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Revision: 1.25
Committed: Wed Nov 25 02:36:53 2015 UTC (8 years, 6 months ago) by root
Branch: MAIN
Changes since 1.24: +2 -0 lines
Log Message:
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File Contents

# Content
1 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 TODO: https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/
17
18 implement is_constant for c11: https://gustedt.wordpress.com/2013/08/22/testing-compile-time-constness-and-null-pointers-with-c11s-_generic/
19
20 #ifdef _MSC_VER
21
22 #include <stdlib.h>
23 #define bswap_32(x) _byteswap_ulong(x)
24 #define bswap_64(x) _byteswap_uint64(x)
25
26 #elif defined(__APPLE__)
27
28 // Mac OS X / Darwin features
29 #include <libkern/OSByteOrder.h>
30 #define bswap_32(x) OSSwapInt32(x)
31 #define bswap_64(x) OSSwapInt64(x)
32
33 #elif defined(__sun) || defined(sun)
34
35 #include <sys/byteorder.h>
36 #define bswap_32(x) BSWAP_32(x)
37 #define bswap_64(x) BSWAP_64(x)
38
39 #elif defined(__FreeBSD__)
40
41 #include <sys/endian.h>
42 #define bswap_32(x) bswap32(x)
43 #define bswap_64(x) bswap64(x)
44
45 #elif defined(__OpenBSD__)
46
47 #include <sys/types.h>
48 #define bswap_32(x) swap32(x)
49 #define bswap_64(x) swap64(x)
50
51 #elif defined(__NetBSD__)
52
53 #include <sys/types.h>
54 #include <machine/bswap.h>
55 #if defined(__BSWAP_RENAME) && !defined(__bswap_32)
56 #define bswap_32(x) bswap32(x)
57 #define bswap_64(x) bswap64(x)
58 #endif
59
60 #else
61
62 #include <byteswap.h>
63
64 #endif
65
66 - apply ctz/ld patch for msc by Zsbán Ambrus.
67 - ECB_PTRSIZE erroneously was 8 on most 32bit systems (
68 found by Zsbán Ambrus).
69 - improved compiletime detection of endianness, also, allow
70 runtime detection to indicate other-than-big/little endianness.
71
72 0x00010005
73 - improve ecb_binary16_to_float.
74 - add ecb_float_to_binary16.
75 - add ecb_binary16_to_binary32 and ecb_binary32_to_binary16 pair.
76
77 0x00010001
78 - add ecb_is_pot32/64.
79 - add intptr_t/uintptr_t.
80 - add ECB_PTRSIZE.
81 - more macros for C/C++ version checks.
82 - support C11 atomics for memory fences.
83 - support gcc-4.7 atomics for memory fences.
84 - support m68k, m88k and sh (patch by Miod Vallat).
85 - add ecb_binary16_to_float.
86
87 TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt
88 TODO: ffs
89 64 bit variants of everything
90 TODO: examples from X for clz/ctz
91 TODO: arithmetic right shift
92 TODO: template/generic functions for x32/x64 and so on
93 TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0)
94 TODO: generalised shift
95 TODO: #define ECB_FAST_UNALIGNED_ACCESS
96 unsigned long gensh(unsigned long v, int x) {
97 int a, b;
98 a = (v << x) & -(((unsigned int)x) < 32);
99 x = -x;
100 b = (v >> x) & -(((unsigned int)x) < 32);
101 return a|b;
102 }
103
104 TODO: export(=dllexport) & hidden
105 TODO: flatten
106 TODO: warning(msg)
107 TODO: error(msg)
108 TODO: leaf (uh), noclone (hmmm)
109 TODO: nonnull, returns_nonnull
110 TODO: nothrow
111 TODO: used
112 TODO: trap
113 TODO: http://llvm.org/docs/doxygen/html/Compiler_8h_source.html
114
115 TODO: read/write unaligned macros
116 TODO: htonl and friends
117 TODO: macro to convert from unsigned to signed "the natural way"
118 TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration
119 TODO: alignof
120
121