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

Comparing libecb/ecb.h (file contents):
Revision 1.17 by root, Thu May 26 18:36:00 2011 UTC vs.
Revision 1.62 by root, Thu Aug 4 14:34:00 2011 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	4	* Copyright (©) 2009-2011 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	#ifdef _WIN32
		34	typedef signed char int8_t;
		35	typedef unsigned char uint8_t;
		36	typedef signed short int16_t;
		37	typedef unsigned short uint16_t;
		38	typedef signed int int32_t;
		39	typedef unsigned int uint32_t;
		40	#if __GNUC__
		41	typedef signed long long int64_t;
		42	typedef unsigned long long uint64_t;
		43	#else /* _MSC_VER \|\| __BORLANDC__ */
		44	typedef signed __int64 int64_t;
		45	typedef unsigned __int64 uint64_t;
		46	#endif
		47	#else
33	#include <inttypes.h>	48	#include <inttypes.h>
		49	#endif
34		50
35	/* many compilers define _GNUC_ to some versions but then only implement	51	/* many compilers define _GNUC_ to some versions but then only implement
36	* what their idiot authors think are the "more important" extensions,	52	* what their idiot authors think are the "more important" extensions,
37	* causing enourmous grief for some better fake benchmark numbers or so.	53	* causing enormous grief in return for some better fake benchmark numbers.
		54	* or so.
38	* we try to detect these and simply assume they are not gcc - if they have	55	* we try to detect these and simply assume they are not gcc - if they have
39	* an issue with that they should have done it right in the first place.	56	* an issue with that they should have done it right in the first place.
40	*/	57	*/
41	#ifndef ECB_GCC_VERSION	58	#ifndef ECB_GCC_VERSION
42	# if defined(__INTEL_COMPILER) \|\| defined(__SUNPRO_C) \|\| defined(__llvm__)	59	#if !defined(__GNUC_MINOR__) \|\| defined(__INTEL_COMPILER) \|\| defined(__SUNPRO_C) \|\| defined(__SUNPRO_CC) \|\| defined(__llvm__) \|\| defined(__clang__)
43	# define ECB_GCC_VERSION(major,minor) 0	60	#define ECB_GCC_VERSION(major,minor) 0
44	# else	61	#else
45	# define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	62	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		63	#endif
46	# endif	64	#endif
		65
		66	/*****************************************************************************/
		67
		68	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		69	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		70
		71	#if ECB_NO_THREADS \|\| ECB_NO_SMP
		72	#define ECB_MEMORY_FENCE do { } while (0)
		73	#define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
		74	#define ECB_MEMORY_FENCE_RELEASE do { } while (0)
		75	#endif
		76
		77	#ifndef ECB_MEMORY_FENCE
		78	#if ECB_GCC_VERSION(2,5)
		79	#if __x86
		80	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		81	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
		82	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
		83	#elif __amd64
		84	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		85	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
		86	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
		87	#elif defined(__ARM_ARCH_6__ ) \|\| defined(__ARM_ARCH_6J__ ) \
		88	\|\| defined(__ARM_ARCH_6K__) \|\| defined(__ARM_ARCH_6ZK__) \
		89	\|\| defined(__ARM_ARCH_7__ ) \|\| defined(__ARM_ARCH_7A__ ) \
		90	\|\| defined(__ARM_ARCH_7M__) \|\| defined(__ARM_ARCH_7R__ )
		91	#define ECB_MEMORY_FENCE \
		92	do { \
		93	int null = 0; \
		94	__asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \
		95	while (0)
		96	#endif
47	#endif	97	#endif
		98	#endif
48		99
		100	#ifndef ECB_MEMORY_FENCE
		101	#if ECB_GCC_VERSION(4,4) \|\| defined(__INTEL_COMPILER)
		102	#define ECB_MEMORY_FENCE __sync_synchronize ()
		103	/#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) /
		104	/#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) /
		105	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		106	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		107	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		108	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		109	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		110	#elif defined(_WIN32)
		111	#include <WinNT.h>
		112	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		113	#endif
		114	#endif
		115
		116	#ifndef ECB_MEMORY_FENCE
		117	#if !ECB_AVOID_PTHREADS
		118	/*
		119	* if you get undefined symbol references to pthread_mutex_lock,
		120	* or failure to find pthread.h, then you should implement
		121	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		122	* OR provide pthread.h and link against the posix thread library
		123	* of your system.
		124	*/
		125	#include <pthread.h>
		126	#define ECB_NEEDS_PTHREADS 1
		127	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		128
		129	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		130	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		131	#endif
		132	#endif
		133
		134	#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
		135	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		136	#endif
		137
		138	#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
		139	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		140	#endif
		141
		142	/*****************************************************************************/
		143
		144	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
		145
49	#ifndef __cplusplus	146	#if __cplusplus
50	# if __STDC_VERSION__ >= 199901L	147	#define ecb_inline static inline
51	# define ECB_INLINE inline	148	#elif ECB_GCC_VERSION(2,5)
52	typedef _Bool ecb_bool;	149	#define ecb_inline static __inline__
		150	#elif ECB_C99
		151	#define ecb_inline static inline
53	# else	152	#else
54	# define ECB_INLINE inline /* yeah! */	153	#define ecb_inline static
		154	#endif
		155
		156	#if ECB_GCC_VERSION(3,3)
		157	#define ecb_restrict __restrict__
		158	#elif ECB_C99
		159	#define ecb_restrict restrict
		160	#else
		161	#define ecb_restrict
		162	#endif
		163
55	typedef int ecb_bool;	164	typedef int ecb_bool;
56	# endif
57	#endif
58		165
59	#define ECB_CONCAT_(a, b) a ## b	166	#define ECB_CONCAT_(a, b) a ## b
60	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	167	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
61	#define ECB_STRINGIFY_(a) # a	168	#define ECB_STRINGIFY_(a) # a
62	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	169	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
63		170
64	#define ECB_HEADER_INLINE static ECB_INLINE	171	#define ecb_function_ ecb_inline
65		172
66	#if ECB_GCC_VERSION(3,1)	173	#if ECB_GCC_VERSION(3,1)
67	# define ecb_attribute(attrlist) __attribute__(attrlist)	174	#define ecb_attribute(attrlist) __attribute__(attrlist)
68	# define ecb_is_constant(c) __builtin_constant_p (c)	175	#define ecb_is_constant(expr) __builtin_constant_p (expr)
69	# define ecb_expect(expr,value) __builtin_expect ((expr),(value))	176	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
70	# define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	177	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
71	#else	178	#else
72	# define ecb_attribute(attrlist)	179	#define ecb_attribute(attrlist)
73	# define ecb_is_constant(c) 0	180	#define ecb_is_constant(expr) 0
74	# define ecb_expect(expr,value) (expr)	181	#define ecb_expect(expr,value) (expr)
75	# define ecb_prefetch(addr,rw,locality)	182	#define ecb_prefetch(addr,rw,locality)
76	#endif	183	#endif
77		184
78	/* no emulation for ecb_decltype */	185	/* no emulation for ecb_decltype */
79	#if ECB_GCC_VERSION(4,5)	186	#if ECB_GCC_VERSION(4,5)
80	# define ecb_decltype(x) __decltype(x)	187	#define ecb_decltype(x) __decltype(x)
81	#elif ECB_GCC_VERSION(3,0)	188	#elif ECB_GCC_VERSION(3,0)
82	# define ecb_decltype(x) typeof(x)	189	#define ecb_decltype(x) __typeof(x)
83	#endif	190	#endif
84		191
85	#define ecb_noinline ecb_attribute ((noinline))	192	#define ecb_noinline ecb_attribute ((__noinline__))
86	#define ecb_noreturn ecb_attribute ((noreturn))	193	#define ecb_noreturn ecb_attribute ((__noreturn__))
87	#define ecb_unused ecb_attribute ((unused))	194	#define ecb_unused ecb_attribute ((__unused__))
88	#define ecb_const ecb_attribute ((const))	195	#define ecb_const ecb_attribute ((__const__))
89	#define ecb_pure ecb_attribute ((pure))	196	#define ecb_pure ecb_attribute ((__pure__))
		197
		198	#if ECB_GCC_VERSION(4,3)
		199	#define ecb_artificial ecb_attribute ((__artificial__))
90	#define ecb_hot ecb_attribute ((hot)) /* 4.3 */	200	#define ecb_hot ecb_attribute ((__hot__))
91	#define ecb_cold ecb_attribute ((cold)) /* 4.3 */	201	#define ecb_cold ecb_attribute ((__cold__))
		202	#else
		203	#define ecb_artificial
		204	#define ecb_hot
		205	#define ecb_cold
		206	#endif
92		207
93	/* put into ifs if you are very sure that the expression */	208	/* put around conditional expressions if you are very sure that the */
94	/* is mostly true or mosty false. note that these return */	209	/* expression is mostly true or mostly false. note that these return */
95	/* booleans, not the expression. */	210	/* booleans, not the expression. */
96	#define ecb_unlikely(expr) ecb_expect (!!(expr), 0)	211	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
		212	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		213	/* for compatibility to the rest of the world */
97	#define ecb_likely(expr) ecb_expect (!!(expr), 1)	214	#define ecb_likely(expr) ecb_expect_true (expr)
98		215	#define ecb_unlikely(expr) ecb_expect_false (expr)
99	/* try to tell the compiler that some condition is definitely true */
100	#define ecb_assume(cond) do { if (!(cond)) unreachable (); } while (0)
101		216
102	/* count trailing zero bits and count # of one bits */	217	/* count trailing zero bits and count # of one bits */
103	#if ECB_GCC_VERSION(3,4)	218	#if ECB_GCC_VERSION(3,4)
		219	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		220	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		221	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
104	#define ecb_ctz32 (x) __builtin_ctz (x)	222	#define ecb_ctz32(x) __builtin_ctz (x)
		223	#define ecb_ctz64(x) __builtin_ctzll (x)
105	#define ecb_popcount32 (x) __builtin_popcount (x)	224	#define ecb_popcount32(x) __builtin_popcount (x)
		225	/* no popcountll */
106	#else	226	#else
107	ECB_HEADER_INLINE int ecb_ctz32 (uint32_t x) ecb_const;	227	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
108	ECB_HEADER_INLINE	228	ecb_function_ int
109	ecb_ctz32 (uint32_t x)	229	ecb_ctz32 (uint32_t x)
		230	{
		231	int r = 0;
		232
		233	x &= ~x + 1; /* this isolates the lowest bit */
		234
		235	#if ECB_branchless_on_i386
		236	r += !!(x & 0xaaaaaaaa) << 0;
		237	r += !!(x & 0xcccccccc) << 1;
		238	r += !!(x & 0xf0f0f0f0) << 2;
		239	r += !!(x & 0xff00ff00) << 3;
		240	r += !!(x & 0xffff0000) << 4;
		241	#else
		242	if (x & 0xaaaaaaaa) r += 1;
		243	if (x & 0xcccccccc) r += 2;
		244	if (x & 0xf0f0f0f0) r += 4;
		245	if (x & 0xff00ff00) r += 8;
		246	if (x & 0xffff0000) r += 16;
		247	#endif
		248
		249	return r;
		250	}
		251
		252	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
		253	ecb_function_ int
		254	ecb_ctz64 (uint64_t x)
		255	{
		256	int shift = x & 0xffffffffU ? 0 : 32;
		257	return ecb_ctz32 (x >> shift) + shift;
		258	}
		259
		260	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
		261	ecb_function_ int
		262	ecb_popcount32 (uint32_t x)
		263	{
		264	x -= (x >> 1) & 0x55555555;
		265	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		266	x = ((x >> 4) + x) & 0x0f0f0f0f;
		267	x *= 0x01010101;
		268
		269	return x >> 24;
		270	}
		271
		272	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
		273	ecb_function_ int ecb_ld32 (uint32_t x)
		274	{
		275	int r = 0;
		276
		277	if (x >> 16) { x >>= 16; r += 16; }
		278	if (x >> 8) { x >>= 8; r += 8; }
		279	if (x >> 4) { x >>= 4; r += 4; }
		280	if (x >> 2) { x >>= 2; r += 2; }
		281	if (x >> 1) { r += 1; }
		282
		283	return r;
		284	}
		285
		286	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
		287	ecb_function_ int ecb_ld64 (uint64_t x)
		288	{
		289	int r = 0;
		290
		291	if (x >> 32) { x >>= 32; r += 32; }
		292
		293	return r + ecb_ld32 (x);
		294	}
		295	#endif
		296
		297	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		298	/* so for this version we are lazy */
		299	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
		300	ecb_function_ int
		301	ecb_popcount64 (uint64_t x)
110	{	302	{
111	int r = 0;	303	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
112
113	x &= -x; /* this isolates the lowest bit */
114
115	if (x & 0xaaaaaaaa) r += 1;
116	if (x & 0xcccccccc) r += 2;
117	if (x & 0xf0f0f0f0) r += 4;
118	if (x & 0xff00ff00) r += 8;
119	if (x & 0xffff0000) r += 16;
120
121	return r;
122	}	304	}
123		305
124	ECB_HEADER_INLINE int ecb_popcount32 (uint32_t x) ecb_const;	306	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
125	ECB_HEADER_INLINE	307	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
126	ecb_popcount32 (uint32_t x)	308	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
127	{	309	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
128	x -= (x >> 1) & 0x55555555;	310	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
129	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	311	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
130	x = ((x >> 4) + x) & 0x0f0f0f0f;	312	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
131	x *= 0x01010101;	313	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
132		314
133	return x >> 24;	315	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
134	}	316	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
135	#endif	317	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
		318	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
		319	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
		320	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
		321	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
		322	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
136		323
137	#if ECB_GCC_VERSION(4,3)	324	#if ECB_GCC_VERSION(4,3)
		325	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
138	# define ecb_bswap32(x) __builtin_bswap32 (x)	326	#define ecb_bswap32(x) __builtin_bswap32 (x)
		327	#define ecb_bswap64(x) __builtin_bswap64 (x)
139	#else	328	#else
		329	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
		330	ecb_function_ uint16_t
		331	ecb_bswap16 (uint16_t x)
		332	{
		333	return ecb_rotl16 (x, 8);
		334	}
		335
140	ECB_HEADER_INLINE uint32_t ecb_bswap32 (uint32_t x) ecb_const;	336	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
141	ECB_HEADER_INLINE uint32_t	337	ecb_function_ uint32_t
142	ecb_bswap32 (uint32_t x)	338	ecb_bswap32 (uint32_t x)
143	{	339	{
144	return (x >> 24)	340	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
145	\| ((x >> 8) & 0x0000ff00)	341	}
146	\| ((x << 8) & 0x00ff0000)	342
147	\| (x << 24);	343	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
148	}	344	ecb_function_ uint64_t
		345	ecb_bswap64 (uint64_t x)
		346	{
		347	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
		348	}
149	#endif	349	#endif
150		350
151	#if ECB_GCC_VERSION(4,5)	351	#if ECB_GCC_VERSION(4,5)
152	# define ecb_unreachable() __builtin_unreachable ()	352	#define ecb_unreachable() __builtin_unreachable ()
153	#else	353	#else
154	/* this seems to work fine, but gcc always emits a warning for it :/ */	354	/* this seems to work fine, but gcc always emits a warning for it :/ */
155	ECB_HEADER_INLINE void ecb_unreachable (void) ecb_noreturn;	355	ecb_function_ void ecb_unreachable (void) ecb_noreturn;
156	ECB_HEADER_INLINE void ecb_unreachable (void) { }	356	ecb_function_ void ecb_unreachable (void) { }
157	#endif	357	#endif
158		358
		359	/* try to tell the compiler that some condition is definitely true */
		360	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
		361
159	ECB_HEADER_INLINE unsigned char ecb_byteorder_helper () ecb_const;	362	ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
160	ECB_HEADER_INLINE unsigned char	363	ecb_function_ unsigned char
161	ecb_byteorder_helper ()	364	ecb_byteorder_helper (void)
162	{	365	{
163	const uint32_t u = 0x11223344;	366	const uint32_t u = 0x11223344;
164	return (unsigned char )&u;	367	return (unsigned char )&u;
165	}	368	}
166		369
167	ECB_HEADER_INLINE ecb_bool ecb_big_endian () ecb_const;	370	ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
168	ECB_HEADER_INLINE ecb_bool ecb_big_endian () { return ecb_byteorder_helper () == 0x11; };	371	ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
169	ECB_HEADER_INLINE ecb_bool ecb_little_endian () ecb_const;	372	ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
170	ECB_HEADER_INLINE ecb_bool ecb_little_endian () { return ecb_byteorder_helper () == 0x44; };	373	ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
		374
		375	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
		376	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		377	#else
		378	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		379	#endif
171		380
172	#if ecb_cplusplus_does_not_suck	381	#if ecb_cplusplus_does_not_suck
173	// does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm)	382	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
174	template<typename T, int N>	383	template<typename T, int N>
175	static inline int ecb_array_length (const T (&arr)[N])	384	static inline int ecb_array_length (const T (&arr)[N])
176	{	385	{
177	return N;	386	return N;
178	}	387	}
179	#else	388	#else
180	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	389	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
181	#endif	390	#endif
182		391
183	ECB_INLINE uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
184	ECB_INLINE uint32_t
185	ecb_rotr32 (uint32_t x, unsigned int count)
186	{
187	return (x << (32 - count)) \| (x >> count);
188	}
189
190	ECB_INLINE uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
191	ECB_INLINE uint32_t
192	ecb_rotl32 (uint32_t x, unsigned int count)
193	{
194	return (x >> (32 - count)) \| (x << count);
195	}
196
197	#endif	392	#endif
198		393

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libecb/ecb.h (file contents): Revision 1.17 by root, Thu May 26 18:36:00 2011 UTC vs. Revision 1.62 by root, Thu Aug 4 14:34:00 2011 UTC

Diff Legend

Comparing libecb/ecb.h (file contents):
Revision 1.17 by root, Thu May 26 18:36:00 2011 UTC vs.
Revision 1.62 by root, Thu Aug 4 14:34:00 2011 UTC