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Comparing CBOR-XS/ecb.h (file contents):
Revision 1.1 by root, Fri Oct 25 23:09:45 2013 UTC vs.
Revision 1.7 by root, Mon Jan 6 04:08:46 2014 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 (©) 2009-2013 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:
… …
64 #define ECB_PTRSIZE 4 64 #define ECB_PTRSIZE 4
65 #endif 65 #endif
66#endif 66#endif
67 67
68/* work around x32 idiocy by defining proper macros */ 68/* work around x32 idiocy by defining proper macros */
69#if __x86_64 || _M_AMD64 69#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
70 #if _ILP32 70 #if _ILP32
71 #define ECB_AMD64_X32 1 71 #define ECB_AMD64_X32 1
72 #else 72 #else
73 #define ECB_AMD64 1 73 #define ECB_AMD64 1
74 #endif 74 #endif
… …
87 #else 87 #else
88 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 88 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
89 #endif 89 #endif
90#endif 90#endif
91 91
92#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
93#define ECB_C99 (__STDC_VERSION__ >= 199901L)
94#define ECB_C11 (__STDC_VERSION__ >= 201112L)
95#define ECB_CPP (__cplusplus+0) 92#define ECB_CPP (__cplusplus+0)
96#define ECB_CPP11 (__cplusplus >= 201103L) 93#define ECB_CPP11 (__cplusplus >= 201103L)
94
95#if ECB_CPP
96 #define ECB_C 0
97 #define ECB_STDC_VERSION 0
98#else
99 #define ECB_C 1
100 #define ECB_STDC_VERSION __STDC_VERSION__
101#endif
102
103#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
104#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
97 105
98#if ECB_CPP 106#if ECB_CPP
99 #define ECB_EXTERN_C extern "C" 107 #define ECB_EXTERN_C extern "C"
100 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 108 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
101 #define ECB_EXTERN_C_END } 109 #define ECB_EXTERN_C_END }
… …
134 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 142 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
135 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 143 #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__ \ 144 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
137 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 145 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
138 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 146 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
139 #elif __sparc || __sparc__ 147 #elif (__sparc || __sparc__) && !__sparcv8
140 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 148 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
141 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 149 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
142 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 150 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
143 #elif defined __s390__ || defined __s390x__ 151 #elif defined __s390__ || defined __s390x__
144 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 152 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
177 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 185 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
178 */ 186 */
179 187
180 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 188 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
181 #define ECB_MEMORY_FENCE __sync_synchronize () 189 #define ECB_MEMORY_FENCE __sync_synchronize ()
190 #elif _MSC_VER >= 1500 /* VC++ 2008 */
191 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
192 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
193 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
194 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
195 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
182 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 196 #elif _MSC_VER >= 1400 /* VC++ 2005 */
183 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 197 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
184 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 198 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
185 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 199 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
186 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 200 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
272 #define ecb_is_constant(expr) __builtin_constant_p (expr) 286 #define ecb_is_constant(expr) __builtin_constant_p (expr)
273 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 287 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
274 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 288 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
275#else 289#else
276 #define ecb_attribute(attrlist) 290 #define ecb_attribute(attrlist)
291
292 /* possible C11 impl for integral types
293 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
294 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
295
277 #define ecb_is_constant(expr) 0 296 #define ecb_is_constant(expr) 0
278 #define ecb_expect(expr,value) (expr) 297 #define ecb_expect(expr,value) (expr)
279 #define ecb_prefetch(addr,rw,locality) 298 #define ecb_prefetch(addr,rw,locality)
280#endif 299#endif
281 300
… …
581 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 600 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
582 #define ECB_STDFP 1 601 #define ECB_STDFP 1
583 #include <string.h> /* for memcpy */ 602 #include <string.h> /* for memcpy */
584#else 603#else
585 #define ECB_STDFP 0 604 #define ECB_STDFP 0
586 #include <math.h> /* for frexp*, ldexp* */
587#endif 605#endif
588 606
589#ifndef ECB_NO_LIBM 607#ifndef ECB_NO_LIBM
608
609 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
610
611 /* only the oldest of old doesn't have this one. solaris. */
612 #ifdef INFINITY
613 #define ECB_INFINITY INFINITY
614 #else
615 #define ECB_INFINITY HUGE_VAL
616 #endif
617
618 #ifdef NAN
619 #define ECB_NAN NAN
620 #else
621 #define ECB_NAN ECB_INFINITY
622 #endif
623
624 /* converts an ieee half/binary16 to a float */
625 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
626 ecb_function_ float
627 ecb_binary16_to_float (uint16_t x)
628 {
629 int e = (x >> 10) & 0x1f;
630 int m = x & 0x3ff;
631 float r;
632
633 if (!e ) r = ldexpf (m , -24);
634 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
635 else if (m ) r = ECB_NAN;
636 else r = ECB_INFINITY;
637
638 return x & 0x8000 ? -r : r;
639 }
590 640
591 /* convert a float to ieee single/binary32 */ 641 /* convert a float to ieee single/binary32 */
592 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 642 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
593 ecb_function_ uint32_t 643 ecb_function_ uint32_t
594 ecb_float_to_binary32 (float x) 644 ecb_float_to_binary32 (float x)

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