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Revision: 1.34
Committed: Mon Jun 21 21:26:48 2021 UTC (2 years, 11 months ago) by root
Branch: MAIN
Changes since 1.33: +3 -0 lines
Log Message:
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File Contents

# Content
1 0x00010009
2 - added ECB_64BIT_NATIVE.
3
4 TODO:
5 08:30:06 <b_jonas> I think it could be worth to add a macro that works like alignof or _Alignof on sane
6 compilers, and like __alignof on MS compilers that support it, see
7 http://msdn.microsoft.com/en-us/library/45t0s5f4.aspx
8 08:30:24 <b_jonas> even if you can't support it on all the old compilers
9 08:31:17 <b_jonas> I'd also like a macro for alignas, but sadly, that seems impossible in general, because
10 the MS compiler only has some half-attempt to do something similar but with different and
11 more broken semantics, see http://msdn.microsoft.com/en-us/library/83ythb65.aspx
12 08:31:35 <b_jonas> but I wonder if some special case could still be worth to support
13 08:32:23 <b_jonas> probably not, because it would just account to making a union with a highly aligned type,
14 which is something I can do on any compiler portably
15
16 TODO: #define ECB_IS_INTEGRAL(x) !((1 ? 1 : (x)) / 2)
17 #define ECB_IS_INTEGRAL(x) (sizeof ((x) + 1.0f) != sizeof((x) + 1ULL))
18
19 TODO: ecb_minpot, either using bit tricks or ecb_ldXX
20
21 TODO: __builtin_popcountll exists...
22
23 TODO: __builtin_powi
24
25 TODO: https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/
26
27 implement is_constant for c11: https://gustedt.wordpress.com/2013/08/22/testing-compile-time-constness-and-null-pointers-with-c11s-_generic/
28
29 #ifdef _MSC_VER
30
31 #include <stdlib.h>
32 #define bswap_32(x) _byteswap_ulong(x)
33 #define bswap_64(x) _byteswap_uint64(x)
34
35 #elif defined(__APPLE__)
36
37 // Mac OS X / Darwin features
38 #include <libkern/OSByteOrder.h>
39 #define bswap_32(x) OSSwapInt32(x)
40 #define bswap_64(x) OSSwapInt64(x)
41
42 #elif defined(__sun) || defined(sun)
43
44 #include <sys/byteorder.h>
45 #define bswap_32(x) BSWAP_32(x)
46 #define bswap_64(x) BSWAP_64(x)
47
48 #elif defined(__FreeBSD__)
49
50 #include <sys/endian.h>
51 #define bswap_32(x) bswap32(x)
52 #define bswap_64(x) bswap64(x)
53
54 #elif defined(__OpenBSD__)
55
56 #include <sys/types.h>
57 #define bswap_32(x) swap32(x)
58 #define bswap_64(x) swap64(x)
59
60 #elif defined(__NetBSD__)
61
62 #include <sys/types.h>
63 #include <machine/bswap.h>
64 #if defined(__BSWAP_RENAME) && !defined(__bswap_32)
65 #define bswap_32(x) bswap32(x)
66 #define bswap_64(x) bswap64(x)
67 #endif
68
69 #else
70
71 #include <byteswap.h>
72
73 #endif
74
75 TODO: generic poprcount etc., also fast_t for them?
76
77 - try to use inttypes.h on mingw.
78
79 0x00010008
80 - aligned/unaligned load/store, bswap, host order
81 conversion.
82 - generic C++ ecb_rot[lr], ecb_popcount, ecb_ctz,
83 ecb_is_pot32 and ecb_bitrev functions.
84
85 0x00010007
86 - new ECB_OPTIMIZE_SIZE symbol.
87
88 0x00010006
89 - new ECB_MEMORY_FENCE_RELAXED memory fence.
90 - use acquire/eelease memory barriers on sun workshop pro, not read/write.
91 - rely on c++ compiler barriers to do the right thing in gcc/clang.
92 - change release memory fence to memory barrier on ia32/ia64.
93 - apply ctz/ld patch for msc by Zsbán Ambrus.
94 - ECB_PTRSIZE erroneously was 8 on most 32bit systems (
95 found by Zsbán Ambrus).
96 - improved compiletime detection of endianness, also, allow
97 runtime detection to indicate other-than-big/little endianness.
98 - no memory barrier neded on arm < 6.
99
100 0x00010005
101 - improve ecb_binary16_to_float.
102 - add ecb_float_to_binary16.
103 - add ecb_binary16_to_binary32 and ecb_binary32_to_binary16 pair.
104
105 0x00010001
106 - add ecb_is_pot32/64.
107 - add intptr_t/uintptr_t.
108 - add ECB_PTRSIZE.
109 - more macros for C/C++ version checks.
110 - support C11 atomics for memory fences.
111 - support gcc-4.7 atomics for memory fences.
112 - support m68k, m88k and sh (patch by Miod Vallat).
113 - add ecb_binary16_to_float.
114
115 TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt
116 TODO: ffs
117 64 bit variants of everything
118 TODO: examples from X for clz/ctz
119 TODO: arithmetic right shift
120 TODO: template/generic functions for x32/x64 and so on
121 TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0)
122 TODO: generalised shift
123 TODO: #define ECB_FAST_UNALIGNED_ACCESS
124 unsigned long gensh(unsigned long v, int x) {
125 int a, b;
126 a = (v << x) & -(((unsigned int)x) < 32);
127 x = -x;
128 b = (v >> x) & -(((unsigned int)x) < 32);
129 return a|b;
130 }
131
132 TODO: export(=dllexport) & hidden
133 TODO: flatten
134 TODO: warning(msg)
135 TODO: error(msg)
136 TODO: leaf (uh), noclone (hmmm)
137 TODO: nonnull, returns_nonnull
138 TODO: nothrow
139 TODO: used
140 TODO: trap
141 TODO: http://llvm.org/docs/doxygen/html/Compiler_8h_source.html
142
143 TODO: read/write unaligned macros
144 TODO: htonl and friends
145 TODO: macro to convert from unsigned to signed "the natural way"
146 TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration
147 TODO: alignof
148
149