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Revision: 1.35
Committed: Tue Jun 22 12:04:22 2021 UTC (2 years, 11 months ago) by root
Branch: MAIN
Changes since 1.34: +1 -0 lines
Log Message:
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# User Rev Content
1 root 1.34 0x00010009
2 root 1.35 - added ecb_i2a family of functions.
3 root 1.34 - added ECB_64BIT_NATIVE.
4    
5 root 1.15 TODO:
6     08:30:06 <b_jonas> I think it could be worth to add a macro that works like alignof or _Alignof on sane
7     compilers, and like __alignof on MS compilers that support it, see
8     http://msdn.microsoft.com/en-us/library/45t0s5f4.aspx
9     08:30:24 <b_jonas> even if you can't support it on all the old compilers
10     08:31:17 <b_jonas> I'd also like a macro for alignas, but sadly, that seems impossible in general, because
11     the MS compiler only has some half-attempt to do something similar but with different and
12     more broken semantics, see http://msdn.microsoft.com/en-us/library/83ythb65.aspx
13     08:31:35 <b_jonas> but I wonder if some special case could still be worth to support
14     08:32:23 <b_jonas> probably not, because it would just account to making a union with a highly aligned type,
15     which is something I can do on any compiler portably
16    
17     TODO: #define ECB_IS_INTEGRAL(x) !((1 ? 1 : (x)) / 2)
18     #define ECB_IS_INTEGRAL(x) (sizeof ((x) + 1.0f) != sizeof((x) + 1ULL))
19    
20 root 1.28 TODO: ecb_minpot, either using bit tricks or ecb_ldXX
21    
22     TODO: __builtin_popcountll exists...
23    
24 root 1.26 TODO: __builtin_powi
25    
26 root 1.15 TODO: https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/
27    
28 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/
29 root 1.12
30     #ifdef _MSC_VER
31    
32     #include <stdlib.h>
33     #define bswap_32(x) _byteswap_ulong(x)
34     #define bswap_64(x) _byteswap_uint64(x)
35    
36     #elif defined(__APPLE__)
37    
38     // Mac OS X / Darwin features
39     #include <libkern/OSByteOrder.h>
40     #define bswap_32(x) OSSwapInt32(x)
41     #define bswap_64(x) OSSwapInt64(x)
42    
43     #elif defined(__sun) || defined(sun)
44    
45     #include <sys/byteorder.h>
46     #define bswap_32(x) BSWAP_32(x)
47     #define bswap_64(x) BSWAP_64(x)
48    
49     #elif defined(__FreeBSD__)
50    
51     #include <sys/endian.h>
52     #define bswap_32(x) bswap32(x)
53     #define bswap_64(x) bswap64(x)
54    
55     #elif defined(__OpenBSD__)
56    
57     #include <sys/types.h>
58     #define bswap_32(x) swap32(x)
59     #define bswap_64(x) swap64(x)
60    
61     #elif defined(__NetBSD__)
62    
63     #include <sys/types.h>
64     #include <machine/bswap.h>
65     #if defined(__BSWAP_RENAME) && !defined(__bswap_32)
66     #define bswap_32(x) bswap32(x)
67     #define bswap_64(x) bswap64(x)
68     #endif
69    
70     #else
71    
72     #include <byteswap.h>
73    
74     #endif
75    
76 root 1.32 TODO: generic poprcount etc., also fast_t for them?
77 root 1.33
78     - try to use inttypes.h on mingw.
79    
80 root 1.30 0x00010008
81     - aligned/unaligned load/store, bswap, host order
82     conversion.
83 root 1.32 - generic C++ ecb_rot[lr], ecb_popcount, ecb_ctz,
84     ecb_is_pot32 and ecb_bitrev functions.
85 root 1.30
86 root 1.29 0x00010007
87     - new ECB_OPTIMIZE_SIZE symbol.
88    
89 root 1.28 0x00010006
90 root 1.29 - new ECB_MEMORY_FENCE_RELAXED memory fence.
91 root 1.28 - use acquire/eelease memory barriers on sun workshop pro, not read/write.
92     - rely on c++ compiler barriers to do the right thing in gcc/clang.
93 root 1.27 - change release memory fence to memory barrier on ia32/ia64.
94 root 1.23 - apply ctz/ld patch for msc by Zsbán Ambrus.
95 root 1.24 - ECB_PTRSIZE erroneously was 8 on most 32bit systems (
96     found by Zsbán Ambrus).
97 root 1.25 - improved compiletime detection of endianness, also, allow
98     runtime detection to indicate other-than-big/little endianness.
99 root 1.26 - no memory barrier neded on arm < 6.
100 root 1.23
101 root 1.22 0x00010005
102     - improve ecb_binary16_to_float.
103     - add ecb_float_to_binary16.
104     - add ecb_binary16_to_binary32 and ecb_binary32_to_binary16 pair.
105    
106 root 1.6 0x00010001
107     - add ecb_is_pot32/64.
108     - add intptr_t/uintptr_t.
109     - add ECB_PTRSIZE.
110 root 1.7 - more macros for C/C++ version checks.
111     - support C11 atomics for memory fences.
112     - support gcc-4.7 atomics for memory fences.
113 root 1.10 - support m68k, m88k and sh (patch by Miod Vallat).
114 root 1.11 - add ecb_binary16_to_float.
115 root 1.6
116 root 1.9 TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt
117 sf-exg 1.20 TODO: ffs
118 root 1.1 64 bit variants of everything
119 root 1.2 TODO: examples from X for clz/ctz
120 root 1.3 TODO: arithmetic right shift
121     TODO: template/generic functions for x32/x64 and so on
122 root 1.4 TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0)
123 root 1.3 TODO: generalised shift
124 root 1.8 TODO: #define ECB_FAST_UNALIGNED_ACCESS
125 root 1.3 unsigned long gensh(unsigned long v, int x) {
126     int a, b;
127     a = (v << x) & -(((unsigned int)x) < 32);
128     x = -x;
129     b = (v >> x) & -(((unsigned int)x) < 32);
130     return a|b;
131     }
132 root 1.14
133 root 1.16 TODO: export(=dllexport) & hidden
134     TODO: flatten
135     TODO: warning(msg)
136     TODO: error(msg)
137 root 1.17 TODO: leaf (uh), noclone (hmmm)
138     TODO: nonnull, returns_nonnull
139     TODO: nothrow
140     TODO: used
141     TODO: trap
142     TODO: http://llvm.org/docs/doxygen/html/Compiler_8h_source.html
143 root 1.16
144 root 1.14 TODO: read/write unaligned macros
145     TODO: htonl and friends
146 sf-exg 1.20 TODO: macro to convert from unsigned to signed "the natural way"
147 root 1.14 TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration
148     TODO: alignof
149    
150