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Revision: 1.27
Committed: Sat Oct 27 04:49:39 2018 UTC (5 years, 7 months ago) by root
Branch: MAIN
Changes since 1.26: +1 -0 lines
Log Message:
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# User Rev Content
1 root 1.15 TODO:
2     08:30:06 <b_jonas> I think it could be worth to add a macro that works like alignof or _Alignof on sane
3     compilers, and like __alignof on MS compilers that support it, see
4     http://msdn.microsoft.com/en-us/library/45t0s5f4.aspx
5     08:30:24 <b_jonas> even if you can't support it on all the old compilers
6     08:31:17 <b_jonas> I'd also like a macro for alignas, but sadly, that seems impossible in general, because
7     the MS compiler only has some half-attempt to do something similar but with different and
8     more broken semantics, see http://msdn.microsoft.com/en-us/library/83ythb65.aspx
9     08:31:35 <b_jonas> but I wonder if some special case could still be worth to support
10     08:32:23 <b_jonas> probably not, because it would just account to making a union with a highly aligned type,
11     which is something I can do on any compiler portably
12    
13     TODO: #define ECB_IS_INTEGRAL(x) !((1 ? 1 : (x)) / 2)
14     #define ECB_IS_INTEGRAL(x) (sizeof ((x) + 1.0f) != sizeof((x) + 1ULL))
15    
16 root 1.26 TODO: __builtin_powi
17    
18 root 1.15 TODO: https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/
19    
20 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/
21 root 1.12
22     #ifdef _MSC_VER
23    
24     #include <stdlib.h>
25     #define bswap_32(x) _byteswap_ulong(x)
26     #define bswap_64(x) _byteswap_uint64(x)
27    
28     #elif defined(__APPLE__)
29    
30     // Mac OS X / Darwin features
31     #include <libkern/OSByteOrder.h>
32     #define bswap_32(x) OSSwapInt32(x)
33     #define bswap_64(x) OSSwapInt64(x)
34    
35     #elif defined(__sun) || defined(sun)
36    
37     #include <sys/byteorder.h>
38     #define bswap_32(x) BSWAP_32(x)
39     #define bswap_64(x) BSWAP_64(x)
40    
41     #elif defined(__FreeBSD__)
42    
43     #include <sys/endian.h>
44     #define bswap_32(x) bswap32(x)
45     #define bswap_64(x) bswap64(x)
46    
47     #elif defined(__OpenBSD__)
48    
49     #include <sys/types.h>
50     #define bswap_32(x) swap32(x)
51     #define bswap_64(x) swap64(x)
52    
53     #elif defined(__NetBSD__)
54    
55     #include <sys/types.h>
56     #include <machine/bswap.h>
57     #if defined(__BSWAP_RENAME) && !defined(__bswap_32)
58     #define bswap_32(x) bswap32(x)
59     #define bswap_64(x) bswap64(x)
60     #endif
61    
62     #else
63    
64     #include <byteswap.h>
65    
66     #endif
67    
68 root 1.27 - change release memory fence to memory barrier on ia32/ia64.
69 root 1.23 - apply ctz/ld patch for msc by Zsbán Ambrus.
70 root 1.24 - ECB_PTRSIZE erroneously was 8 on most 32bit systems (
71     found by Zsbán Ambrus).
72 root 1.25 - improved compiletime detection of endianness, also, allow
73     runtime detection to indicate other-than-big/little endianness.
74 root 1.26 - no memory barrier neded on arm < 6.
75 root 1.23
76 root 1.22 0x00010005
77     - improve ecb_binary16_to_float.
78     - add ecb_float_to_binary16.
79     - add ecb_binary16_to_binary32 and ecb_binary32_to_binary16 pair.
80    
81 root 1.6 0x00010001
82     - add ecb_is_pot32/64.
83     - add intptr_t/uintptr_t.
84     - add ECB_PTRSIZE.
85 root 1.7 - more macros for C/C++ version checks.
86     - support C11 atomics for memory fences.
87     - support gcc-4.7 atomics for memory fences.
88 root 1.10 - support m68k, m88k and sh (patch by Miod Vallat).
89 root 1.11 - add ecb_binary16_to_float.
90 root 1.6
91 root 1.9 TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt
92 sf-exg 1.20 TODO: ffs
93 root 1.1 64 bit variants of everything
94 root 1.2 TODO: examples from X for clz/ctz
95 root 1.3 TODO: arithmetic right shift
96     TODO: template/generic functions for x32/x64 and so on
97 root 1.4 TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0)
98 root 1.3 TODO: generalised shift
99 root 1.8 TODO: #define ECB_FAST_UNALIGNED_ACCESS
100 root 1.3 unsigned long gensh(unsigned long v, int x) {
101     int a, b;
102     a = (v << x) & -(((unsigned int)x) < 32);
103     x = -x;
104     b = (v >> x) & -(((unsigned int)x) < 32);
105     return a|b;
106     }
107 root 1.14
108 root 1.16 TODO: export(=dllexport) & hidden
109     TODO: flatten
110     TODO: warning(msg)
111     TODO: error(msg)
112 root 1.17 TODO: leaf (uh), noclone (hmmm)
113     TODO: nonnull, returns_nonnull
114     TODO: nothrow
115     TODO: used
116     TODO: trap
117     TODO: http://llvm.org/docs/doxygen/html/Compiler_8h_source.html
118 root 1.16
119 root 1.14 TODO: read/write unaligned macros
120     TODO: htonl and friends
121 sf-exg 1.20 TODO: macro to convert from unsigned to signed "the natural way"
122 root 1.14 TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration
123     TODO: alignof
124    
125