works for normals and subnormals and +0 */
		1410	int neg = x >> 31;
		1411	int e = (x >> 23) & 0xffU;
		1412
		1413	x &= 0x7fffffU;
		1414
		1415	if (e)
		1416	x |= 0x800000U;
		1417	else
		1418	e = 1;
		1419
		1420	/* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
		1421	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
		1422
		1423	r = neg ? -r : r;
		1424	#endif
		1425
		1426	return r;
		1427	}
		1428
		1429	/* convert a double to ieee double/binary64 */
		1430	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
		1431	ecb_function_ ecb_const uint64_t
		1432	ecb_double_to_binary64 (double x)
		1433	{
		1434	uint64_t r;
		1435
		1436	#if ECB_STDFP
		1437	memcpy (&r, &x, 8);
		1438	#else
		1439	/* slow emulation, works for anything but -0 */
		1440	uint64_t m;
		1441	int e;
		1442
		1443	if (x == 0e0 ) return 0x0000000000000000U;
		1444	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1445	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1446	if (x != x ) return 0X7ff7ffffffffffffU;
		1447
		1448	m = frexp (x, &e) * 0x20000000000000U;
		1449
		1450	r = m & 0x8000000000000000;;
		1451
		1452	if (r)
		1453	m = -m;
		1454
		1455	if (e <= -1022)
		1456	{
		1457	m &= 0x1fffffffffffffU;
		1458	m >>= (-1021 - e);
		1459	e = -1022;
		1460	}
		1461
		1462	r |= ((uint64_t)(e + 1022)) << 52;
		1463	r |= m & 0xfffffffffffffU;
		1464	#endif
		1465
		1466	return r;
		1467	}
		1468
		1469	/* converts an ieee double/binary64 to a double */
		1470	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
		1471	ecb_function_ ecb_const double
		1472	ecb_binary64_to_double (uint64_t x)
		1473	{
		1474	double r;
		1475
		1476	#if ECB_STDFP
		1477	memcpy (&r, &x, 8);
		1478	#else
		1479	/* emulation, only works for normals and subnormals and +0 */
		1480	int neg = x >> 63;
		1481	int e = (x >> 52) & 0x7ffU;
		1482
		1483	x &= 0xfffffffffffffU;
		1484
		1485	if (e)
		1486	x |= 0x10000000000000U;
		1487	else
		1488	e = 1;
		1489
		1490	/* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
		1491	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1492
		1493	r = neg ? -r : r;
		1494	#endif
		1495
		1496	return r;
		1497	}
		1498
		1499	/* convert a float to ieee half/binary16 */
		1500	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1501	ecb_function_ ecb_const uint16_t
		1502	ecb_float_to_binary16 (float x)
		1503	{
		1504	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1505	}
		1506
		1507	/* convert an ieee half/binary16 to float */
		1508	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1509	ecb_function_ ecb_const float
		1510	ecb_binary16_to_float (uint16_t x)
		1511	{
		1512	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1513	}
		1514
		1515	#endif
		1516
		1517	#endif
		1518

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