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

Comparing libecb/ecb.h (file contents):
Revision 1.42 by root, Sun Jun 12 08:14:03 2011 UTC vs.
Revision 1.95 by root, Tue May 29 21:06:01 2012 UTC

…		…
1	/*	1	/*
2	* libecb - http://software.schmorp.de/pkg/libecb	2	* libecb - http://software.schmorp.de/pkg/libecb
3	*	3	*
4	* Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>	4	* Copyright (©) 2009-2012 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:
28	*/	28	*/
29		29
30	#ifndef ECB_H	30	#ifndef ECB_H
31	#define ECB_H	31	#define ECB_H
32		32
		33	/* 16 bits major, 16 bits minor */
		34	#define ECB_VERSION 0x00010001
		35
		36	#ifdef _WIN32
		37	typedef signed char int8_t;
		38	typedef unsigned char uint8_t;
		39	typedef signed short int16_t;
		40	typedef unsigned short uint16_t;
		41	typedef signed int int32_t;
		42	typedef unsigned int uint32_t;
		43	#if __GNUC__
		44	typedef signed long long int64_t;
		45	typedef unsigned long long uint64_t;
		46	#else /* _MSC_VER \|\| __BORLANDC__ */
		47	typedef signed __int64 int64_t;
		48	typedef unsigned __int64 uint64_t;
		49	#endif
		50	#ifdef _WIN64
		51	#define ECB_PTRSIZE 8
		52	typedef uint64_t uintptr_t;
		53	typedef int64_t intptr_t;
		54	#else
		55	#define ECB_PTRSIZE 4
		56	typedef uint32_t uintptr_t;
		57	typedef int32_t intptr_t;
		58	#endif
		59	typedef intptr_t ptrdiff_t;
		60	#else
33	#include <inttypes.h>	61	#include <inttypes.h>
		62	#if UINTMAX_MAX > 0xffffffffU
		63	#define ECB_PTRSIZE 8
		64	#else
		65	#define ECB_PTRSIZE 4
		66	#endif
		67	#endif
34		68
35	/* many compilers define _GNUC_ to some versions but then only implement	69	/* many compilers define _GNUC_ to some versions but then only implement
36	* what their idiot authors think are the "more important" extensions,	70	* what their idiot authors think are the "more important" extensions,
37	* causing enourmous grief in return for some better fake benchmark numbers.	71	* causing enormous grief in return for some better fake benchmark numbers.
38	* or so.	72	* or so.
39	* we try to detect these and simply assume they are not gcc - if they have	73	* we try to detect these and simply assume they are not gcc - if they have
40	* an issue with that they should have done it right in the first place.	74	* an issue with that they should have done it right in the first place.
41	*/	75	*/
42	#ifndef ECB_GCC_VERSION	76	#ifndef ECB_GCC_VERSION
43	#if defined(__INTEL_COMPILER) \|\| defined(__SUNPRO_C) \|\| defined(__llvm__)	77	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__
44	#define ECB_GCC_VERSION(major,minor) 0	78	#define ECB_GCC_VERSION(major,minor) 0
45	#else	79	#else
46	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	80	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
47	#endif	81	#endif
48	#endif	82	#endif
49		83
		84	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
50	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	85	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
		86	#define ECB_C11 (__STDC_VERSION__ >= 201112L)
		87	#define ECB_CPP (__cplusplus+0)
		88	#define ECB_CPP98 (__cplusplus >= 199711L)
		89	#define ECB_CPP11 (__cplusplus >= 201103L)
		90
		91	/*****************************************************************************/
		92
		93	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		94	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		95
		96	#if ECB_NO_THREADS
		97	#define ECB_NO_SMP 1
		98	#endif
		99
		100	#if ECB_NO_SMP
		101	#define ECB_MEMORY_FENCE do { } while (0)
		102	#endif
		103
		104	#ifndef ECB_MEMORY_FENCE
		105	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
		106	#if __i386 \|\| __i386__
		107	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		108	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		109	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		110	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__
		111	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		112	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		113	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		114	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
		115	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		116	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
		117	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__
		118	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
		119	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
		120	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__
		121	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		122	#elif __sparc \|\| __sparc__
		123	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
		124	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
		125	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
		126	#elif defined __s390__ \|\| defined __s390x__
		127	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
		128	#elif defined __mips__
		129	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		130	#elif defined __alpha__
		131	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		132	#elif defined __hppa__
		133	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		134	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		135	#elif defined __ia64__
		136	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		137	#endif
		138	#endif
		139	#endif
		140
		141	#ifndef ECB_MEMORY_FENCE
		142	#if ECB_GCC_VERSION(4,7)
		143	/* see comment below about the C11 memory model. in short - avoid */
		144	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		145	#elif defined __clang && __has_feature (cxx_atomic)
		146	/* see above */
		147	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		148	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
		149	#define ECB_MEMORY_FENCE __sync_synchronize ()
		150	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		151	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		152	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		153	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		154	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		155	#elif defined _WIN32
		156	#include <WinNT.h>
		157	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		158	#elif __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
		159	#include <mbarrier.h>
		160	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
		161	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
		162	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
		163	#elif __xlC__
		164	#define ECB_MEMORY_FENCE __sync ()
		165	#endif
		166	#endif
		167
		168	#ifndef ECB_MEMORY_FENCE
		169	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		170	/* we assume that these memory fences work on all variables/all memory accesses, */
		171	/* not just C11 atomics and atomic accesses */
		172	#include <stdatomic.h>
		173	/* unfortunately, the C11 memory model seems to be very limited, and unable to express */
		174	/* simple barrier semantics. That means we need to take out thor's hammer. */
		175	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		176	#endif
		177	#endif
		178
		179	#ifndef ECB_MEMORY_FENCE
		180	#if !ECB_AVOID_PTHREADS
		181	/*
		182	* if you get undefined symbol references to pthread_mutex_lock,
		183	* or failure to find pthread.h, then you should implement
		184	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		185	* OR provide pthread.h and link against the posix thread library
		186	* of your system.
		187	*/
		188	#include <pthread.h>
		189	#define ECB_NEEDS_PTHREADS 1
		190	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		191
		192	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		193	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		194	#endif
		195	#endif
		196
		197	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
		198	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		199	#endif
		200
		201	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
		202	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		203	#endif
		204
		205	/*****************************************************************************/
51		206
52	#if __cplusplus	207	#if __cplusplus
53	#define ECB_INLINE static inline	208	#define ecb_inline static inline
54	#elif ECB_GCC_VERSION(2,5)	209	#elif ECB_GCC_VERSION(2,5)
55	#define ECB_INLINE static __inline__	210	#define ecb_inline static __inline__
56	#elif ECB_C99	211	#elif ECB_C99
57	#define ECB_INLINE static inline	212	#define ecb_inline static inline
58	#else	213	#else
59	#define ECB_INLINE static	214	#define ecb_inline static
60	#endif	215	#endif
61		216
62	#if ECB_GCC_VERSION(3,3)	217	#if ECB_GCC_VERSION(3,3)
63	#define ecb_restrict __restrict__	218	#define ecb_restrict __restrict__
64	#elif ECB_C99	219	#elif ECB_C99
…		…
72	#define ECB_CONCAT_(a, b) a ## b	227	#define ECB_CONCAT_(a, b) a ## b
73	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	228	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
74	#define ECB_STRINGIFY_(a) # a	229	#define ECB_STRINGIFY_(a) # a
75	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	230	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
76		231
77	#define ecb_function_ ECB_INLINE	232	#define ecb_function_ ecb_inline
78		233
79	#if ECB_GCC_VERSION(3,1)	234	#if ECB_GCC_VERSION(3,1)
80	#define ecb_attribute(attrlist) __attribute__(attrlist)	235	#define ecb_attribute(attrlist) __attribute__(attrlist)
81	#define ecb_is_constant(expr) __builtin_constant_p (expr)	236	#define ecb_is_constant(expr) __builtin_constant_p (expr)
82	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	237	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
…		…
94	#elif ECB_GCC_VERSION(3,0)	249	#elif ECB_GCC_VERSION(3,0)
95	#define ecb_decltype(x) __typeof(x)	250	#define ecb_decltype(x) __typeof(x)
96	#endif	251	#endif
97		252
98	#define ecb_noinline ecb_attribute ((__noinline__))	253	#define ecb_noinline ecb_attribute ((__noinline__))
99	#define ecb_noreturn ecb_attribute ((__noreturn__))
100	#define ecb_unused ecb_attribute ((__unused__))	254	#define ecb_unused ecb_attribute ((__unused__))
101	#define ecb_const ecb_attribute ((__const__))	255	#define ecb_const ecb_attribute ((__const__))
102	#define ecb_pure ecb_attribute ((__pure__))	256	#define ecb_pure ecb_attribute ((__pure__))
		257
		258	#if ECB_C11
		259	#define ecb_noreturn _Noreturn
		260	#else
		261	#define ecb_noreturn ecb_attribute ((__noreturn__))
		262	#endif
103		263
104	#if ECB_GCC_VERSION(4,3)	264	#if ECB_GCC_VERSION(4,3)
105	#define ecb_artificial ecb_attribute ((__artificial__))	265	#define ecb_artificial ecb_attribute ((__artificial__))
106	#define ecb_hot ecb_attribute ((__hot__))	266	#define ecb_hot ecb_attribute ((__hot__))
107	#define ecb_cold ecb_attribute ((__cold__))	267	#define ecb_cold ecb_attribute ((__cold__))
…		…
120	#define ecb_likely(expr) ecb_expect_true (expr)	280	#define ecb_likely(expr) ecb_expect_true (expr)
121	#define ecb_unlikely(expr) ecb_expect_false (expr)	281	#define ecb_unlikely(expr) ecb_expect_false (expr)
122		282
123	/* count trailing zero bits and count # of one bits */	283	/* count trailing zero bits and count # of one bits */
124	#if ECB_GCC_VERSION(3,4)	284	#if ECB_GCC_VERSION(3,4)
		285	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		286	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		287	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
125	#define ecb_ctz32(x) __builtin_ctz (x)	288	#define ecb_ctz32(x) __builtin_ctz (x)
		289	#define ecb_ctz64(x) __builtin_ctzll (x)
126	#define ecb_popcount32(x) __builtin_popcount (x)	290	#define ecb_popcount32(x) __builtin_popcount (x)
		291	/* no popcountll */
127	#else	292	#else
128	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	293	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
129	ecb_function_ int	294	ecb_function_ int
130	ecb_ctz32 (uint32_t x)	295	ecb_ctz32 (uint32_t x)
131	{	296	{
132	int r = 0;	297	int r = 0;
133		298
134	x &= -x; /* this isolates the lowest bit */	299	x &= ~x + 1; /* this isolates the lowest bit */
135		300
		301	#if ECB_branchless_on_i386
		302	r += !!(x & 0xaaaaaaaa) << 0;
		303	r += !!(x & 0xcccccccc) << 1;
		304	r += !!(x & 0xf0f0f0f0) << 2;
		305	r += !!(x & 0xff00ff00) << 3;
		306	r += !!(x & 0xffff0000) << 4;
		307	#else
136	if (x & 0xaaaaaaaa) r += 1;	308	if (x & 0xaaaaaaaa) r += 1;
137	if (x & 0xcccccccc) r += 2;	309	if (x & 0xcccccccc) r += 2;
138	if (x & 0xf0f0f0f0) r += 4;	310	if (x & 0xf0f0f0f0) r += 4;
139	if (x & 0xff00ff00) r += 8;	311	if (x & 0xff00ff00) r += 8;
140	if (x & 0xffff0000) r += 16;	312	if (x & 0xffff0000) r += 16;
		313	#endif
141		314
142	return r;	315	return r;
		316	}
		317
		318	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
		319	ecb_function_ int
		320	ecb_ctz64 (uint64_t x)
		321	{
		322	int shift = x & 0xffffffffU ? 0 : 32;
		323	return ecb_ctz32 (x >> shift) + shift;
143	}	324	}
144		325
145	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	326	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
146	ecb_function_ int	327	ecb_function_ int
147	ecb_popcount32 (uint32_t x)	328	ecb_popcount32 (uint32_t x)
…		…
151	x = ((x >> 4) + x) & 0x0f0f0f0f;	332	x = ((x >> 4) + x) & 0x0f0f0f0f;
152	x *= 0x01010101;	333	x *= 0x01010101;
153		334
154	return x >> 24;	335	return x >> 24;
155	}	336	}
		337
		338	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
		339	ecb_function_ int ecb_ld32 (uint32_t x)
		340	{
		341	int r = 0;
		342
		343	if (x >> 16) { x >>= 16; r += 16; }
		344	if (x >> 8) { x >>= 8; r += 8; }
		345	if (x >> 4) { x >>= 4; r += 4; }
		346	if (x >> 2) { x >>= 2; r += 2; }
		347	if (x >> 1) { r += 1; }
		348
		349	return r;
		350	}
		351
		352	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
		353	ecb_function_ int ecb_ld64 (uint64_t x)
		354	{
		355	int r = 0;
		356
		357	if (x >> 32) { x >>= 32; r += 32; }
		358
		359	return r + ecb_ld32 (x);
		360	}
156	#endif	361	#endif
		362
		363	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
		364	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		365	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
		366	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		367
		368	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
		369	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
		370	{
		371	return ( (x * 0x0802U & 0x22110U)
		372	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
		373	}
		374
		375	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
		376	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
		377	{
		378	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
		379	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
		380	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
		381	x = ( x >> 8 ) \| ( x << 8);
		382
		383	return x;
		384	}
		385
		386	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
		387	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
		388	{
		389	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
		390	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
		391	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
		392	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
		393	x = ( x >> 16 ) \| ( x << 16);
		394
		395	return x;
		396	}
		397
		398	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		399	/* so for this version we are lazy */
		400	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
		401	ecb_function_ int
		402	ecb_popcount64 (uint64_t x)
		403	{
		404	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		405	}
		406
		407	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
		408	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
		409	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
		410	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
		411	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
		412	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
		413	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
		414	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
		415
		416	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
		417	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
		418	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
		419	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
		420	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
		421	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
		422	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
		423	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
157		424
158	#if ECB_GCC_VERSION(4,3)	425	#if ECB_GCC_VERSION(4,3)
159	#define ecb_bswap32(x) __builtin_bswap32 (x)
160	#define ecb_bswap16(x) (__builtin_bswap32(x) >> 16)	426	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		427	#define ecb_bswap32(x) __builtin_bswap32 (x)
		428	#define ecb_bswap64(x) __builtin_bswap64 (x)
161	#else	429	#else
		430	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
		431	ecb_function_ uint16_t
		432	ecb_bswap16 (uint16_t x)
		433	{
		434	return ecb_rotl16 (x, 8);
		435	}
		436
162	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	437	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
163	ecb_function_ uint32_t	438	ecb_function_ uint32_t
164	ecb_bswap32 (uint32_t x)	439	ecb_bswap32 (uint32_t x)
165	{	440	{
166	return (x >> 24)	441	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
167	\| ((x >> 8) & 0x0000ff00)
168	\| ((x << 8) & 0x00ff0000)
169	\| (x << 24);
170	}	442	}
171		443
172	ecb_function_ uint32_t ecb_bswap16 (uint32_t x) ecb_const;	444	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
173	ecb_function_ uint32_t	445	ecb_function_ uint64_t
174	ecb_bswap16 (uint32_t x)	446	ecb_bswap64 (uint64_t x)
175	{	447	{
176	return ((x >> 8) & 0xff)	448	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
177	\| ((x << 8) & 0x00ff0000)
178	\| (x << 24);
179	}	449	}
180	#endif	450	#endif
181		451
182	#if ECB_GCC_VERSION(4,5)	452	#if ECB_GCC_VERSION(4,5)
183	#define ecb_unreachable() __builtin_unreachable ()	453	#define ecb_unreachable() __builtin_unreachable ()
184	#else	454	#else
185	/* this seems to work fine, but gcc always emits a warning for it :/ */	455	/* this seems to work fine, but gcc always emits a warning for it :/ */
186	ecb_function_ void ecb_unreachable (void) ecb_noreturn;	456	ecb_inline void ecb_unreachable (void) ecb_noreturn;
187	ecb_function_ void ecb_unreachable (void) { }	457	ecb_inline void ecb_unreachable (void) { }
188	#endif	458	#endif
189		459
190	/* try to tell the compiler that some condition is definitely true */	460	/* try to tell the compiler that some condition is definitely true */
191	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)	461	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
192		462
193	ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;	463	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
194	ecb_function_ unsigned char	464	ecb_inline unsigned char
195	ecb_byteorder_helper (void)	465	ecb_byteorder_helper (void)
196	{	466	{
197	const uint32_t u = 0x11223344;	467	const uint32_t u = 0x11223344;
198	return (unsigned char )&u;	468	return (unsigned char )&u;
199	}	469	}
200		470
201	ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;	471	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
202	ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	472	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
203	ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;	473	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
204	ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	474	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
205		475
206	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	476	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
207	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	477	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
208	#else	478	#else
209	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	479	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		480	#endif
		481
		482	#if __cplusplus
		483	template<typename T>
		484	static inline T ecb_div_rd (T val, T div)
		485	{
		486	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
		487	}
		488	template<typename T>
		489	static inline T ecb_div_ru (T val, T div)
		490	{
		491	return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
		492	}
		493	#else
		494	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
		495	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
210	#endif	496	#endif
211		497
212	#if ecb_cplusplus_does_not_suck	498	#if ecb_cplusplus_does_not_suck
213	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */	499	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
214	template<typename T, int N>	500	template<typename T, int N>
…		…
218	}	504	}
219	#else	505	#else
220	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	506	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
221	#endif	507	#endif
222		508
223	ECB_INLINE uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
224	ECB_INLINE uint32_t
225	ecb_rotr32 (uint32_t x, unsigned int count)
226	{
227	return (x << (32 - count)) \| (x >> count);
228	}
229
230	ECB_INLINE uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
231	ECB_INLINE uint32_t
232	ecb_rotl32 (uint32_t x, unsigned int count)
233	{
234	return (x >> (32 - count)) \| (x << count);
235	}
236
237	#endif	509	#endif
238		510

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Comparing libecb/ecb.h (file contents): Revision 1.42 by root, Sun Jun 12 08:14:03 2011 UTC vs. Revision 1.95 by root, Tue May 29 21:06:01 2012 UTC

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Comparing libecb/ecb.h (file contents):
Revision 1.42 by root, Sun Jun 12 08:14:03 2011 UTC vs.
Revision 1.95 by root, Tue May 29 21:06:01 2012 UTC