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

Comparing libecb/ecb.h (file contents):
Revision 1.124 by root, Tue Dec 3 15:35:14 2013 UTC vs.
Revision 1.189 by root, Mon Jun 21 21:26:48 2021 UTC

…		…
1	/*	1	/*
2	* libecb - http://software.schmorp.de/pkg/libecb	2	* libecb - http://software.schmorp.de/pkg/libecb
3	*	3	*
4	* Copyright (©) 2009-2013 Marc Alexander Lehmann <libecb@schmorp.de>	4	* Copyright (©) 2009-2015,2018-2021 Marc Alexander Lehmann <libecb@schmorp.de>
5	* Copyright (©) 2011 Emanuele Giaquinta	5	* Copyright (©) 2011 Emanuele Giaquinta
6	* All rights reserved.	6	* All rights reserved.
7	*	7	*
8	* Redistribution and use in source and binary forms, with or without modifica-	8	* Redistribution and use in source and binary forms, with or without modifica-
9	* tion, are permitted provided that the following conditions are met:	9	* tion, are permitted provided that the following conditions are met:
23	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;	23	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,	24	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-	25	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
26	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED	26	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
27	* OF THE POSSIBILITY OF SUCH DAMAGE.	27	* OF THE POSSIBILITY OF SUCH DAMAGE.
		28	*
		29	* Alternatively, the contents of this file may be used under the terms of
		30	* the GNU General Public License ("GPL") version 2 or any later version,
		31	* in which case the provisions of the GPL are applicable instead of
		32	* the above. If you wish to allow the use of your version of this file
		33	* only under the terms of the GPL and not to allow others to use your
		34	* version of this file under the BSD license, indicate your decision
		35	* by deleting the provisions above and replace them with the notice
		36	* and other provisions required by the GPL. If you do not delete the
		37	* provisions above, a recipient may use your version of this file under
		38	* either the BSD or the GPL.
28	*/	39	*/
29		40
30	#ifndef ECB_H	41	#ifndef ECB_H
31	#define ECB_H	42	#define ECB_H
32		43
33	/* 16 bits major, 16 bits minor */	44	/* 16 bits major, 16 bits minor */
34	#define ECB_VERSION 0x00010003	45	#define ECB_VERSION 0x00010009
35		46
36	#ifdef _WIN32	47	#include <string.h> /* for memcpy */
		48
		49	#if defined (_WIN32) && !defined (__MINGW32__)
37	typedef signed char int8_t;	50	typedef signed char int8_t;
38	typedef unsigned char uint8_t;	51	typedef unsigned char uint8_t;
		52	typedef signed char int_fast8_t;
		53	typedef unsigned char uint_fast8_t;
39	typedef signed short int16_t;	54	typedef signed short int16_t;
40	typedef unsigned short uint16_t;	55	typedef unsigned short uint16_t;
		56	typedef signed int int_fast16_t;
		57	typedef unsigned int uint_fast16_t;
41	typedef signed int int32_t;	58	typedef signed int int32_t;
42	typedef unsigned int uint32_t;	59	typedef unsigned int uint32_t;
		60	typedef signed int int_fast32_t;
		61	typedef unsigned int uint_fast32_t;
43	#if __GNUC__	62	#if __GNUC__
44	typedef signed long long int64_t;	63	typedef signed long long int64_t;
45	typedef unsigned long long uint64_t;	64	typedef unsigned long long uint64_t;
46	#else /* _MSC_VER \|\| __BORLANDC__ */	65	#else /* _MSC_VER \|\| __BORLANDC__ */
47	typedef signed __int64 int64_t;	66	typedef signed __int64 int64_t;
48	typedef unsigned __int64 uint64_t;	67	typedef unsigned __int64 uint64_t;
49	#endif	68	#endif
		69	typedef int64_t int_fast64_t;
		70	typedef uint64_t uint_fast64_t;
50	#ifdef _WIN64	71	#ifdef _WIN64
51	#define ECB_PTRSIZE 8	72	#define ECB_PTRSIZE 8
52	typedef uint64_t uintptr_t;	73	typedef uint64_t uintptr_t;
53	typedef int64_t intptr_t;	74	typedef int64_t intptr_t;
54	#else	75	#else
…		…
56	typedef uint32_t uintptr_t;	77	typedef uint32_t uintptr_t;
57	typedef int32_t intptr_t;	78	typedef int32_t intptr_t;
58	#endif	79	#endif
59	#else	80	#else
60	#include <inttypes.h>	81	#include <inttypes.h>
61	#if UINTMAX_MAX > 0xffffffffU	82	#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
62	#define ECB_PTRSIZE 8	83	#define ECB_PTRSIZE 8
63	#else	84	#else
64	#define ECB_PTRSIZE 4	85	#define ECB_PTRSIZE 4
65	#endif	86	#endif
66	#endif	87	#endif
67		88
		89	#define ECB_GCC_AMD64 (__amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__)
		90	#define ECB_MSVC_AMD64 (_M_AMD64 \|\| _M_X64)
		91
		92	#ifndef ECB_OPTIMIZE_SIZE
		93	#if __OPTIMIZE_SIZE__
		94	#define ECB_OPTIMIZE_SIZE 1
		95	#else
		96	#define ECB_OPTIMIZE_SIZE 0
		97	#endif
		98	#endif
		99
68	/* work around x32 idiocy by defining proper macros */	100	/* work around x32 idiocy by defining proper macros */
69	#if __x86_64 \|\| _M_AMD64	101	#if ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64
70	#if _ILP32	102	#if _ILP32
71	#define ECB_AMD64_X32 1	103	#define ECB_AMD64_X32 1
72	#else	104	#else
73	#define ECB_AMD64 1	105	#define ECB_AMD64 1
74	#endif	106	#endif
		107	#endif
		108
		109	#if ECB_PTRSIZE >= 8 \|\| ECB_AMD64_X32
		110	#define ECB_64BIT_NATIVE 1
		111	#else
		112	#define ECB_64BIT_NATIVE 0
75	#endif	113	#endif
76		114
77	/* many compilers define _GNUC_ to some versions but then only implement	115	/* many compilers define _GNUC_ to some versions but then only implement
78	* what their idiot authors think are the "more important" extensions,	116	* what their idiot authors think are the "more important" extensions,
79	* causing enormous grief in return for some better fake benchmark numbers.	117	* causing enormous grief in return for some better fake benchmark numbers.
80	* or so.	118	* or so.
81	* we try to detect these and simply assume they are not gcc - if they have	119	* we try to detect these and simply assume they are not gcc - if they have
82	* an issue with that they should have done it right in the first place.	120	* an issue with that they should have done it right in the first place.
83	*/	121	*/
84	#ifndef ECB_GCC_VERSION
85	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__	122	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__
86	#define ECB_GCC_VERSION(major,minor) 0	123	#define ECB_GCC_VERSION(major,minor) 0
87	#else	124	#else
88	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	125	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
89	#endif	126	#endif
90	#endif
91		127
92	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */	128	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
93	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	129
94	#define ECB_C11 (__STDC_VERSION__ >= 201112L)	130	#if __clang__ && defined __has_builtin
		131	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		132	#else
		133	#define ECB_CLANG_BUILTIN(x) 0
		134	#endif
		135
		136	#if __clang__ && defined __has_extension
		137	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		138	#else
		139	#define ECB_CLANG_EXTENSION(x) 0
		140	#endif
		141
95	#define ECB_CPP (__cplusplus+0)	142	#define ECB_CPP (__cplusplus+0)
96	#define ECB_CPP11 (__cplusplus >= 201103L)	143	#define ECB_CPP11 (__cplusplus >= 201103L)
		144	#define ECB_CPP14 (__cplusplus >= 201402L)
		145	#define ECB_CPP17 (__cplusplus >= 201703L)
		146
		147	#if ECB_CPP
		148	#define ECB_C 0
		149	#define ECB_STDC_VERSION 0
		150	#else
		151	#define ECB_C 1
		152	#define ECB_STDC_VERSION __STDC_VERSION__
		153	#endif
		154
		155	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		156	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		157	#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
97		158
98	#if ECB_CPP	159	#if ECB_CPP
99	#define ECB_EXTERN_C extern "C"	160	#define ECB_EXTERN_C extern "C"
100	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {	161	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
101	#define ECB_EXTERN_C_END }	162	#define ECB_EXTERN_C_END }
…		…
116		177
117	#if ECB_NO_SMP	178	#if ECB_NO_SMP
118	#define ECB_MEMORY_FENCE do { } while (0)	179	#define ECB_MEMORY_FENCE do { } while (0)
119	#endif	180	#endif
120		181
		182	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
		183	#if __xlC__ && ECB_CPP
		184	#include <builtins.h>
		185	#endif
		186
		187	#if 1400 <= _MSC_VER
		188	#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
		189	#endif
		190
121	#ifndef ECB_MEMORY_FENCE	191	#ifndef ECB_MEMORY_FENCE
122	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	192	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
		193	#define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
123	#if __i386 \|\| __i386__	194	#if __i386 \|\| __i386__
124	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	195	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
125	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	196	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
126	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	197	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
127	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	198	#elif ECB_GCC_AMD64
128	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	199	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
129	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	200	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
130	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	201	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
131	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	202	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
132	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	203	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		204	#elif defined __ARM_ARCH_2__ \
		205	\|\| defined __ARM_ARCH_3__ \|\| defined __ARM_ARCH_3M__ \
		206	\|\| defined __ARM_ARCH_4__ \|\| defined __ARM_ARCH_4T__ \
		207	\|\| defined __ARM_ARCH_5__ \|\| defined __ARM_ARCH_5E__ \
		208	\|\| defined __ARM_ARCH_5T__ \|\| defined __ARM_ARCH_5TE__ \
		209	\|\| defined __ARM_ARCH_5TEJ__
		210	/* should not need any, unless running old code on newer cpu - arm doesn't support that */
133	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \	211	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
134	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	212	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__ \
		213	\|\| defined __ARM_ARCH_6T2__
135	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")	214	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
136	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \	215	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
137	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	216	\|\| defined __ARM_ARCH_7R__ \|\| defined __ARM_ARCH_7M__
138	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	217	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		218	#elif __aarch64__
		219	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
139	#elif (__sparc \|\| __sparc__) && !__sparcv8	220	#elif (__sparc \|\| __sparc__) && !(__sparc_v8__ \|\| defined __sparcv8)
140	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")	221	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
141	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	222	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
142	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	223	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
143	#elif defined __s390__ \|\| defined __s390x__	224	#elif defined __s390__ \|\| defined __s390x__
144	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	225	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
…		…
165		246
166	#ifndef ECB_MEMORY_FENCE	247	#ifndef ECB_MEMORY_FENCE
167	#if ECB_GCC_VERSION(4,7)	248	#if ECB_GCC_VERSION(4,7)
168	/* see comment below (stdatomic.h) about the C11 memory model. */	249	/* see comment below (stdatomic.h) about the C11 memory model. */
169	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)	250	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		251	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		252	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		253	#define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
170		254
171	/* The __has_feature syntax from clang is so misdesigned that we cannot use it	255	#elif ECB_CLANG_EXTENSION(c_atomic)
172	* without risking compile time errors with other compilers. We could
173	* define our own ecb_clang_has_feature, but I just can't be bothered to work
174	* around this shit time and again.
175	* #elif defined __clang && __has_feature (cxx_atomic)
176	* // see comment below (stdatomic.h) about the C11 memory model.	256	/* see comment below (stdatomic.h) about the C11 memory model. */
177	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)	257	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
178	*/	258	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		259	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		260	#define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
179		261
180	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	262	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
181	#define ECB_MEMORY_FENCE __sync_synchronize ()	263	#define ECB_MEMORY_FENCE __sync_synchronize ()
		264	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		265	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		266	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		267	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		268	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		269	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
182	#elif _MSC_VER >= 1400 /* VC++ 2005 */	270	#elif _MSC_VER >= 1400 /* VC++ 2005 */
183	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	271	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
184	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	272	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
185	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	273	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
186	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	274	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
187	#elif defined _WIN32	275	#elif defined _WIN32
188	#include <WinNT.h>	276	#include <WinNT.h>
189	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */	277	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
190	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	278	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
191	#include <mbarrier.h>	279	#include <mbarrier.h>
192	#define ECB_MEMORY_FENCE __machine_rw_barrier ()	280	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
193	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()	281	#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
194	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()	282	#define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
		283	#define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
195	#elif __xlC__	284	#elif __xlC__
196	#define ECB_MEMORY_FENCE __sync ()	285	#define ECB_MEMORY_FENCE __sync ()
197	#endif	286	#endif
198	#endif	287	#endif
199		288
200	#ifndef ECB_MEMORY_FENCE	289	#ifndef ECB_MEMORY_FENCE
201	#if ECB_C11 && !defined __STDC_NO_ATOMICS__	290	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
202	/* we assume that these memory fences work on all variables/all memory accesses, */	291	/* we assume that these memory fences work on all variables/all memory accesses, */
203	/* not just C11 atomics and atomic accesses */	292	/* not just C11 atomics and atomic accesses */
204	#include <stdatomic.h>	293	#include <stdatomic.h>
205	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
206	/* any fence other than seq_cst, which isn't very efficient for us. */
207	/* Why that is, we don't know - either the C11 memory model is quite useless */
208	/* for most usages, or gcc and clang have a bug */
209	/* I currently lean towards the latter, and inefficiently implement */
210	/* all three of ecb's fences as a seq_cst fence */
211	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)	294	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		295	#define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
		296	#define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
212	#endif	297	#endif
213	#endif	298	#endif
214		299
215	#ifndef ECB_MEMORY_FENCE	300	#ifndef ECB_MEMORY_FENCE
216	#if !ECB_AVOID_PTHREADS	301	#if !ECB_AVOID_PTHREADS
…		…
236		321
237	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE	322	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
238	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	323	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
239	#endif	324	#endif
240		325
		326	#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
		327	#define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
		328	#endif
		329
241	/*****************************************************************************/	330	/*****************************************************************************/
242		331
243	#if __cplusplus	332	#if ECB_CPP
244	#define ecb_inline static inline	333	#define ecb_inline static inline
245	#elif ECB_GCC_VERSION(2,5)	334	#elif ECB_GCC_VERSION(2,5)
246	#define ecb_inline static __inline__	335	#define ecb_inline static __inline__
247	#elif ECB_C99	336	#elif ECB_C99
248	#define ecb_inline static inline	337	#define ecb_inline static inline
…		…
262		351
263	#define ECB_CONCAT_(a, b) a ## b	352	#define ECB_CONCAT_(a, b) a ## b
264	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	353	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
265	#define ECB_STRINGIFY_(a) # a	354	#define ECB_STRINGIFY_(a) # a
266	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	355	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		356	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
267		357
268	#define ecb_function_ ecb_inline	358	#define ecb_function_ ecb_inline
269		359
270	#if ECB_GCC_VERSION(3,1)	360	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
271	#define ecb_attribute(attrlist) __attribute__(attrlist)	361	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		362	#else
		363	#define ecb_attribute(attrlist)
		364	#endif
		365
		366	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_constant_p)
272	#define ecb_is_constant(expr) __builtin_constant_p (expr)	367	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		368	#else
		369	/* possible C11 impl for integral types
		370	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		371	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		372
		373	#define ecb_is_constant(expr) 0
		374	#endif
		375
		376	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_expect)
273	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	377	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		378	#else
		379	#define ecb_expect(expr,value) (expr)
		380	#endif
		381
		382	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_prefetch)
274	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	383	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
275	#else	384	#else
276	#define ecb_attribute(attrlist)
277	#define ecb_is_constant(expr) 0
278	#define ecb_expect(expr,value) (expr)
279	#define ecb_prefetch(addr,rw,locality)	385	#define ecb_prefetch(addr,rw,locality)
280	#endif	386	#endif
281		387
282	/* no emulation for ecb_decltype */	388	/* no emulation for ecb_decltype */
283	#if ECB_GCC_VERSION(4,5)	389	#if ECB_CPP11
		390	// older implementations might have problems with decltype(x)::type, work around it
		391	template<class T> struct ecb_decltype_t { typedef T type; };
284	#define ecb_decltype(x) __decltype(x)	392	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
285	#elif ECB_GCC_VERSION(3,0)	393	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
286	#define ecb_decltype(x) __typeof(x)	394	#define ecb_decltype(x) __typeof__ (x)
287	#endif	395	#endif
288		396
		397	#if _MSC_VER >= 1300
		398	#define ecb_deprecated __declspec (deprecated)
		399	#else
		400	#define ecb_deprecated ecb_attribute ((__deprecated__))
		401	#endif
		402
		403	#if _MSC_VER >= 1500
		404	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		405	#elif ECB_GCC_VERSION(4,5)
		406	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		407	#else
		408	#define ecb_deprecated_message(msg) ecb_deprecated
		409	#endif
		410
		411	#if _MSC_VER >= 1400
		412	#define ecb_noinline __declspec (noinline)
		413	#else
289	#define ecb_noinline ecb_attribute ((__noinline__))	414	#define ecb_noinline ecb_attribute ((__noinline__))
		415	#endif
		416
290	#define ecb_unused ecb_attribute ((__unused__))	417	#define ecb_unused ecb_attribute ((__unused__))
291	#define ecb_const ecb_attribute ((__const__))	418	#define ecb_const ecb_attribute ((__const__))
292	#define ecb_pure ecb_attribute ((__pure__))	419	#define ecb_pure ecb_attribute ((__pure__))
293		420
294	#if ECB_C11	421	#if ECB_C11 \|\| __IBMC_NORETURN
		422	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
295	#define ecb_noreturn _Noreturn	423	#define ecb_noreturn _Noreturn
		424	#elif ECB_CPP11
		425	#define ecb_noreturn [[noreturn]]
		426	#elif _MSC_VER >= 1200
		427	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		428	#define ecb_noreturn __declspec (noreturn)
296	#else	429	#else
297	#define ecb_noreturn ecb_attribute ((__noreturn__))	430	#define ecb_noreturn ecb_attribute ((__noreturn__))
298	#endif	431	#endif
299		432
300	#if ECB_GCC_VERSION(4,3)	433	#if ECB_GCC_VERSION(4,3)
…		…
315	/* for compatibility to the rest of the world */	448	/* for compatibility to the rest of the world */
316	#define ecb_likely(expr) ecb_expect_true (expr)	449	#define ecb_likely(expr) ecb_expect_true (expr)
317	#define ecb_unlikely(expr) ecb_expect_false (expr)	450	#define ecb_unlikely(expr) ecb_expect_false (expr)
318		451
319	/* count trailing zero bits and count # of one bits */	452	/* count trailing zero bits and count # of one bits */
320	#if ECB_GCC_VERSION(3,4)	453	#if ECB_GCC_VERSION(3,4) \
		454	\|\| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		455	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		456	&& ECB_CLANG_BUILTIN(__builtin_popcount))
321	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */	457	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
322	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	458	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
323	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	459	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
324	#define ecb_ctz32(x) __builtin_ctz (x)	460	#define ecb_ctz32(x) __builtin_ctz (x)
325	#define ecb_ctz64(x) __builtin_ctzll (x)	461	#define ecb_ctz64(x) __builtin_ctzll (x)
326	#define ecb_popcount32(x) __builtin_popcount (x)	462	#define ecb_popcount32(x) __builtin_popcount (x)
327	/* no popcountll */	463	/* no popcountll */
328	#else	464	#else
329	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	465	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
330	ecb_function_ int	466	ecb_function_ ecb_const int
331	ecb_ctz32 (uint32_t x)	467	ecb_ctz32 (uint32_t x)
332	{	468	{
		469	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		470	unsigned long r;
		471	_BitScanForward (&r, x);
		472	return (int)r;
		473	#else
333	int r = 0;	474	int r = 0;
334		475
335	x &= ~x + 1; /* this isolates the lowest bit */	476	x &= ~x + 1; /* this isolates the lowest bit */
336		477
337	#if ECB_branchless_on_i386	478	#if ECB_branchless_on_i386
…		…
347	if (x & 0xff00ff00) r += 8;	488	if (x & 0xff00ff00) r += 8;
348	if (x & 0xffff0000) r += 16;	489	if (x & 0xffff0000) r += 16;
349	#endif	490	#endif
350		491
351	return r;	492	return r;
		493	#endif
352	}	494	}
353		495
354	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	496	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
355	ecb_function_ int	497	ecb_function_ ecb_const int
356	ecb_ctz64 (uint64_t x)	498	ecb_ctz64 (uint64_t x)
357	{	499	{
		500	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		501	unsigned long r;
		502	_BitScanForward64 (&r, x);
		503	return (int)r;
		504	#else
358	int shift = x & 0xffffffffU ? 0 : 32;	505	int shift = x & 0xffffffff ? 0 : 32;
359	return ecb_ctz32 (x >> shift) + shift;	506	return ecb_ctz32 (x >> shift) + shift;
		507	#endif
360	}	508	}
361		509
362	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	510	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
363	ecb_function_ int	511	ecb_function_ ecb_const int
364	ecb_popcount32 (uint32_t x)	512	ecb_popcount32 (uint32_t x)
365	{	513	{
366	x -= (x >> 1) & 0x55555555;	514	x -= (x >> 1) & 0x55555555;
367	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	515	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
368	x = ((x >> 4) + x) & 0x0f0f0f0f;	516	x = ((x >> 4) + x) & 0x0f0f0f0f;
369	x *= 0x01010101;	517	x *= 0x01010101;
370		518
371	return x >> 24;	519	return x >> 24;
372	}	520	}
373		521
374	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	522	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
375	ecb_function_ int ecb_ld32 (uint32_t x)	523	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
376	{	524	{
		525	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		526	unsigned long r;
		527	_BitScanReverse (&r, x);
		528	return (int)r;
		529	#else
377	int r = 0;	530	int r = 0;
378		531
379	if (x >> 16) { x >>= 16; r += 16; }	532	if (x >> 16) { x >>= 16; r += 16; }
380	if (x >> 8) { x >>= 8; r += 8; }	533	if (x >> 8) { x >>= 8; r += 8; }
381	if (x >> 4) { x >>= 4; r += 4; }	534	if (x >> 4) { x >>= 4; r += 4; }
382	if (x >> 2) { x >>= 2; r += 2; }	535	if (x >> 2) { x >>= 2; r += 2; }
383	if (x >> 1) { r += 1; }	536	if (x >> 1) { r += 1; }
384		537
385	return r;	538	return r;
		539	#endif
386	}	540	}
387		541
388	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	542	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
389	ecb_function_ int ecb_ld64 (uint64_t x)	543	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
390	{	544	{
		545	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		546	unsigned long r;
		547	_BitScanReverse64 (&r, x);
		548	return (int)r;
		549	#else
391	int r = 0;	550	int r = 0;
392		551
393	if (x >> 32) { x >>= 32; r += 32; }	552	if (x >> 32) { x >>= 32; r += 32; }
394		553
395	return r + ecb_ld32 (x);	554	return r + ecb_ld32 (x);
396	}
397	#endif	555	#endif
		556	}
		557	#endif
398		558
399	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;	559	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
400	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }	560	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
401	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;	561	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
402	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }	562	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
403		563
404	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	564	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
405	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	565	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
406	{	566	{
407	return ( (x * 0x0802U & 0x22110U)	567	return ( (x * 0x0802U & 0x22110U)
408	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	568	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
409	}	569	}
410		570
411	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	571	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
412	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	572	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
413	{	573	{
414	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	574	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
415	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	575	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
416	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	576	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
417	x = ( x >> 8 ) \| ( x << 8);	577	x = ( x >> 8 ) \| ( x << 8);
418		578
419	return x;	579	return x;
420	}	580	}
421		581
422	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	582	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
423	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	583	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
424	{	584	{
425	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	585	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
426	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	586	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
427	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	587	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
428	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	588	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
431	return x;	591	return x;
432	}	592	}
433		593
434	/* popcount64 is only available on 64 bit cpus as gcc builtin */	594	/* popcount64 is only available on 64 bit cpus as gcc builtin */
435	/* so for this version we are lazy */	595	/* so for this version we are lazy */
436	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	596	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
437	ecb_function_ int	597	ecb_function_ ecb_const int
438	ecb_popcount64 (uint64_t x)	598	ecb_popcount64 (uint64_t x)
439	{	599	{
440	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	600	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
441	}	601	}
442		602
443	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;	603	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
444	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;	604	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
445	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;	605	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
446	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;	606	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
447	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;	607	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
448	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;	608	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
449	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;	609	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
450	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;	610	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
451		611
452	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }	612	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
453	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }	613	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
454	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }	614	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
455	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }	615	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
456	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }	616	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
457	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }	617	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
458	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }	618	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
459	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }	619	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
460		620
461	#if ECB_GCC_VERSION(4,3)	621	#if ECB_CPP
		622
		623	inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
		624	inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
		625	inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
		626	inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
		627
		628	inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
		629	inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
		630	inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
		631	inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
		632
		633	inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
		634	inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
		635	inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
		636	inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
		637
		638	inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
		639	inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
		640	inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
		641	inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
		642
		643	inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
		644	inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
		645	inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
		646
		647	inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
		648	inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
		649	inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
		650	inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
		651
		652	inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
		653	inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
		654	inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
		655	inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
		656
		657	#endif
		658
		659	#if ECB_GCC_VERSION(4,3) \|\| (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		660	#if ECB_GCC_VERSION(4,8) \|\| ECB_CLANG_BUILTIN(__builtin_bswap16)
		661	#define ecb_bswap16(x) __builtin_bswap16 (x)
		662	#else
462	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	663	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		664	#endif
463	#define ecb_bswap32(x) __builtin_bswap32 (x)	665	#define ecb_bswap32(x) __builtin_bswap32 (x)
464	#define ecb_bswap64(x) __builtin_bswap64 (x)	666	#define ecb_bswap64(x) __builtin_bswap64 (x)
		667	#elif _MSC_VER
		668	#include <stdlib.h>
		669	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		670	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		671	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
465	#else	672	#else
466	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	673	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
467	ecb_function_ uint16_t	674	ecb_function_ ecb_const uint16_t
468	ecb_bswap16 (uint16_t x)	675	ecb_bswap16 (uint16_t x)
469	{	676	{
470	return ecb_rotl16 (x, 8);	677	return ecb_rotl16 (x, 8);
471	}	678	}
472		679
473	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	680	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
474	ecb_function_ uint32_t	681	ecb_function_ ecb_const uint32_t
475	ecb_bswap32 (uint32_t x)	682	ecb_bswap32 (uint32_t x)
476	{	683	{
477	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	684	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
478	}	685	}
479		686
480	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	687	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
481	ecb_function_ uint64_t	688	ecb_function_ ecb_const uint64_t
482	ecb_bswap64 (uint64_t x)	689	ecb_bswap64 (uint64_t x)
483	{	690	{
484	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	691	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
485	}	692	}
486	#endif	693	#endif
487		694
488	#if ECB_GCC_VERSION(4,5)	695	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
489	#define ecb_unreachable() __builtin_unreachable ()	696	#define ecb_unreachable() __builtin_unreachable ()
490	#else	697	#else
491	/* this seems to work fine, but gcc always emits a warning for it :/ */	698	/* this seems to work fine, but gcc always emits a warning for it :/ */
492	ecb_inline void ecb_unreachable (void) ecb_noreturn;	699	ecb_inline ecb_noreturn void ecb_unreachable (void);
493	ecb_inline void ecb_unreachable (void) { }	700	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
494	#endif	701	#endif
495		702
496	/* try to tell the compiler that some condition is definitely true */	703	/* try to tell the compiler that some condition is definitely true */
497	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0	704	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
498		705
499	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	706	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
500	ecb_inline unsigned char	707	ecb_inline ecb_const uint32_t
501	ecb_byteorder_helper (void)	708	ecb_byteorder_helper (void)
502	{	709	{
503	/* the union code still generates code under pressure in gcc, */	710	/* the union code still generates code under pressure in gcc, */
504	/* but less than using pointers, and always seems to */	711	/* but less than using pointers, and always seems to */
505	/* successfully return a constant. */	712	/* successfully return a constant. */
506	/* the reason why we have this horrible preprocessor mess */	713	/* the reason why we have this horrible preprocessor mess */
507	/* is to avoid it in all cases, at least on common architectures */	714	/* is to avoid it in all cases, at least on common architectures */
508	/* or when using a recent enough gcc version (>= 4.6) */	715	/* or when using a recent enough gcc version (>= 4.6) */
509	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64
510	return 0x44;
511	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__	716	#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
		717	\|\| ((__i386 \|\| __i386__ \|\| _M_IX86 \|\| ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64) && !__VOS__)
		718	#define ECB_LITTLE_ENDIAN 1
512	return 0x44;	719	return 0x44332211;
513	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__	720	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		721	\|\| ((__AARCH64EB__ \|\| __MIPSEB__ \|\| __ARMEB__) && !__VOS__)
		722	#define ECB_BIG_ENDIAN 1
514	return 0x11;	723	return 0x11223344;
515	#else	724	#else
516	union	725	union
517	{	726	{
		727	uint8_t c[4];
518	uint32_t i;	728	uint32_t u;
519	uint8_t c;
520	} u = { 0x11223344 };	729	} u = { 0x11, 0x22, 0x33, 0x44 };
521	return u.c;	730	return u.u;
522	#endif	731	#endif
523	}	732	}
524		733
525	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	734	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
526	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	735	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
527	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	736	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
528	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	737	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
		738
		739	/*****************************************************************************/
		740	/* unaligned load/store */
		741
		742	ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
		743	ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
		744	ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
		745
		746	ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
		747	ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
		748	ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
		749
		750	ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		751	ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		752	ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		753
		754	ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
		755	ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
		756	ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
		757
		758	ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
		759	ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
		760	ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
		761
		762	ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
		763	ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
		764	ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
		765
		766	ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
		767	ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
		768	ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
		769
		770	ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
		771	ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
		772	ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
		773
		774	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)); }
		775	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)); }
		776	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)); }
		777
		778	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)); }
		779	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)); }
		780	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)); }
		781
		782	#if ECB_CPP
		783
		784	inline uint8_t ecb_bswap (uint8_t v) { return v; }
		785	inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
		786	inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
		787	inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
		788
		789	template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
		790	template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
		791	template<typename T> inline T ecb_peek (const void ptr) { return (const T *)ptr; }
		792	template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
		793	template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
		794	template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
		795	template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
		796	template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
		797
		798	template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
		799	template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
		800	template<typename T> inline void ecb_poke (void ptr, T v) { (T *)ptr = v; }
		801	template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
		802	template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
		803	template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
		804	template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
		805	template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
		806
		807	#endif
		808
		809	/*****************************************************************************/
		810	/* division */
529		811
530	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	812	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
		813	/* C99 tightened the definition of %, so we can use a more efficient version */
531	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	814	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
532	#else	815	#else
533	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	816	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
534	#endif	817	#endif
535		818
536	#if __cplusplus	819	#if ECB_CPP
537	template<typename T>	820	template<typename T>
538	static inline T ecb_div_rd (T val, T div)	821	static inline T ecb_div_rd (T val, T div)
539	{	822	{
540	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	823	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
541	}	824	}
…		…
546	}	829	}
547	#else	830	#else
548	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))	831	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
549	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))	832	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
550	#endif	833	#endif
		834
		835	/*****************************************************************************/
		836	/* array length */
551		837
552	#if ecb_cplusplus_does_not_suck	838	#if ecb_cplusplus_does_not_suck
553	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */	839	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
554	template<typename T, int N>	840	template<typename T, int N>
555	static inline int ecb_array_length (const T (&arr)[N])	841	static inline int ecb_array_length (const T (&arr)[N])
…		…
558	}	844	}
559	#else	845	#else
560	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	846	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
561	#endif	847	#endif
562		848
		849	/*****************************************************************************/
		850	/* IEEE 754-2008 half float conversions */
		851
		852	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		853	ecb_function_ ecb_const uint32_t
		854	ecb_binary16_to_binary32 (uint32_t x)
		855	{
		856	unsigned int s = (x & 0x8000) << (31 - 15);
		857	int e = (x >> 10) & 0x001f;
		858	unsigned int m = x & 0x03ff;
		859
		860	if (ecb_expect_false (e == 31))
		861	/* infinity or NaN */
		862	e = 255 - (127 - 15);
		863	else if (ecb_expect_false (!e))
		864	{
		865	if (ecb_expect_true (!m))
		866	/* zero, handled by code below by forcing e to 0 */
		867	e = 0 - (127 - 15);
		868	else
		869	{
		870	/* subnormal, renormalise */
		871	unsigned int s = 10 - ecb_ld32 (m);
		872
		873	m = (m << s) & 0x3ff; /* mask implicit bit */
		874	e -= s - 1;
		875	}
		876	}
		877
		878	/* e and m now are normalised, or zero, (or inf or nan) */
		879	e += 127 - 15;
		880
		881	return s \| (e << 23) \| (m << (23 - 10));
		882	}
		883
		884	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		885	ecb_function_ ecb_const uint16_t
		886	ecb_binary32_to_binary16 (uint32_t x)
		887	{
		888	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		889	int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		890	unsigned int m = x & 0x007fffff;
		891
		892	x &= 0x7fffffff;
		893
		894	/* if it's within range of binary16 normals, use fast path */
		895	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		896	{
		897	/* mantissa round-to-even */
		898	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		899
		900	/* handle overflow */
		901	if (ecb_expect_false (m >= 0x00800000))
		902	{
		903	m >>= 1;
		904	e += 1;
		905	}
		906
		907	return s \| (e << 10) \| (m >> (23 - 10));
		908	}
		909
		910	/* handle large numbers and infinity */
		911	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		912	return s \| 0x7c00;
		913
		914	/* handle zero, subnormals and small numbers */
		915	if (ecb_expect_true (x < 0x38800000))
		916	{
		917	/* zero */
		918	if (ecb_expect_true (!x))
		919	return s;
		920
		921	/* handle subnormals */
		922
		923	/* too small, will be zero */
		924	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		925	return s;
		926
		927	m \|= 0x00800000; /* make implicit bit explicit */
		928
		929	/* very tricky - we need to round to the nearest e (+10) bit value */
		930	{
		931	unsigned int bits = 14 - e;
		932	unsigned int half = (1 << (bits - 1)) - 1;
		933	unsigned int even = (m >> bits) & 1;
		934
		935	/* if this overflows, we will end up with a normalised number */
		936	m = (m + half + even) >> bits;
		937	}
		938
		939	return s \| m;
		940	}
		941
		942	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		943	m >>= 13;
		944
		945	return s \| 0x7c00 \| m \| !m;
		946	}
		947
563	/*******************************************************************************/	948	/*******************************************************************************/
564	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */	949	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
565		950
566	/* basically, everything uses "ieee pure-endian" floating point numbers */	951	/* basically, everything uses "ieee pure-endian" floating point numbers */
567	/* the only noteworthy exception is ancient armle, which uses order 43218765 */	952	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
568	#if 0 \	953	#if 0 \
569	\|\| __i386 \|\| __i386__ \	954	\|\| __i386 \|\| __i386__ \
570	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \	955	\|\| ECB_GCC_AMD64 \
571	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \	956	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
572	\|\| defined __arm__ && defined __ARM_EABI__ \
573	\|\| defined __s390__ \|\| defined __s390x__ \	957	\|\| defined __s390__ \|\| defined __s390x__ \
574	\|\| defined __mips__ \	958	\|\| defined __mips__ \
575	\|\| defined __alpha__ \	959	\|\| defined __alpha__ \
576	\|\| defined __hppa__ \	960	\|\| defined __hppa__ \
577	\|\| defined __ia64__ \	961	\|\| defined __ia64__ \
578	\|\| defined __m68k__ \	962	\|\| defined __m68k__ \
579	\|\| defined __m88k__ \	963	\|\| defined __m88k__ \
580	\|\| defined __sh__ \	964	\|\| defined __sh__ \
581	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64	965	\|\| defined _M_IX86 \|\| defined ECB_MSVC_AMD64 \|\| defined _M_IA64 \
		966	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__)) \
		967	\|\| defined __aarch64__
582	#define ECB_STDFP 1	968	#define ECB_STDFP 1
583	#include <string.h> /* for memcpy */
584	#else	969	#else
585	#define ECB_STDFP 0	970	#define ECB_STDFP 0
586	#endif	971	#endif
587		972
588	#ifndef ECB_NO_LIBM	973	#ifndef ECB_NO_LIBM
…		…
600	#define ECB_NAN NAN	985	#define ECB_NAN NAN
601	#else	986	#else
602	#define ECB_NAN ECB_INFINITY	987	#define ECB_NAN ECB_INFINITY
603	#endif	988	#endif
604		989
605	/* converts an ieee half/binary16 to a float */	990	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
606	ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;	991	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
607	ecb_function_ float	992	#define ecb_frexpf(x,e) frexpf ((x), (e))
608	ecb_binary16_to_float (uint16_t x)	993	#else
609	{	994	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
610	int e = (x >> 10) & 0x1f;	995	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
611	int m = x & 0x3ff;	996	#endif
612	float r;
613
614	if (!e ) r = ldexpf (m , -24);
615	else if (e != 31) r = ldexpf (m + 0x400, e - 25);
616	else if (m ) r = ECB_NAN;
617	else r = ECB_INFINITY;
618
619	return x & 0x8000 ? -r : r;
620	}
621		997
622	/* convert a float to ieee single/binary32 */	998	/* convert a float to ieee single/binary32 */
623	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;	999	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
624	ecb_function_ uint32_t	1000	ecb_function_ ecb_const uint32_t
625	ecb_float_to_binary32 (float x)	1001	ecb_float_to_binary32 (float x)
626	{	1002	{
627	uint32_t r;	1003	uint32_t r;
628		1004
629	#if ECB_STDFP	1005	#if ECB_STDFP
…		…
636	if (x == 0e0f ) return 0x00000000U;	1012	if (x == 0e0f ) return 0x00000000U;
637	if (x > +3.40282346638528860e+38f) return 0x7f800000U;	1013	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
638	if (x < -3.40282346638528860e+38f) return 0xff800000U;	1014	if (x < -3.40282346638528860e+38f) return 0xff800000U;
639	if (x != x ) return 0x7fbfffffU;	1015	if (x != x ) return 0x7fbfffffU;
640		1016
641	m = frexpf (x, &e) * 0x1000000U;	1017	m = ecb_frexpf (x, &e) * 0x1000000U;
642		1018
643	r = m & 0x80000000U;	1019	r = m & 0x80000000U;
644		1020
645	if (r)	1021	if (r)
646	m = -m;	1022	m = -m;
…		…
658		1034
659	return r;	1035	return r;
660	}	1036	}
661		1037
662	/* converts an ieee single/binary32 to a float */	1038	/* converts an ieee single/binary32 to a float */
663	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;	1039	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
664	ecb_function_ float	1040	ecb_function_ ecb_const float
665	ecb_binary32_to_float (uint32_t x)	1041	ecb_binary32_to_float (uint32_t x)
666	{	1042	{
667	float r;	1043	float r;
668		1044
669	#if ECB_STDFP	1045	#if ECB_STDFP
…		…
679	x \|= 0x800000U;	1055	x \|= 0x800000U;
680	else	1056	else
681	e = 1;	1057	e = 1;
682		1058
683	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /	1059	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
684	r = ldexpf (x * (0.5f / 0x800000U), e - 126);	1060	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
685		1061
686	r = neg ? -r : r;	1062	r = neg ? -r : r;
687	#endif	1063	#endif
688		1064
689	return r;	1065	return r;
690	}	1066	}
691		1067
692	/* convert a double to ieee double/binary64 */	1068	/* convert a double to ieee double/binary64 */
693	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;	1069	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
694	ecb_function_ uint64_t	1070	ecb_function_ ecb_const uint64_t
695	ecb_double_to_binary64 (double x)	1071	ecb_double_to_binary64 (double x)
696	{	1072	{
697	uint64_t r;	1073	uint64_t r;
698		1074
699	#if ECB_STDFP	1075	#if ECB_STDFP
…		…
728		1104
729	return r;	1105	return r;
730	}	1106	}
731		1107
732	/* converts an ieee double/binary64 to a double */	1108	/* converts an ieee double/binary64 to a double */
733	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;	1109	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
734	ecb_function_ double	1110	ecb_function_ ecb_const double
735	ecb_binary64_to_double (uint64_t x)	1111	ecb_binary64_to_double (uint64_t x)
736	{	1112	{
737	double r;	1113	double r;
738		1114
739	#if ECB_STDFP	1115	#if ECB_STDFP
…		…
757	#endif	1133	#endif
758		1134
759	return r;	1135	return r;
760	}	1136	}
761		1137
762	#endif	1138	/* convert a float to ieee half/binary16 */
		1139	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1140	ecb_function_ ecb_const uint16_t
		1141	ecb_float_to_binary16 (float x)
		1142	{
		1143	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1144	}
763		1145
764	#endif	1146	/* convert an ieee half/binary16 to float */
		1147	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1148	ecb_function_ ecb_const float
		1149	ecb_binary16_to_float (uint16_t x)
		1150	{
		1151	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1152	}
765		1153
		1154	#endif
		1155
		1156	#endif
		1157

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Comparing libecb/ecb.h (file contents): Revision 1.124 by root, Tue Dec 3 15:35:14 2013 UTC vs. Revision 1.189 by root, Mon Jun 21 21:26:48 2021 UTC

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Comparing libecb/ecb.h (file contents):
Revision 1.124 by root, Tue Dec 3 15:35:14 2013 UTC vs.
Revision 1.189 by root, Mon Jun 21 21:26:48 2021 UTC