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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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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: __builtin_powi
17
18 TODO: https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/
19
20 implement is_constant for c11: https://gustedt.wordpress.com/2013/08/22/testing-compile-time-constness-and-null-pointers-with-c11s-_generic/
21
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 - change release memory fence to memory barrier on ia32/ia64.
69 - apply ctz/ld patch for msc by Zsbán Ambrus.
70 - ECB_PTRSIZE erroneously was 8 on most 32bit systems (
71 found by Zsbán Ambrus).
72 - improved compiletime detection of endianness, also, allow
73 runtime detection to indicate other-than-big/little endianness.
74 - no memory barrier neded on arm < 6.
75
76 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 0x00010001
82 - add ecb_is_pot32/64.
83 - add intptr_t/uintptr_t.
84 - add ECB_PTRSIZE.
85 - more macros for C/C++ version checks.
86 - support C11 atomics for memory fences.
87 - support gcc-4.7 atomics for memory fences.
88 - support m68k, m88k and sh (patch by Miod Vallat).
89 - add ecb_binary16_to_float.
90
91 TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt
92 TODO: ffs
93 64 bit variants of everything
94 TODO: examples from X for clz/ctz
95 TODO: arithmetic right shift
96 TODO: template/generic functions for x32/x64 and so on
97 TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0)
98 TODO: generalised shift
99 TODO: #define ECB_FAST_UNALIGNED_ACCESS
100 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
108 TODO: export(=dllexport) & hidden
109 TODO: flatten
110 TODO: warning(msg)
111 TODO: error(msg)
112 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
119 TODO: read/write unaligned macros
120 TODO: htonl and friends
121 TODO: macro to convert from unsigned to signed "the natural way"
122 TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration
123 TODO: alignof
124
125