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

Comparing libecb/ecb.h (file contents):
Revision 1.91 by root, Tue May 29 14:30:44 2012 UTC vs.
Revision 1.181 by root, Mon Jan 20 13:16:01 2020 UTC

…		…
1	/*	1	/*
2	* libecb - http://software.schmorp.de/pkg/libecb	2	* libecb - http://software.schmorp.de/pkg/libecb
3	*	3	*
4	* Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>	4	* Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
5	* Copyright (©) 2011 Emanuele Giaquinta	5	* Copyright (©) 2011 Emanuele Giaquinta
6	* All rights reserved.	6	* All rights reserved.
7	*	7	*
8	* Redistribution and use in source and binary forms, with or without modifica-	8	* Redistribution and use in source and binary forms, with or without modifica-
9	* tion, are permitted provided that the following conditions are met:	9	* tion, are permitted provided that the following conditions are met:
23	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;	23	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,	24	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-	25	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
26	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED	26	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
27	* OF THE POSSIBILITY OF SUCH DAMAGE.	27	* OF THE POSSIBILITY OF SUCH DAMAGE.
		28	*
		29	* Alternatively, the contents of this file may be used under the terms of
		30	* the GNU General Public License ("GPL") version 2 or any later version,
		31	* in which case the provisions of the GPL are applicable instead of
		32	* the above. If you wish to allow the use of your version of this file
		33	* only under the terms of the GPL and not to allow others to use your
		34	* version of this file under the BSD license, indicate your decision
		35	* by deleting the provisions above and replace them with the notice
		36	* and other provisions required by the GPL. If you do not delete the
		37	* provisions above, a recipient may use your version of this file under
		38	* either the BSD or the GPL.
28	*/	39	*/
29		40
30	#ifndef ECB_H	41	#ifndef ECB_H
31	#define ECB_H	42	#define ECB_H
32		43
33	/* 16 bits major, 16 bits minor */	44	/* 16 bits major, 16 bits minor */
34	#define ECB_VERSION 0x00010001	45	#define ECB_VERSION 0x00010008
35		46
36	#ifdef _WIN32	47	#ifdef _WIN32
37	typedef signed char int8_t;	48	typedef signed char int8_t;
38	typedef unsigned char uint8_t;	49	typedef unsigned char uint8_t;
		50	typedef signed char int_fast8_t;
		51	typedef unsigned char uint_fast8_t;
39	typedef signed short int16_t;	52	typedef signed short int16_t;
40	typedef unsigned short uint16_t;	53	typedef unsigned short uint16_t;
		54	typedef signed int int_fast16_t;
		55	typedef unsigned int uint_fast16_t;
41	typedef signed int int32_t;	56	typedef signed int int32_t;
42	typedef unsigned int uint32_t;	57	typedef unsigned int uint32_t;
		58	typedef signed int int_fast32_t;
		59	typedef unsigned int uint_fast32_t;
43	#if __GNUC__	60	#if __GNUC__
44	typedef signed long long int64_t;	61	typedef signed long long int64_t;
45	typedef unsigned long long uint64_t;	62	typedef unsigned long long uint64_t;
46	#else /* _MSC_VER \|\| __BORLANDC__ */	63	#else /* _MSC_VER \|\| __BORLANDC__ */
47	typedef signed __int64 int64_t;	64	typedef signed __int64 int64_t;
48	typedef unsigned __int64 uint64_t;	65	typedef unsigned __int64 uint64_t;
49	#endif	66	#endif
		67	typedef int64_t int_fast64_t;
		68	typedef uint64_t uint_fast64_t;
50	#ifdef _WIN64	69	#ifdef _WIN64
51	#define ECB_PTRSIZE 8	70	#define ECB_PTRSIZE 8
52	typedef uint64_t uintptr_t;	71	typedef uint64_t uintptr_t;
53	typedef int64_t intptr_t;	72	typedef int64_t intptr_t;
54	#else	73	#else
55	#define ECB_PTRSIZE 4	74	#define ECB_PTRSIZE 4
56	typedef uint32_t uintptr_t;	75	typedef uint32_t uintptr_t;
57	typedef int32_t intptr_t;	76	typedef int32_t intptr_t;
58	#endif	77	#endif
59	typedef intptr_t ptrdiff_t;
60	#else	78	#else
61	#include <inttypes.h>	79	#include <inttypes.h>
62	#if UINTMAX_MAX > 0xffffffffU	80	#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
63	#define ECB_PTRSIZE 8	81	#define ECB_PTRSIZE 8
64	#else	82	#else
65	#define ECB_PTRSIZE 4	83	#define ECB_PTRSIZE 4
		84	#endif
		85	#endif
		86
		87	#define ECB_GCC_AMD64 (__amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__)
		88	#define ECB_MSVC_AMD64 (_M_AMD64 \|\| _M_X64)
		89
		90	#ifndef ECB_OPTIMIZE_SIZE
		91	#if __OPTIMIZE_SIZE__
		92	#define ECB_OPTIMIZE_SIZE 1
		93	#else
		94	#define ECB_OPTIMIZE_SIZE 0
		95	#endif
		96	#endif
		97
		98	/* work around x32 idiocy by defining proper macros */
		99	#if ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64
		100	#if _ILP32
		101	#define ECB_AMD64_X32 1
		102	#else
		103	#define ECB_AMD64 1
66	#endif	104	#endif
67	#endif	105	#endif
68		106
69	/* many compilers define _GNUC_ to some versions but then only implement	107	/* many compilers define _GNUC_ to some versions but then only implement
70	* what their idiot authors think are the "more important" extensions,	108	* what their idiot authors think are the "more important" extensions,
71	* causing enormous grief in return for some better fake benchmark numbers.	109	* causing enormous grief in return for some better fake benchmark numbers.
72	* or so.	110	* or so.
73	* we try to detect these and simply assume they are not gcc - if they have	111	* we try to detect these and simply assume they are not gcc - if they have
74	* an issue with that they should have done it right in the first place.	112	* an issue with that they should have done it right in the first place.
75	*/	113	*/
76	#ifndef ECB_GCC_VERSION
77	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__	114	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__
78	#define ECB_GCC_VERSION(major,minor) 0	115	#define ECB_GCC_VERSION(major,minor) 0
79	#else	116	#else
80	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	117	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
81	#endif	118	#endif
82	#endif
83		119
84	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */	120	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
85	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	121
86	#define ECB_C11 (__STDC_VERSION__ >= 201112L)	122	#if __clang__ && defined __has_builtin
		123	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		124	#else
		125	#define ECB_CLANG_BUILTIN(x) 0
		126	#endif
		127
		128	#if __clang__ && defined __has_extension
		129	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		130	#else
		131	#define ECB_CLANG_EXTENSION(x) 0
		132	#endif
		133
87	#define ECB_CPP (__cplusplus+0)	134	#define ECB_CPP (__cplusplus+0)
88	#define ECB_CPP98 (__cplusplus >= 199711L)
89	#define ECB_CPP11 (__cplusplus >= 201103L)	135	#define ECB_CPP11 (__cplusplus >= 201103L)
		136	#define ECB_CPP14 (__cplusplus >= 201402L)
		137	#define ECB_CPP17 (__cplusplus >= 201703L)
		138
		139	#if ECB_CPP
		140	#define ECB_C 0
		141	#define ECB_STDC_VERSION 0
		142	#else
		143	#define ECB_C 1
		144	#define ECB_STDC_VERSION __STDC_VERSION__
		145	#endif
		146
		147	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		148	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		149	#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
		150
		151	#if ECB_CPP
		152	#define ECB_EXTERN_C extern "C"
		153	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		154	#define ECB_EXTERN_C_END }
		155	#else
		156	#define ECB_EXTERN_C extern
		157	#define ECB_EXTERN_C_BEG
		158	#define ECB_EXTERN_C_END
		159	#endif
90		160
91	/*****************************************************************************/	161	/*****************************************************************************/
92		162
93	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */	163	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
94	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */	164	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
95		165
96	#if ECB_NO_THREADS	166	#if ECB_NO_THREADS
97	# define ECB_NO_SMP 1	167	#define ECB_NO_SMP 1
98	#endif	168	#endif
99		169
100	#if ECB_NO_THREADS \|\| ECB_NO_SMP	170	#if ECB_NO_SMP
101	#define ECB_MEMORY_FENCE do { } while (0)	171	#define ECB_MEMORY_FENCE do { } while (0)
102	#endif	172	#endif
103		173
104	#ifndef ECB_MEMORY_FENCE	174	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
105	#if ECB_C11 && !defined __STDC_NO_ATOMICS__	175	#if __xlC__ && ECB_CPP
106	/* we assume that these memory fences work on all variables/all memory accesses, */	176	#include <builtins.h>
107	/* not just C11 atomics and atomic accesses */
108	#include <stdatomic.h>
109	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_acq_rel)
110	#define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
111	#define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
112	#endif	177	#endif
		178
		179	#if 1400 <= _MSC_VER
		180	#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
113	#endif	181	#endif
114		182
115	#ifndef ECB_MEMORY_FENCE	183	#ifndef ECB_MEMORY_FENCE
116	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	184	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
		185	#define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
117	#if __i386 \|\| __i386__	186	#if __i386 \|\| __i386__
118	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	187	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
119	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */	188	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
120	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */	189	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
121	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	190	#elif ECB_GCC_AMD64
122	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	191	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
123	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")	192	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
124	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */	193	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
125	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	194	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
126	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	195	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		196	#elif defined __ARM_ARCH_2__ \
		197	\|\| defined __ARM_ARCH_3__ \|\| defined __ARM_ARCH_3M__ \
		198	\|\| defined __ARM_ARCH_4__ \|\| defined __ARM_ARCH_4T__ \
		199	\|\| defined __ARM_ARCH_5__ \|\| defined __ARM_ARCH_5E__ \
		200	\|\| defined __ARM_ARCH_5T__ \|\| defined __ARM_ARCH_5TE__ \
		201	\|\| defined __ARM_ARCH_5TEJ__
		202	/* should not need any, unless running old code on newer cpu - arm doesn't support that */
127	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \	203	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
128	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	204	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__ \
		205	\|\| defined __ARM_ARCH_6T2__
129	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")	206	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
130	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \	207	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
131	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	208	\|\| defined __ARM_ARCH_7R__ \|\| defined __ARM_ARCH_7M__
132	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	209	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
133	#elif __sparc \|\| __sparc__	210	#elif __aarch64__
		211	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		212	#elif (__sparc \|\| __sparc__) && !(__sparc_v8__ \|\| defined __sparcv8)
134	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad \| " : : : "memory")	213	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
135	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	214	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
136	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	215	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
137	#elif defined __s390__ \|\| defined __s390x__	216	#elif defined __s390__ \|\| defined __s390x__
138	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	217	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
139	#elif defined __mips__	218	#elif defined __mips__
		219	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		220	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
140	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	221	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
141	#elif defined __alpha__	222	#elif defined __alpha__
142	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	223	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		224	#elif defined __hppa__
		225	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		226	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		227	#elif defined __ia64__
		228	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		229	#elif defined __m68k__
		230	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		231	#elif defined __m88k__
		232	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		233	#elif defined __sh__
		234	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
143	#endif	235	#endif
144	#endif	236	#endif
145	#endif	237	#endif
146		238
147	#ifndef ECB_MEMORY_FENCE	239	#ifndef ECB_MEMORY_FENCE
		240	#if ECB_GCC_VERSION(4,7)
		241	/* see comment below (stdatomic.h) about the C11 memory model. */
		242	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		243	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		244	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		245	#define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
		246
		247	#elif ECB_CLANG_EXTENSION(c_atomic)
		248	/* see comment below (stdatomic.h) about the C11 memory model. */
		249	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		250	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		251	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		252	#define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
		253
148	#if ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	254	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
149	#define ECB_MEMORY_FENCE __sync_synchronize ()	255	#define ECB_MEMORY_FENCE __sync_synchronize ()
150	/#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) /	256	#elif _MSC_VER >= 1500 /* VC++ 2008 */
151	/#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) /	257	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		258	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		259	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		260	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		261	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
152	#elif _MSC_VER >= 1400 /* VC++ 2005 */	262	#elif _MSC_VER >= 1400 /* VC++ 2005 */
153	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	263	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
154	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	264	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
155	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	265	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
156	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	266	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
157	#elif defined _WIN32	267	#elif defined _WIN32
158	#include <WinNT.h>	268	#include <WinNT.h>
159	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */	269	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
160	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	270	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
161	#include <mbarrier.h>	271	#include <mbarrier.h>
162	#define ECB_MEMORY_FENCE __machine_rw_barrier ()	272	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
163	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()	273	#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
164	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()	274	#define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
		275	#define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
165	#elif __xlC__	276	#elif __xlC__
166	#define ECB_MEMORY_FENCE __sync ()	277	#define ECB_MEMORY_FENCE __sync ()
		278	#endif
		279	#endif
		280
		281	#ifndef ECB_MEMORY_FENCE
		282	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		283	/* we assume that these memory fences work on all variables/all memory accesses, */
		284	/* not just C11 atomics and atomic accesses */
		285	#include <stdatomic.h>
		286	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		287	#define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
		288	#define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
167	#endif	289	#endif
168	#endif	290	#endif
169		291
170	#ifndef ECB_MEMORY_FENCE	292	#ifndef ECB_MEMORY_FENCE
171	#if !ECB_AVOID_PTHREADS	293	#if !ECB_AVOID_PTHREADS
…		…
191		313
192	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE	314	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
193	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	315	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
194	#endif	316	#endif
195		317
		318	#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
		319	#define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
		320	#endif
		321
196	/*****************************************************************************/	322	/*****************************************************************************/
197		323
198	#if __cplusplus	324	#if ECB_CPP
199	#define ecb_inline static inline	325	#define ecb_inline static inline
200	#elif ECB_GCC_VERSION(2,5)	326	#elif ECB_GCC_VERSION(2,5)
201	#define ecb_inline static __inline__	327	#define ecb_inline static __inline__
202	#elif ECB_C99	328	#elif ECB_C99
203	#define ecb_inline static inline	329	#define ecb_inline static inline
…		…
217		343
218	#define ECB_CONCAT_(a, b) a ## b	344	#define ECB_CONCAT_(a, b) a ## b
219	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	345	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
220	#define ECB_STRINGIFY_(a) # a	346	#define ECB_STRINGIFY_(a) # a
221	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	347	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		348	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
222		349
223	#define ecb_function_ ecb_inline	350	#define ecb_function_ ecb_inline
224		351
225	#if ECB_GCC_VERSION(3,1)	352	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
226	#define ecb_attribute(attrlist) __attribute__(attrlist)	353	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		354	#else
		355	#define ecb_attribute(attrlist)
		356	#endif
		357
		358	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_constant_p)
227	#define ecb_is_constant(expr) __builtin_constant_p (expr)	359	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		360	#else
		361	/* possible C11 impl for integral types
		362	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		363	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		364
		365	#define ecb_is_constant(expr) 0
		366	#endif
		367
		368	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_expect)
228	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	369	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		370	#else
		371	#define ecb_expect(expr,value) (expr)
		372	#endif
		373
		374	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_prefetch)
229	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	375	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
230	#else	376	#else
231	#define ecb_attribute(attrlist)
232	#define ecb_is_constant(expr) 0
233	#define ecb_expect(expr,value) (expr)
234	#define ecb_prefetch(addr,rw,locality)	377	#define ecb_prefetch(addr,rw,locality)
235	#endif	378	#endif
236		379
237	/* no emulation for ecb_decltype */	380	/* no emulation for ecb_decltype */
238	#if ECB_GCC_VERSION(4,5)	381	#if ECB_CPP11
		382	// older implementations might have problems with decltype(x)::type, work around it
		383	template<class T> struct ecb_decltype_t { typedef T type; };
239	#define ecb_decltype(x) __decltype(x)	384	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
240	#elif ECB_GCC_VERSION(3,0)	385	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
241	#define ecb_decltype(x) __typeof(x)	386	#define ecb_decltype(x) __typeof__ (x)
242	#endif	387	#endif
243		388
		389	#if _MSC_VER >= 1300
		390	#define ecb_deprecated __declspec (deprecated)
		391	#else
		392	#define ecb_deprecated ecb_attribute ((__deprecated__))
		393	#endif
		394
		395	#if _MSC_VER >= 1500
		396	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		397	#elif ECB_GCC_VERSION(4,5)
		398	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		399	#else
		400	#define ecb_deprecated_message(msg) ecb_deprecated
		401	#endif
		402
		403	#if _MSC_VER >= 1400
		404	#define ecb_noinline __declspec (noinline)
		405	#else
244	#define ecb_noinline ecb_attribute ((__noinline__))	406	#define ecb_noinline ecb_attribute ((__noinline__))
		407	#endif
		408
245	#define ecb_unused ecb_attribute ((__unused__))	409	#define ecb_unused ecb_attribute ((__unused__))
246	#define ecb_const ecb_attribute ((__const__))	410	#define ecb_const ecb_attribute ((__const__))
247	#define ecb_pure ecb_attribute ((__pure__))	411	#define ecb_pure ecb_attribute ((__pure__))
248		412
249	#if ECB_C11	413	#if ECB_C11 \|\| __IBMC_NORETURN
		414	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
250	#define ecb_noreturn _Noreturn	415	#define ecb_noreturn _Noreturn
		416	#elif ECB_CPP11
		417	#define ecb_noreturn [[noreturn]]
		418	#elif _MSC_VER >= 1200
		419	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		420	#define ecb_noreturn __declspec (noreturn)
251	#else	421	#else
252	#define ecb_noreturn ecb_attribute ((__noreturn__))	422	#define ecb_noreturn ecb_attribute ((__noreturn__))
253	#endif	423	#endif
254		424
255	#if ECB_GCC_VERSION(4,3)	425	#if ECB_GCC_VERSION(4,3)
…		…
270	/* for compatibility to the rest of the world */	440	/* for compatibility to the rest of the world */
271	#define ecb_likely(expr) ecb_expect_true (expr)	441	#define ecb_likely(expr) ecb_expect_true (expr)
272	#define ecb_unlikely(expr) ecb_expect_false (expr)	442	#define ecb_unlikely(expr) ecb_expect_false (expr)
273		443
274	/* count trailing zero bits and count # of one bits */	444	/* count trailing zero bits and count # of one bits */
275	#if ECB_GCC_VERSION(3,4)	445	#if ECB_GCC_VERSION(3,4) \
		446	\|\| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		447	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		448	&& ECB_CLANG_BUILTIN(__builtin_popcount))
276	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */	449	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
277	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	450	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
278	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	451	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
279	#define ecb_ctz32(x) __builtin_ctz (x)	452	#define ecb_ctz32(x) __builtin_ctz (x)
280	#define ecb_ctz64(x) __builtin_ctzll (x)	453	#define ecb_ctz64(x) __builtin_ctzll (x)
281	#define ecb_popcount32(x) __builtin_popcount (x)	454	#define ecb_popcount32(x) __builtin_popcount (x)
282	/* no popcountll */	455	/* no popcountll */
283	#else	456	#else
284	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	457	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
285	ecb_function_ int	458	ecb_function_ ecb_const int
286	ecb_ctz32 (uint32_t x)	459	ecb_ctz32 (uint32_t x)
287	{	460	{
		461	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		462	unsigned long r;
		463	_BitScanForward (&r, x);
		464	return (int)r;
		465	#else
288	int r = 0;	466	int r = 0;
289		467
290	x &= ~x + 1; /* this isolates the lowest bit */	468	x &= ~x + 1; /* this isolates the lowest bit */
291		469
292	#if ECB_branchless_on_i386	470	#if ECB_branchless_on_i386
…		…
302	if (x & 0xff00ff00) r += 8;	480	if (x & 0xff00ff00) r += 8;
303	if (x & 0xffff0000) r += 16;	481	if (x & 0xffff0000) r += 16;
304	#endif	482	#endif
305		483
306	return r;	484	return r;
		485	#endif
307	}	486	}
308		487
309	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	488	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
310	ecb_function_ int	489	ecb_function_ ecb_const int
311	ecb_ctz64 (uint64_t x)	490	ecb_ctz64 (uint64_t x)
312	{	491	{
		492	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		493	unsigned long r;
		494	_BitScanForward64 (&r, x);
		495	return (int)r;
		496	#else
313	int shift = x & 0xffffffffU ? 0 : 32;	497	int shift = x & 0xffffffff ? 0 : 32;
314	return ecb_ctz32 (x >> shift) + shift;	498	return ecb_ctz32 (x >> shift) + shift;
		499	#endif
315	}	500	}
316		501
317	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	502	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
318	ecb_function_ int	503	ecb_function_ ecb_const int
319	ecb_popcount32 (uint32_t x)	504	ecb_popcount32 (uint32_t x)
320	{	505	{
321	x -= (x >> 1) & 0x55555555;	506	x -= (x >> 1) & 0x55555555;
322	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	507	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
323	x = ((x >> 4) + x) & 0x0f0f0f0f;	508	x = ((x >> 4) + x) & 0x0f0f0f0f;
324	x *= 0x01010101;	509	x *= 0x01010101;
325		510
326	return x >> 24;	511	return x >> 24;
327	}	512	}
328		513
329	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	514	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
330	ecb_function_ int ecb_ld32 (uint32_t x)	515	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
331	{	516	{
		517	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		518	unsigned long r;
		519	_BitScanReverse (&r, x);
		520	return (int)r;
		521	#else
332	int r = 0;	522	int r = 0;
333		523
334	if (x >> 16) { x >>= 16; r += 16; }	524	if (x >> 16) { x >>= 16; r += 16; }
335	if (x >> 8) { x >>= 8; r += 8; }	525	if (x >> 8) { x >>= 8; r += 8; }
336	if (x >> 4) { x >>= 4; r += 4; }	526	if (x >> 4) { x >>= 4; r += 4; }
337	if (x >> 2) { x >>= 2; r += 2; }	527	if (x >> 2) { x >>= 2; r += 2; }
338	if (x >> 1) { r += 1; }	528	if (x >> 1) { r += 1; }
339		529
340	return r;	530	return r;
		531	#endif
341	}	532	}
342		533
343	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	534	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
344	ecb_function_ int ecb_ld64 (uint64_t x)	535	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
345	{	536	{
		537	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		538	unsigned long r;
		539	_BitScanReverse64 (&r, x);
		540	return (int)r;
		541	#else
346	int r = 0;	542	int r = 0;
347		543
348	if (x >> 32) { x >>= 32; r += 32; }	544	if (x >> 32) { x >>= 32; r += 32; }
349		545
350	return r + ecb_ld32 (x);	546	return r + ecb_ld32 (x);
351	}
352	#endif	547	#endif
		548	}
		549	#endif
353		550
354	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;	551	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
355	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }	552	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
356	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;	553	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
357	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }	554	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
358		555
359	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	556	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
360	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	557	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
361	{	558	{
362	return ( (x * 0x0802U & 0x22110U)	559	return ( (x * 0x0802U & 0x22110U)
363	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	560	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
364	}	561	}
365		562
366	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	563	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
367	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	564	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
368	{	565	{
369	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	566	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
370	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	567	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
371	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	568	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
372	x = ( x >> 8 ) \| ( x << 8);	569	x = ( x >> 8 ) \| ( x << 8);
373		570
374	return x;	571	return x;
375	}	572	}
376		573
377	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	574	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
378	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	575	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
379	{	576	{
380	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	577	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
381	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	578	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
382	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	579	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
383	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	580	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
386	return x;	583	return x;
387	}	584	}
388		585
389	/* popcount64 is only available on 64 bit cpus as gcc builtin */	586	/* popcount64 is only available on 64 bit cpus as gcc builtin */
390	/* so for this version we are lazy */	587	/* so for this version we are lazy */
391	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	588	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
392	ecb_function_ int	589	ecb_function_ ecb_const int
393	ecb_popcount64 (uint64_t x)	590	ecb_popcount64 (uint64_t x)
394	{	591	{
395	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	592	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
396	}	593	}
397		594
398	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;	595	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
399	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;	596	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
400	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;	597	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
401	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;	598	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
402	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;	599	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
403	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;	600	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
404	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;	601	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
405	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;	602	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
406		603
407	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }	604	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
408	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }	605	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
409	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }	606	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
410	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }	607	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
411	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }	608	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
412	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }	609	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
413	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }	610	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
414	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }	611	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
415		612
416	#if ECB_GCC_VERSION(4,3)	613	#if ECB_GCC_VERSION(4,3) \|\| (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		614	#if ECB_GCC_VERSION(4,8) \|\| ECB_CLANG_BUILTIN(__builtin_bswap16)
		615	#define ecb_bswap16(x) __builtin_bswap16 (x)
		616	#else
417	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	617	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		618	#endif
418	#define ecb_bswap32(x) __builtin_bswap32 (x)	619	#define ecb_bswap32(x) __builtin_bswap32 (x)
419	#define ecb_bswap64(x) __builtin_bswap64 (x)	620	#define ecb_bswap64(x) __builtin_bswap64 (x)
		621	#elif _MSC_VER
		622	#include <stdlib.h>
		623	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		624	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		625	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
420	#else	626	#else
421	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	627	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
422	ecb_function_ uint16_t	628	ecb_function_ ecb_const uint16_t
423	ecb_bswap16 (uint16_t x)	629	ecb_bswap16 (uint16_t x)
424	{	630	{
425	return ecb_rotl16 (x, 8);	631	return ecb_rotl16 (x, 8);
426	}	632	}
427		633
428	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	634	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
429	ecb_function_ uint32_t	635	ecb_function_ ecb_const uint32_t
430	ecb_bswap32 (uint32_t x)	636	ecb_bswap32 (uint32_t x)
431	{	637	{
432	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	638	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
433	}	639	}
434		640
435	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	641	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
436	ecb_function_ uint64_t	642	ecb_function_ ecb_const uint64_t
437	ecb_bswap64 (uint64_t x)	643	ecb_bswap64 (uint64_t x)
438	{	644	{
439	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	645	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
440	}	646	}
441	#endif	647	#endif
442		648
443	#if ECB_GCC_VERSION(4,5)	649	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
444	#define ecb_unreachable() __builtin_unreachable ()	650	#define ecb_unreachable() __builtin_unreachable ()
445	#else	651	#else
446	/* this seems to work fine, but gcc always emits a warning for it :/ */	652	/* this seems to work fine, but gcc always emits a warning for it :/ */
447	ecb_inline void ecb_unreachable (void) ecb_noreturn;	653	ecb_inline ecb_noreturn void ecb_unreachable (void);
448	ecb_inline void ecb_unreachable (void) { }	654	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
449	#endif	655	#endif
450		656
451	/* try to tell the compiler that some condition is definitely true */	657	/* try to tell the compiler that some condition is definitely true */
452	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)	658	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
453		659
454	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	660	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
455	ecb_inline unsigned char	661	ecb_inline ecb_const uint32_t
456	ecb_byteorder_helper (void)	662	ecb_byteorder_helper (void)
457	{	663	{
458	const uint32_t u = 0x11223344;	664	/* the union code still generates code under pressure in gcc, */
459	return (unsigned char )&u;	665	/* but less than using pointers, and always seems to */
		666	/* successfully return a constant. */
		667	/* the reason why we have this horrible preprocessor mess */
		668	/* is to avoid it in all cases, at least on common architectures */
		669	/* or when using a recent enough gcc version (>= 4.6) */
		670	#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
		671	\|\| ((__i386 \|\| __i386__ \|\| _M_IX86 \|\| ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64) && !__VOS__)
		672	#define ECB_LITTLE_ENDIAN 1
		673	return 0x44332211;
		674	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		675	\|\| ((__AARCH64EB__ \|\| __MIPSEB__ \|\| __ARMEB__) && !__VOS__)
		676	#define ECB_BIG_ENDIAN 1
		677	return 0x11223344;
		678	#else
		679	union
		680	{
		681	uint8_t c[4];
		682	uint32_t u;
		683	} u = { 0x11, 0x22, 0x33, 0x44 };
		684	return u.u;
		685	#endif
460	}	686	}
461		687
462	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	688	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
463	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	689	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
464	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	690	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
465	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	691	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
		692
		693	/*****************************************************************************/
		694	/* unaligned load/store */
		695
		696	ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
		697	ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
		698	ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
		699
		700	ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
		701	ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
		702	ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
		703
		704	ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		705	ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		706	ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		707
		708	ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
		709	ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
		710	ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
		711
		712	ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
		713	ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
		714	ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
		715
		716	ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
		717	ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
		718	ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
		719
		720	ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
		721	ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
		722	ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
		723
		724	ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
		725	ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
		726	ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
		727
		728	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)); }
		729	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)); }
		730	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)); }
		731
		732	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)); }
		733	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)); }
		734	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)); }
		735
		736	#ifdef ECB_CPP
		737
		738	inline uint8_t ecb_bswap (uint8_t v) { return v; }
		739	inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
		740	inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
		741	inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
		742
		743	template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
		744	template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
		745	template<typename T> inline T ecb_peek (const void ptr) { return (const T *)ptr; }
		746	template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
		747	template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
		748	template<typename T> inline T ecb_peek_u (const void *ptr) { T v; std::memcpy (&v, ptr, sizeof (v)); return v; }
		749	template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
		750	template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
		751
		752	template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
		753	template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
		754	template<typename T> inline void ecb_poke (void ptr, T v) { (T *)ptr = v; }
		755	template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
		756	template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
		757	template<typename T> inline void ecb_poke_u (void *ptr, T v) { std::memcpy (ptr, &v, sizeof (v)); }
		758	template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
		759	template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
		760
		761	#endif
		762
		763	/*****************************************************************************/
466		764
467	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	765	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
468	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	766	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
469	#else	767	#else
470	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	768	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
471	#endif	769	#endif
472		770
473	#if __cplusplus	771	#if ECB_CPP
474	template<typename T>	772	template<typename T>
475	static inline T ecb_div_rd (T val, T div)	773	static inline T ecb_div_rd (T val, T div)
476	{	774	{
477	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	775	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
478	}	776	}
…		…
495	}	793	}
496	#else	794	#else
497	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	795	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
498	#endif	796	#endif
499		797
		798	/*****************************************************************************/
		799
		800	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		801	ecb_function_ ecb_const uint32_t
		802	ecb_binary16_to_binary32 (uint32_t x)
		803	{
		804	unsigned int s = (x & 0x8000) << (31 - 15);
		805	int e = (x >> 10) & 0x001f;
		806	unsigned int m = x & 0x03ff;
		807
		808	if (ecb_expect_false (e == 31))
		809	/* infinity or NaN */
		810	e = 255 - (127 - 15);
		811	else if (ecb_expect_false (!e))
		812	{
		813	if (ecb_expect_true (!m))
		814	/* zero, handled by code below by forcing e to 0 */
		815	e = 0 - (127 - 15);
		816	else
		817	{
		818	/* subnormal, renormalise */
		819	unsigned int s = 10 - ecb_ld32 (m);
		820
		821	m = (m << s) & 0x3ff; /* mask implicit bit */
		822	e -= s - 1;
		823	}
		824	}
		825
		826	/* e and m now are normalised, or zero, (or inf or nan) */
		827	e += 127 - 15;
		828
		829	return s \| (e << 23) \| (m << (23 - 10));
		830	}
		831
		832	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		833	ecb_function_ ecb_const uint16_t
		834	ecb_binary32_to_binary16 (uint32_t x)
		835	{
		836	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		837	unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		838	unsigned int m = x & 0x007fffff;
		839
		840	x &= 0x7fffffff;
		841
		842	/* if it's within range of binary16 normals, use fast path */
		843	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		844	{
		845	/* mantissa round-to-even */
		846	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		847
		848	/* handle overflow */
		849	if (ecb_expect_false (m >= 0x00800000))
		850	{
		851	m >>= 1;
		852	e += 1;
		853	}
		854
		855	return s \| (e << 10) \| (m >> (23 - 10));
		856	}
		857
		858	/* handle large numbers and infinity */
		859	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		860	return s \| 0x7c00;
		861
		862	/* handle zero, subnormals and small numbers */
		863	if (ecb_expect_true (x < 0x38800000))
		864	{
		865	/* zero */
		866	if (ecb_expect_true (!x))
		867	return s;
		868
		869	/* handle subnormals */
		870
		871	/* too small, will be zero */
		872	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		873	return s;
		874
		875	m \|= 0x00800000; /* make implicit bit explicit */
		876
		877	/* very tricky - we need to round to the nearest e (+10) bit value */
		878	{
		879	unsigned int bits = 14 - e;
		880	unsigned int half = (1 << (bits - 1)) - 1;
		881	unsigned int even = (m >> bits) & 1;
		882
		883	/* if this overflows, we will end up with a normalised number */
		884	m = (m + half + even) >> bits;
		885	}
		886
		887	return s \| m;
		888	}
		889
		890	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		891	m >>= 13;
		892
		893	return s \| 0x7c00 \| m \| !m;
		894	}
		895
		896	/*******************************************************************************/
		897	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		898
		899	/* basically, everything uses "ieee pure-endian" floating point numbers */
		900	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		901	#if 0 \
		902	\|\| __i386 \|\| __i386__ \
		903	\|\| ECB_GCC_AMD64 \
		904	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
		905	\|\| defined __s390__ \|\| defined __s390x__ \
		906	\|\| defined __mips__ \
		907	\|\| defined __alpha__ \
		908	\|\| defined __hppa__ \
		909	\|\| defined __ia64__ \
		910	\|\| defined __m68k__ \
		911	\|\| defined __m88k__ \
		912	\|\| defined __sh__ \
		913	\|\| defined _M_IX86 \|\| defined ECB_MSVC_AMD64 \|\| defined _M_IA64 \
		914	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__)) \
		915	\|\| defined __aarch64__
		916	#define ECB_STDFP 1
		917	#include <string.h> /* for memcpy */
		918	#else
		919	#define ECB_STDFP 0
		920	#endif
		921
		922	#ifndef ECB_NO_LIBM
		923
		924	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		925
		926	/* only the oldest of old doesn't have this one. solaris. */
		927	#ifdef INFINITY
		928	#define ECB_INFINITY INFINITY
		929	#else
		930	#define ECB_INFINITY HUGE_VAL
500	#endif	931	#endif
501		932
		933	#ifdef NAN
		934	#define ECB_NAN NAN
		935	#else
		936	#define ECB_NAN ECB_INFINITY
		937	#endif
		938
		939	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
		940	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		941	#define ecb_frexpf(x,e) frexpf ((x), (e))
		942	#else
		943	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		944	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		945	#endif
		946
		947	/* convert a float to ieee single/binary32 */
		948	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
		949	ecb_function_ ecb_const uint32_t
		950	ecb_float_to_binary32 (float x)
		951	{
		952	uint32_t r;
		953
		954	#if ECB_STDFP
		955	memcpy (&r, &x, 4);
		956	#else
		957	/* slow emulation, works for anything but -0 */
		958	uint32_t m;
		959	int e;
		960
		961	if (x == 0e0f ) return 0x00000000U;
		962	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		963	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		964	if (x != x ) return 0x7fbfffffU;
		965
		966	m = ecb_frexpf (x, &e) * 0x1000000U;
		967
		968	r = m & 0x80000000U;
		969
		970	if (r)
		971	m = -m;
		972
		973	if (e <= -126)
		974	{
		975	m &= 0xffffffU;
		976	m >>= (-125 - e);
		977	e = -126;
		978	}
		979
		980	r \|= (e + 126) << 23;
		981	r \|= m & 0x7fffffU;
		982	#endif
		983
		984	return r;
		985	}
		986
		987	/* converts an ieee single/binary32 to a float */
		988	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
		989	ecb_function_ ecb_const float
		990	ecb_binary32_to_float (uint32_t x)
		991	{
		992	float r;
		993
		994	#if ECB_STDFP
		995	memcpy (&r, &x, 4);
		996	#else
		997	/* emulation, only works for normals and subnormals and +0 */
		998	int neg = x >> 31;
		999	int e = (x >> 23) & 0xffU;
		1000
		1001	x &= 0x7fffffU;
		1002
		1003	if (e)
		1004	x \|= 0x800000U;
		1005	else
		1006	e = 1;
		1007
		1008	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
		1009	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
		1010
		1011	r = neg ? -r : r;
		1012	#endif
		1013
		1014	return r;
		1015	}
		1016
		1017	/* convert a double to ieee double/binary64 */
		1018	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
		1019	ecb_function_ ecb_const uint64_t
		1020	ecb_double_to_binary64 (double x)
		1021	{
		1022	uint64_t r;
		1023
		1024	#if ECB_STDFP
		1025	memcpy (&r, &x, 8);
		1026	#else
		1027	/* slow emulation, works for anything but -0 */
		1028	uint64_t m;
		1029	int e;
		1030
		1031	if (x == 0e0 ) return 0x0000000000000000U;
		1032	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1033	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1034	if (x != x ) return 0X7ff7ffffffffffffU;
		1035
		1036	m = frexp (x, &e) * 0x20000000000000U;
		1037
		1038	r = m & 0x8000000000000000;;
		1039
		1040	if (r)
		1041	m = -m;
		1042
		1043	if (e <= -1022)
		1044	{
		1045	m &= 0x1fffffffffffffU;
		1046	m >>= (-1021 - e);
		1047	e = -1022;
		1048	}
		1049
		1050	r \|= ((uint64_t)(e + 1022)) << 52;
		1051	r \|= m & 0xfffffffffffffU;
		1052	#endif
		1053
		1054	return r;
		1055	}
		1056
		1057	/* converts an ieee double/binary64 to a double */
		1058	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
		1059	ecb_function_ ecb_const double
		1060	ecb_binary64_to_double (uint64_t x)
		1061	{
		1062	double r;
		1063
		1064	#if ECB_STDFP
		1065	memcpy (&r, &x, 8);
		1066	#else
		1067	/* emulation, only works for normals and subnormals and +0 */
		1068	int neg = x >> 63;
		1069	int e = (x >> 52) & 0x7ffU;
		1070
		1071	x &= 0xfffffffffffffU;
		1072
		1073	if (e)
		1074	x \|= 0x10000000000000U;
		1075	else
		1076	e = 1;
		1077
		1078	/* we distrust ldexp a bit and do the 2*-53 scaling by an extra multiply /
		1079	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1080
		1081	r = neg ? -r : r;
		1082	#endif
		1083
		1084	return r;
		1085	}
		1086
		1087	/* convert a float to ieee half/binary16 */
		1088	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1089	ecb_function_ ecb_const uint16_t
		1090	ecb_float_to_binary16 (float x)
		1091	{
		1092	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1093	}
		1094
		1095	/* convert an ieee half/binary16 to float */
		1096	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1097	ecb_function_ ecb_const float
		1098	ecb_binary16_to_float (uint16_t x)
		1099	{
		1100	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1101	}
		1102
		1103	#endif
		1104
		1105	#endif
		1106

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Comparing libecb/ecb.h (file contents): Revision 1.91 by root, Tue May 29 14:30:44 2012 UTC vs. Revision 1.181 by root, Mon Jan 20 13:16:01 2020 UTC

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Comparing libecb/ecb.h (file contents):
Revision 1.91 by root, Tue May 29 14:30:44 2012 UTC vs.
Revision 1.181 by root, Mon Jan 20 13:16:01 2020 UTC