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

Comparing libeio/ecb.h (file contents):
Revision 1.18 by root, Sat Sep 7 23:18:23 2013 UTC vs.
Revision 1.30 by root, Wed Feb 26 15:33:00 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 (©) 2009-2015,2018-2020 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 0x00010008
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
75	#endif	107	#endif
…		…
79	* causing enormous grief in return for some better fake benchmark numbers.	111	* causing enormous grief in return for some better fake benchmark numbers.
80	* or so.	112	* or so.
81	* we try to detect these and simply assume they are not gcc - if they have	113	* 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.	114	* an issue with that they should have done it right in the first place.
83	*/	115	*/
84	#ifndef ECB_GCC_VERSION
85	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__	116	#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	117	#define ECB_GCC_VERSION(major,minor) 0
87	#else	118	#else
88	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	119	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
89	#endif	120	#endif
90	#endif
91		121
92	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */	122	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
93	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	123
94	#define ECB_C11 (__STDC_VERSION__ >= 201112L)	124	#if __clang__ && defined __has_builtin
		125	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		126	#else
		127	#define ECB_CLANG_BUILTIN(x) 0
		128	#endif
		129
		130	#if __clang__ && defined __has_extension
		131	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		132	#else
		133	#define ECB_CLANG_EXTENSION(x) 0
		134	#endif
		135
95	#define ECB_CPP (__cplusplus+0)	136	#define ECB_CPP (__cplusplus+0)
96	#define ECB_CPP11 (__cplusplus >= 201103L)	137	#define ECB_CPP11 (__cplusplus >= 201103L)
		138	#define ECB_CPP14 (__cplusplus >= 201402L)
		139	#define ECB_CPP17 (__cplusplus >= 201703L)
		140
		141	#if ECB_CPP
		142	#define ECB_C 0
		143	#define ECB_STDC_VERSION 0
		144	#else
		145	#define ECB_C 1
		146	#define ECB_STDC_VERSION __STDC_VERSION__
		147	#endif
		148
		149	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		150	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		151	#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
97		152
98	#if ECB_CPP	153	#if ECB_CPP
99	#define ECB_EXTERN_C extern "C"	154	#define ECB_EXTERN_C extern "C"
100	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {	155	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
101	#define ECB_EXTERN_C_END }	156	#define ECB_EXTERN_C_END }
…		…
116		171
117	#if ECB_NO_SMP	172	#if ECB_NO_SMP
118	#define ECB_MEMORY_FENCE do { } while (0)	173	#define ECB_MEMORY_FENCE do { } while (0)
119	#endif	174	#endif
120		175
		176	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
		177	#if __xlC__ && ECB_CPP
		178	#include <builtins.h>
		179	#endif
		180
		181	#if 1400 <= _MSC_VER
		182	#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
		183	#endif
		184
121	#ifndef ECB_MEMORY_FENCE	185	#ifndef ECB_MEMORY_FENCE
122	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	186	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
		187	#define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
123	#if __i386 \|\| __i386__	188	#if __i386 \|\| __i386__
124	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	189	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
125	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	190	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
126	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	191	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
127	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	192	#elif ECB_GCC_AMD64
128	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	193	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
129	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	194	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
130	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	195	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
131	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	196	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
132	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	197	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		198	#elif defined __ARM_ARCH_2__ \
		199	\|\| defined __ARM_ARCH_3__ \|\| defined __ARM_ARCH_3M__ \
		200	\|\| defined __ARM_ARCH_4__ \|\| defined __ARM_ARCH_4T__ \
		201	\|\| defined __ARM_ARCH_5__ \|\| defined __ARM_ARCH_5E__ \
		202	\|\| defined __ARM_ARCH_5T__ \|\| defined __ARM_ARCH_5TE__ \
		203	\|\| defined __ARM_ARCH_5TEJ__
		204	/* 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__ \	205	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
134	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	206	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__ \
		207	\|\| defined __ARM_ARCH_6T2__
135	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")	208	#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__ \	209	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
137	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	210	\|\| defined __ARM_ARCH_7R__ \|\| defined __ARM_ARCH_7M__
138	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	211	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
139	#elif __sparc \|\| __sparc__	212	#elif __aarch64__
		213	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		214	#elif (__sparc \|\| __sparc__) && !(__sparc_v8__ \|\| defined __sparcv8)
140	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")	215	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
141	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	216	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
142	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	217	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
143	#elif defined __s390__ \|\| defined __s390x__	218	#elif defined __s390__ \|\| defined __s390x__
144	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	219	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
145	#elif defined __mips__	220	#elif defined __mips__
146	/* GNU/Linux emulates sync on mips1 architectures, so we force it's use */	221	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
147	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */	222	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
148	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")	223	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
149	#elif defined __alpha__	224	#elif defined __alpha__
150	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	225	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
151	#elif defined __hppa__	226	#elif defined __hppa__
152	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")	227	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
153	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	228	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
154	#elif defined __ia64__	229	#elif defined __ia64__
155	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")	230	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		231	#elif defined __m68k__
		232	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		233	#elif defined __m88k__
		234	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		235	#elif defined __sh__
		236	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
156	#endif	237	#endif
157	#endif	238	#endif
158	#endif	239	#endif
159		240
160	#ifndef ECB_MEMORY_FENCE	241	#ifndef ECB_MEMORY_FENCE
161	#if ECB_GCC_VERSION(4,7)	242	#if ECB_GCC_VERSION(4,7)
162	/* see comment below (stdatomic.h) about the C11 memory model. */	243	/* see comment below (stdatomic.h) about the C11 memory model. */
163	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)	244	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		245	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		246	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		247	#define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
164		248
165	/* The __has_feature syntax from clang is so misdesigned that we cannot use it	249	#elif ECB_CLANG_EXTENSION(c_atomic)
166	* without risking compile time errors with other compilers. We could
167	* define our own ecb_clang_has_feature, but I just can't be bothered to work
168	* around this shit time and again.
169	* #elif defined __clang && __has_feature (cxx_atomic)
170	* // see comment below (stdatomic.h) about the C11 memory model.	250	/* see comment below (stdatomic.h) about the C11 memory model. */
171	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)	251	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
172	*/	252	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		253	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		254	#define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
173		255
174	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	256	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
175	#define ECB_MEMORY_FENCE __sync_synchronize ()	257	#define ECB_MEMORY_FENCE __sync_synchronize ()
		258	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		259	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		260	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		261	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		262	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		263	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
176	#elif _MSC_VER >= 1400 /* VC++ 2005 */	264	#elif _MSC_VER >= 1400 /* VC++ 2005 */
177	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	265	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
178	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	266	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
179	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	267	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
180	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	268	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
181	#elif defined _WIN32	269	#elif defined _WIN32
182	#include <WinNT.h>	270	#include <WinNT.h>
183	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */	271	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
184	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	272	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
185	#include <mbarrier.h>	273	#include <mbarrier.h>
186	#define ECB_MEMORY_FENCE __machine_rw_barrier ()	274	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
187	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()	275	#define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
188	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()	276	#define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
		277	#define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
189	#elif __xlC__	278	#elif __xlC__
190	#define ECB_MEMORY_FENCE __sync ()	279	#define ECB_MEMORY_FENCE __sync ()
191	#endif	280	#endif
192	#endif	281	#endif
193		282
194	#ifndef ECB_MEMORY_FENCE	283	#ifndef ECB_MEMORY_FENCE
195	#if ECB_C11 && !defined __STDC_NO_ATOMICS__	284	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
196	/* we assume that these memory fences work on all variables/all memory accesses, */	285	/* we assume that these memory fences work on all variables/all memory accesses, */
197	/* not just C11 atomics and atomic accesses */	286	/* not just C11 atomics and atomic accesses */
198	#include <stdatomic.h>	287	#include <stdatomic.h>
199	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
200	/* any fence other than seq_cst, which isn't very efficient for us. */
201	/* Why that is, we don't know - either the C11 memory model is quite useless */
202	/* for most usages, or gcc and clang have a bug */
203	/* I currently lean towards the latter, and inefficiently implement */
204	/* all three of ecb's fences as a seq_cst fence */
205	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)	288	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		289	#define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
		290	#define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
206	#endif	291	#endif
207	#endif	292	#endif
208		293
209	#ifndef ECB_MEMORY_FENCE	294	#ifndef ECB_MEMORY_FENCE
210	#if !ECB_AVOID_PTHREADS	295	#if !ECB_AVOID_PTHREADS
…		…
230		315
231	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE	316	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
232	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	317	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
233	#endif	318	#endif
234		319
		320	#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
		321	#define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
		322	#endif
		323
235	/*****************************************************************************/	324	/*****************************************************************************/
236		325
237	#if __cplusplus	326	#if ECB_CPP
238	#define ecb_inline static inline	327	#define ecb_inline static inline
239	#elif ECB_GCC_VERSION(2,5)	328	#elif ECB_GCC_VERSION(2,5)
240	#define ecb_inline static __inline__	329	#define ecb_inline static __inline__
241	#elif ECB_C99	330	#elif ECB_C99
242	#define ecb_inline static inline	331	#define ecb_inline static inline
…		…
256		345
257	#define ECB_CONCAT_(a, b) a ## b	346	#define ECB_CONCAT_(a, b) a ## b
258	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	347	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
259	#define ECB_STRINGIFY_(a) # a	348	#define ECB_STRINGIFY_(a) # a
260	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	349	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		350	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
261		351
262	#define ecb_function_ ecb_inline	352	#define ecb_function_ ecb_inline
263		353
264	#if ECB_GCC_VERSION(3,1)	354	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
265	#define ecb_attribute(attrlist) __attribute__(attrlist)	355	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		356	#else
		357	#define ecb_attribute(attrlist)
		358	#endif
		359
		360	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_constant_p)
266	#define ecb_is_constant(expr) __builtin_constant_p (expr)	361	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		362	#else
		363	/* possible C11 impl for integral types
		364	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		365	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		366
		367	#define ecb_is_constant(expr) 0
		368	#endif
		369
		370	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_expect)
267	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	371	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		372	#else
		373	#define ecb_expect(expr,value) (expr)
		374	#endif
		375
		376	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_prefetch)
268	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	377	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
269	#else	378	#else
270	#define ecb_attribute(attrlist)
271	#define ecb_is_constant(expr) 0
272	#define ecb_expect(expr,value) (expr)
273	#define ecb_prefetch(addr,rw,locality)	379	#define ecb_prefetch(addr,rw,locality)
274	#endif	380	#endif
275		381
276	/* no emulation for ecb_decltype */	382	/* no emulation for ecb_decltype */
277	#if ECB_GCC_VERSION(4,5)	383	#if ECB_CPP11
		384	// older implementations might have problems with decltype(x)::type, work around it
		385	template<class T> struct ecb_decltype_t { typedef T type; };
278	#define ecb_decltype(x) __decltype(x)	386	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
279	#elif ECB_GCC_VERSION(3,0)	387	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
280	#define ecb_decltype(x) __typeof(x)	388	#define ecb_decltype(x) __typeof__ (x)
281	#endif	389	#endif
282		390
		391	#if _MSC_VER >= 1300
		392	#define ecb_deprecated __declspec (deprecated)
		393	#else
		394	#define ecb_deprecated ecb_attribute ((__deprecated__))
		395	#endif
		396
		397	#if _MSC_VER >= 1500
		398	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		399	#elif ECB_GCC_VERSION(4,5)
		400	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		401	#else
		402	#define ecb_deprecated_message(msg) ecb_deprecated
		403	#endif
		404
		405	#if _MSC_VER >= 1400
		406	#define ecb_noinline __declspec (noinline)
		407	#else
283	#define ecb_noinline ecb_attribute ((__noinline__))	408	#define ecb_noinline ecb_attribute ((__noinline__))
		409	#endif
		410
284	#define ecb_unused ecb_attribute ((__unused__))	411	#define ecb_unused ecb_attribute ((__unused__))
285	#define ecb_const ecb_attribute ((__const__))	412	#define ecb_const ecb_attribute ((__const__))
286	#define ecb_pure ecb_attribute ((__pure__))	413	#define ecb_pure ecb_attribute ((__pure__))
287		414
288	#if ECB_C11	415	#if ECB_C11 \|\| __IBMC_NORETURN
		416	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
289	#define ecb_noreturn _Noreturn	417	#define ecb_noreturn _Noreturn
		418	#elif ECB_CPP11
		419	#define ecb_noreturn [[noreturn]]
		420	#elif _MSC_VER >= 1200
		421	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		422	#define ecb_noreturn __declspec (noreturn)
290	#else	423	#else
291	#define ecb_noreturn ecb_attribute ((__noreturn__))	424	#define ecb_noreturn ecb_attribute ((__noreturn__))
292	#endif	425	#endif
293		426
294	#if ECB_GCC_VERSION(4,3)	427	#if ECB_GCC_VERSION(4,3)
…		…
309	/* for compatibility to the rest of the world */	442	/* for compatibility to the rest of the world */
310	#define ecb_likely(expr) ecb_expect_true (expr)	443	#define ecb_likely(expr) ecb_expect_true (expr)
311	#define ecb_unlikely(expr) ecb_expect_false (expr)	444	#define ecb_unlikely(expr) ecb_expect_false (expr)
312		445
313	/* count trailing zero bits and count # of one bits */	446	/* count trailing zero bits and count # of one bits */
314	#if ECB_GCC_VERSION(3,4)	447	#if ECB_GCC_VERSION(3,4) \
		448	\|\| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		449	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		450	&& ECB_CLANG_BUILTIN(__builtin_popcount))
315	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */	451	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
316	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	452	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
317	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	453	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
318	#define ecb_ctz32(x) __builtin_ctz (x)	454	#define ecb_ctz32(x) __builtin_ctz (x)
319	#define ecb_ctz64(x) __builtin_ctzll (x)	455	#define ecb_ctz64(x) __builtin_ctzll (x)
320	#define ecb_popcount32(x) __builtin_popcount (x)	456	#define ecb_popcount32(x) __builtin_popcount (x)
321	/* no popcountll */	457	/* no popcountll */
322	#else	458	#else
323	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	459	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
324	ecb_function_ int	460	ecb_function_ ecb_const int
325	ecb_ctz32 (uint32_t x)	461	ecb_ctz32 (uint32_t x)
326	{	462	{
		463	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		464	unsigned long r;
		465	_BitScanForward (&r, x);
		466	return (int)r;
		467	#else
327	int r = 0;	468	int r = 0;
328		469
329	x &= ~x + 1; /* this isolates the lowest bit */	470	x &= ~x + 1; /* this isolates the lowest bit */
330		471
331	#if ECB_branchless_on_i386	472	#if ECB_branchless_on_i386
…		…
341	if (x & 0xff00ff00) r += 8;	482	if (x & 0xff00ff00) r += 8;
342	if (x & 0xffff0000) r += 16;	483	if (x & 0xffff0000) r += 16;
343	#endif	484	#endif
344		485
345	return r;	486	return r;
		487	#endif
346	}	488	}
347		489
348	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	490	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
349	ecb_function_ int	491	ecb_function_ ecb_const int
350	ecb_ctz64 (uint64_t x)	492	ecb_ctz64 (uint64_t x)
351	{	493	{
		494	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		495	unsigned long r;
		496	_BitScanForward64 (&r, x);
		497	return (int)r;
		498	#else
352	int shift = x & 0xffffffffU ? 0 : 32;	499	int shift = x & 0xffffffff ? 0 : 32;
353	return ecb_ctz32 (x >> shift) + shift;	500	return ecb_ctz32 (x >> shift) + shift;
		501	#endif
354	}	502	}
355		503
356	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	504	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
357	ecb_function_ int	505	ecb_function_ ecb_const int
358	ecb_popcount32 (uint32_t x)	506	ecb_popcount32 (uint32_t x)
359	{	507	{
360	x -= (x >> 1) & 0x55555555;	508	x -= (x >> 1) & 0x55555555;
361	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	509	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
362	x = ((x >> 4) + x) & 0x0f0f0f0f;	510	x = ((x >> 4) + x) & 0x0f0f0f0f;
363	x *= 0x01010101;	511	x *= 0x01010101;
364		512
365	return x >> 24;	513	return x >> 24;
366	}	514	}
367		515
368	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	516	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
369	ecb_function_ int ecb_ld32 (uint32_t x)	517	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
370	{	518	{
		519	#if 1400 <= _MSC_VER && (_M_IX86 \|\| _M_X64 \|\| _M_IA64 \|\| _M_ARM)
		520	unsigned long r;
		521	_BitScanReverse (&r, x);
		522	return (int)r;
		523	#else
371	int r = 0;	524	int r = 0;
372		525
373	if (x >> 16) { x >>= 16; r += 16; }	526	if (x >> 16) { x >>= 16; r += 16; }
374	if (x >> 8) { x >>= 8; r += 8; }	527	if (x >> 8) { x >>= 8; r += 8; }
375	if (x >> 4) { x >>= 4; r += 4; }	528	if (x >> 4) { x >>= 4; r += 4; }
376	if (x >> 2) { x >>= 2; r += 2; }	529	if (x >> 2) { x >>= 2; r += 2; }
377	if (x >> 1) { r += 1; }	530	if (x >> 1) { r += 1; }
378		531
379	return r;	532	return r;
		533	#endif
380	}	534	}
381		535
382	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	536	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
383	ecb_function_ int ecb_ld64 (uint64_t x)	537	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
384	{	538	{
		539	#if 1400 <= _MSC_VER && (_M_X64 \|\| _M_IA64 \|\| _M_ARM)
		540	unsigned long r;
		541	_BitScanReverse64 (&r, x);
		542	return (int)r;
		543	#else
385	int r = 0;	544	int r = 0;
386		545
387	if (x >> 32) { x >>= 32; r += 32; }	546	if (x >> 32) { x >>= 32; r += 32; }
388		547
389	return r + ecb_ld32 (x);	548	return r + ecb_ld32 (x);
390	}
391	#endif	549	#endif
		550	}
		551	#endif
392		552
393	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;	553	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
394	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }	554	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
395	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;	555	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
396	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }	556	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
397		557
398	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	558	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
399	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	559	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
400	{	560	{
401	return ( (x * 0x0802U & 0x22110U)	561	return ( (x * 0x0802U & 0x22110U)
402	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	562	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
403	}	563	}
404		564
405	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	565	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
406	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	566	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
407	{	567	{
408	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	568	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
409	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	569	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
410	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	570	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
411	x = ( x >> 8 ) \| ( x << 8);	571	x = ( x >> 8 ) \| ( x << 8);
412		572
413	return x;	573	return x;
414	}	574	}
415		575
416	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	576	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
417	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	577	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
418	{	578	{
419	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	579	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
420	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	580	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
421	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	581	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
422	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	582	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
425	return x;	585	return x;
426	}	586	}
427		587
428	/* popcount64 is only available on 64 bit cpus as gcc builtin */	588	/* popcount64 is only available on 64 bit cpus as gcc builtin */
429	/* so for this version we are lazy */	589	/* so for this version we are lazy */
430	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	590	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
431	ecb_function_ int	591	ecb_function_ ecb_const int
432	ecb_popcount64 (uint64_t x)	592	ecb_popcount64 (uint64_t x)
433	{	593	{
434	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	594	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
435	}	595	}
436		596
437	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;	597	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
438	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;	598	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
439	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;	599	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
440	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;	600	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
441	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;	601	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
442	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;	602	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
443	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;	603	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
444	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;	604	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
445		605
446	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }	606	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
447	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }	607	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
448	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }	608	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
449	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }	609	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
450	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }	610	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
451	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }	611	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
452	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }	612	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
453	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }	613	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
454		614
455	#if ECB_GCC_VERSION(4,3)	615	#if ECB_CPP
		616
		617	inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
		618	inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
		619	inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
		620	inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
		621
		622	inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
		623	inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
		624	inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
		625	inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
		626
		627	inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
		628	inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
		629	inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
		630	inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
		631
		632	inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
		633	inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
		634	inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
		635	inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
		636
		637	inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
		638	inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
		639	inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
		640
		641	inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
		642	inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
		643	inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
		644	inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
		645
		646	inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
		647	inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
		648	inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
		649	inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
		650
		651	#endif
		652
		653	#if ECB_GCC_VERSION(4,3) \|\| (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		654	#if ECB_GCC_VERSION(4,8) \|\| ECB_CLANG_BUILTIN(__builtin_bswap16)
		655	#define ecb_bswap16(x) __builtin_bswap16 (x)
		656	#else
456	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	657	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		658	#endif
457	#define ecb_bswap32(x) __builtin_bswap32 (x)	659	#define ecb_bswap32(x) __builtin_bswap32 (x)
458	#define ecb_bswap64(x) __builtin_bswap64 (x)	660	#define ecb_bswap64(x) __builtin_bswap64 (x)
		661	#elif _MSC_VER
		662	#include <stdlib.h>
		663	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		664	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		665	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
459	#else	666	#else
460	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	667	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
461	ecb_function_ uint16_t	668	ecb_function_ ecb_const uint16_t
462	ecb_bswap16 (uint16_t x)	669	ecb_bswap16 (uint16_t x)
463	{	670	{
464	return ecb_rotl16 (x, 8);	671	return ecb_rotl16 (x, 8);
465	}	672	}
466		673
467	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	674	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
468	ecb_function_ uint32_t	675	ecb_function_ ecb_const uint32_t
469	ecb_bswap32 (uint32_t x)	676	ecb_bswap32 (uint32_t x)
470	{	677	{
471	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	678	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
472	}	679	}
473		680
474	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	681	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
475	ecb_function_ uint64_t	682	ecb_function_ ecb_const uint64_t
476	ecb_bswap64 (uint64_t x)	683	ecb_bswap64 (uint64_t x)
477	{	684	{
478	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	685	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
479	}	686	}
480	#endif	687	#endif
481		688
482	#if ECB_GCC_VERSION(4,5)	689	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
483	#define ecb_unreachable() __builtin_unreachable ()	690	#define ecb_unreachable() __builtin_unreachable ()
484	#else	691	#else
485	/* this seems to work fine, but gcc always emits a warning for it :/ */	692	/* this seems to work fine, but gcc always emits a warning for it :/ */
486	ecb_inline void ecb_unreachable (void) ecb_noreturn;	693	ecb_inline ecb_noreturn void ecb_unreachable (void);
487	ecb_inline void ecb_unreachable (void) { }	694	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
488	#endif	695	#endif
489		696
490	/* try to tell the compiler that some condition is definitely true */	697	/* try to tell the compiler that some condition is definitely true */
491	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0	698	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
492		699
493	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	700	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
494	ecb_inline unsigned char	701	ecb_inline ecb_const uint32_t
495	ecb_byteorder_helper (void)	702	ecb_byteorder_helper (void)
496	{	703	{
497	/* the union code still generates code under pressure in gcc, */	704	/* the union code still generates code under pressure in gcc, */
498	/* but less than using pointers, and always seems to */	705	/* but less than using pointers, and always seems to */
499	/* successfully return a constant. */	706	/* successfully return a constant. */
500	/* the reason why we have this horrible preprocessor mess */	707	/* the reason why we have this horrible preprocessor mess */
501	/* is to avoid it in all cases, at least on common architectures */	708	/* is to avoid it in all cases, at least on common architectures */
502	/* or when using a recent enough gcc version (>= 4.6) */	709	/* or when using a recent enough gcc version (>= 4.6) */
503	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64
504	return 0x44;
505	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__	710	#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
		711	\|\| ((__i386 \|\| __i386__ \|\| _M_IX86 \|\| ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64) && !__VOS__)
		712	#define ECB_LITTLE_ENDIAN 1
506	return 0x44;	713	return 0x44332211;
507	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__	714	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		715	\|\| ((__AARCH64EB__ \|\| __MIPSEB__ \|\| __ARMEB__) && !__VOS__)
		716	#define ECB_BIG_ENDIAN 1
508	return 0x11;	717	return 0x11223344;
509	#else	718	#else
510	union	719	union
511	{	720	{
		721	uint8_t c[4];
512	uint32_t i;	722	uint32_t u;
513	uint8_t c;
514	} u = { 0x11223344 };	723	} u = { 0x11, 0x22, 0x33, 0x44 };
515	return u.c;	724	return u.u;
516	#endif	725	#endif
517	}	726	}
518		727
519	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	728	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
520	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	729	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
521	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	730	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
522	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	731	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
		732
		733	/*****************************************************************************/
		734	/* unaligned load/store */
		735
		736	ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
		737	ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
		738	ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
		739
		740	ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
		741	ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
		742	ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
		743
		744	ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		745	ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		746	ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
		747
		748	ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
		749	ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
		750	ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
		751
		752	ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
		753	ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
		754	ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
		755
		756	ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
		757	ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
		758	ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
		759
		760	ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
		761	ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
		762	ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
		763
		764	ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
		765	ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
		766	ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
		767
		768	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)); }
		769	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)); }
		770	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)); }
		771
		772	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)); }
		773	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)); }
		774	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)); }
		775
		776	#if ECB_CPP
		777
		778	inline uint8_t ecb_bswap (uint8_t v) { return v; }
		779	inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
		780	inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
		781	inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
		782
		783	template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
		784	template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
		785	template<typename T> inline T ecb_peek (const void ptr) { return (const T *)ptr; }
		786	template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
		787	template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
		788	template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
		789	template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
		790	template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
		791
		792	template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
		793	template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
		794	template<typename T> inline void ecb_poke (void ptr, T v) { (T *)ptr = v; }
		795	template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
		796	template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
		797	template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
		798	template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
		799	template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
		800
		801	#endif
		802
		803	/*****************************************************************************/
523		804
524	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	805	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
525	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	806	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
526	#else	807	#else
527	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	808	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
528	#endif	809	#endif
529		810
530	#if __cplusplus	811	#if ECB_CPP
531	template<typename T>	812	template<typename T>
532	static inline T ecb_div_rd (T val, T div)	813	static inline T ecb_div_rd (T val, T div)
533	{	814	{
534	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	815	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
535	}	816	}
…		…
552	}	833	}
553	#else	834	#else
554	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	835	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
555	#endif	836	#endif
556		837
		838	/*****************************************************************************/
		839
		840	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		841	ecb_function_ ecb_const uint32_t
		842	ecb_binary16_to_binary32 (uint32_t x)
		843	{
		844	unsigned int s = (x & 0x8000) << (31 - 15);
		845	int e = (x >> 10) & 0x001f;
		846	unsigned int m = x & 0x03ff;
		847
		848	if (ecb_expect_false (e == 31))
		849	/* infinity or NaN */
		850	e = 255 - (127 - 15);
		851	else if (ecb_expect_false (!e))
		852	{
		853	if (ecb_expect_true (!m))
		854	/* zero, handled by code below by forcing e to 0 */
		855	e = 0 - (127 - 15);
		856	else
		857	{
		858	/* subnormal, renormalise */
		859	unsigned int s = 10 - ecb_ld32 (m);
		860
		861	m = (m << s) & 0x3ff; /* mask implicit bit */
		862	e -= s - 1;
		863	}
		864	}
		865
		866	/* e and m now are normalised, or zero, (or inf or nan) */
		867	e += 127 - 15;
		868
		869	return s \| (e << 23) \| (m << (23 - 10));
		870	}
		871
		872	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		873	ecb_function_ ecb_const uint16_t
		874	ecb_binary32_to_binary16 (uint32_t x)
		875	{
		876	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		877	unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		878	unsigned int m = x & 0x007fffff;
		879
		880	x &= 0x7fffffff;
		881
		882	/* if it's within range of binary16 normals, use fast path */
		883	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		884	{
		885	/* mantissa round-to-even */
		886	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		887
		888	/* handle overflow */
		889	if (ecb_expect_false (m >= 0x00800000))
		890	{
		891	m >>= 1;
		892	e += 1;
		893	}
		894
		895	return s \| (e << 10) \| (m >> (23 - 10));
		896	}
		897
		898	/* handle large numbers and infinity */
		899	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		900	return s \| 0x7c00;
		901
		902	/* handle zero, subnormals and small numbers */
		903	if (ecb_expect_true (x < 0x38800000))
		904	{
		905	/* zero */
		906	if (ecb_expect_true (!x))
		907	return s;
		908
		909	/* handle subnormals */
		910
		911	/* too small, will be zero */
		912	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		913	return s;
		914
		915	m \|= 0x00800000; /* make implicit bit explicit */
		916
		917	/* very tricky - we need to round to the nearest e (+10) bit value */
		918	{
		919	unsigned int bits = 14 - e;
		920	unsigned int half = (1 << (bits - 1)) - 1;
		921	unsigned int even = (m >> bits) & 1;
		922
		923	/* if this overflows, we will end up with a normalised number */
		924	m = (m + half + even) >> bits;
		925	}
		926
		927	return s \| m;
		928	}
		929
		930	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		931	m >>= 13;
		932
		933	return s \| 0x7c00 \| m \| !m;
		934	}
		935
557	/*******************************************************************************/	936	/*******************************************************************************/
558	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */	937	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
559		938
560	/* basically, everything uses "ieee pure-endian" floating point numbers */	939	/* basically, everything uses "ieee pure-endian" floating point numbers */
561	/* the only noteworthy exception is ancient armle, which uses order 43218765 */	940	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
562	#if 0 \	941	#if 0 \
563	\|\| __i386 \|\| __i386__ \	942	\|\| __i386 \|\| __i386__ \
564	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \	943	\|\| ECB_GCC_AMD64 \
565	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \	944	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
566	\|\| defined __arm__ && defined __ARM_EABI__ \
567	\|\| defined __s390__ \|\| defined __s390x__ \	945	\|\| defined __s390__ \|\| defined __s390x__ \
568	\|\| defined __mips__ \	946	\|\| defined __mips__ \
569	\|\| defined __alpha__ \	947	\|\| defined __alpha__ \
570	\|\| defined __hppa__ \	948	\|\| defined __hppa__ \
571	\|\| defined __ia64__ \	949	\|\| defined __ia64__ \
		950	\|\| defined __m68k__ \
		951	\|\| defined __m88k__ \
		952	\|\| defined __sh__ \
572	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64	953	\|\| defined _M_IX86 \|\| defined ECB_MSVC_AMD64 \|\| defined _M_IA64 \
		954	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__)) \
		955	\|\| defined __aarch64__
573	#define ECB_STDFP 1	956	#define ECB_STDFP 1
574	#include <string.h> /* for memcpy */
575	#else	957	#else
576	#define ECB_STDFP 0	958	#define ECB_STDFP 0
577	#include <math.h> /* for frexp, ldexp */
578	#endif	959	#endif
579		960
580	#ifndef ECB_NO_LIBM	961	#ifndef ECB_NO_LIBM
581		962
		963	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		964
		965	/* only the oldest of old doesn't have this one. solaris. */
		966	#ifdef INFINITY
		967	#define ECB_INFINITY INFINITY
		968	#else
		969	#define ECB_INFINITY HUGE_VAL
		970	#endif
		971
		972	#ifdef NAN
		973	#define ECB_NAN NAN
		974	#else
		975	#define ECB_NAN ECB_INFINITY
		976	#endif
		977
		978	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
		979	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		980	#define ecb_frexpf(x,e) frexpf ((x), (e))
		981	#else
		982	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		983	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		984	#endif
		985
582	/* convert a float to ieee single/binary32 */	986	/* convert a float to ieee single/binary32 */
583	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;	987	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
584	ecb_function_ uint32_t	988	ecb_function_ ecb_const uint32_t
585	ecb_float_to_binary32 (float x)	989	ecb_float_to_binary32 (float x)
586	{	990	{
587	uint32_t r;	991	uint32_t r;
588		992
589	#if ECB_STDFP	993	#if ECB_STDFP
…		…
596	if (x == 0e0f ) return 0x00000000U;	1000	if (x == 0e0f ) return 0x00000000U;
597	if (x > +3.40282346638528860e+38f) return 0x7f800000U;	1001	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
598	if (x < -3.40282346638528860e+38f) return 0xff800000U;	1002	if (x < -3.40282346638528860e+38f) return 0xff800000U;
599	if (x != x ) return 0x7fbfffffU;	1003	if (x != x ) return 0x7fbfffffU;
600		1004
601	m = frexpf (x, &e) * 0x1000000U;	1005	m = ecb_frexpf (x, &e) * 0x1000000U;
602		1006
603	r = m & 0x80000000U;	1007	r = m & 0x80000000U;
604		1008
605	if (r)	1009	if (r)
606	m = -m;	1010	m = -m;
…		…
618		1022
619	return r;	1023	return r;
620	}	1024	}
621		1025
622	/* converts an ieee single/binary32 to a float */	1026	/* converts an ieee single/binary32 to a float */
623	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;	1027	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
624	ecb_function_ float	1028	ecb_function_ ecb_const float
625	ecb_binary32_to_float (uint32_t x)	1029	ecb_binary32_to_float (uint32_t x)
626	{	1030	{
627	float r;	1031	float r;
628		1032
629	#if ECB_STDFP	1033	#if ECB_STDFP
…		…
639	x \|= 0x800000U;	1043	x \|= 0x800000U;
640	else	1044	else
641	e = 1;	1045	e = 1;
642		1046
643	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /	1047	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
644	r = ldexpf (x * (0.5f / 0x800000U), e - 126);	1048	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
645		1049
646	r = neg ? -r : r;	1050	r = neg ? -r : r;
647	#endif	1051	#endif
648		1052
649	return r;	1053	return r;
650	}	1054	}
651		1055
652	/* convert a double to ieee double/binary64 */	1056	/* convert a double to ieee double/binary64 */
653	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;	1057	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
654	ecb_function_ uint64_t	1058	ecb_function_ ecb_const uint64_t
655	ecb_double_to_binary64 (double x)	1059	ecb_double_to_binary64 (double x)
656	{	1060	{
657	uint64_t r;	1061	uint64_t r;
658		1062
659	#if ECB_STDFP	1063	#if ECB_STDFP
…		…
688		1092
689	return r;	1093	return r;
690	}	1094	}
691		1095
692	/* converts an ieee double/binary64 to a double */	1096	/* converts an ieee double/binary64 to a double */
693	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;	1097	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
694	ecb_function_ double	1098	ecb_function_ ecb_const double
695	ecb_binary64_to_double (uint64_t x)	1099	ecb_binary64_to_double (uint64_t x)
696	{	1100	{
697	double r;	1101	double r;
698		1102
699	#if ECB_STDFP	1103	#if ECB_STDFP
…		…
717	#endif	1121	#endif
718		1122
719	return r;	1123	return r;
720	}	1124	}
721		1125
722	#endif	1126	/* convert a float to ieee half/binary16 */
		1127	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1128	ecb_function_ ecb_const uint16_t
		1129	ecb_float_to_binary16 (float x)
		1130	{
		1131	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1132	}
723		1133
724	#endif	1134	/* convert an ieee half/binary16 to float */
		1135	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1136	ecb_function_ ecb_const float
		1137	ecb_binary16_to_float (uint16_t x)
		1138	{
		1139	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1140	}
725		1141
		1142	#endif
		1143
		1144	#endif
		1145

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Comparing libeio/ecb.h (file contents): Revision 1.18 by root, Sat Sep 7 23:18:23 2013 UTC vs. Revision 1.30 by root, Wed Feb 26 15:33:00 2020 UTC

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Comparing libeio/ecb.h (file contents):
Revision 1.18 by root, Sat Sep 7 23:18:23 2013 UTC vs.
Revision 1.30 by root, Wed Feb 26 15:33:00 2020 UTC