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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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# User Rev Content
1 root 1.34 0x00010009
2     - added ECB_64BIT_NATIVE.
3    
4 root 1.15 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 root 1.28 TODO: ecb_minpot, either using bit tricks or ecb_ldXX
20    
21     TODO: __builtin_popcountll exists...
22    
23 root 1.26 TODO: __builtin_powi
24    
25 root 1.15 TODO: https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/
26    
27 root 1.13 implement is_constant for c11: https://gustedt.wordpress.com/2013/08/22/testing-compile-time-constness-and-null-pointers-with-c11s-_generic/
28 root 1.12
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 root 1.32 TODO: generic poprcount etc., also fast_t for them?
76 root 1.33
77     - try to use inttypes.h on mingw.
78    
79 root 1.30 0x00010008
80     - aligned/unaligned load/store, bswap, host order
81     conversion.
82 root 1.32 - generic C++ ecb_rot[lr], ecb_popcount, ecb_ctz,
83     ecb_is_pot32 and ecb_bitrev functions.
84 root 1.30
85 root 1.29 0x00010007
86     - new ECB_OPTIMIZE_SIZE symbol.
87    
88 root 1.28 0x00010006
89 root 1.29 - new ECB_MEMORY_FENCE_RELAXED memory fence.
90 root 1.28 - 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 root 1.27 - change release memory fence to memory barrier on ia32/ia64.
93 root 1.23 - apply ctz/ld patch for msc by Zsbán Ambrus.
94 root 1.24 - ECB_PTRSIZE erroneously was 8 on most 32bit systems (
95     found by Zsbán Ambrus).
96 root 1.25 - improved compiletime detection of endianness, also, allow
97     runtime detection to indicate other-than-big/little endianness.
98 root 1.26 - no memory barrier neded on arm < 6.
99 root 1.23
100 root 1.22 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 root 1.6 0x00010001
106     - add ecb_is_pot32/64.
107     - add intptr_t/uintptr_t.
108     - add ECB_PTRSIZE.
109 root 1.7 - more macros for C/C++ version checks.
110     - support C11 atomics for memory fences.
111     - support gcc-4.7 atomics for memory fences.
112 root 1.10 - support m68k, m88k and sh (patch by Miod Vallat).
113 root 1.11 - add ecb_binary16_to_float.
114 root 1.6
115 root 1.9 TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt
116 sf-exg 1.20 TODO: ffs
117 root 1.1 64 bit variants of everything
118 root 1.2 TODO: examples from X for clz/ctz
119 root 1.3 TODO: arithmetic right shift
120     TODO: template/generic functions for x32/x64 and so on
121 root 1.4 TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0)
122 root 1.3 TODO: generalised shift
123 root 1.8 TODO: #define ECB_FAST_UNALIGNED_ACCESS
124 root 1.3 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 root 1.14
132 root 1.16 TODO: export(=dllexport) & hidden
133     TODO: flatten
134     TODO: warning(msg)
135     TODO: error(msg)
136 root 1.17 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 root 1.16
143 root 1.14 TODO: read/write unaligned macros
144     TODO: htonl and friends
145 sf-exg 1.20 TODO: macro to convert from unsigned to signed "the natural way"
146 root 1.14 TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration
147     TODO: alignof
148    
149