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Revision: 1.36
Committed: Sat Jul 31 16:13:30 2021 UTC (2 years, 10 months ago) by root
Branch: MAIN
Changes since 1.35: +3 -0 lines
Log Message:
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File Contents

# 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 root 1.36 - allow any rotate count in rcb_rot*, at the expense
79     of bad optimisation results on some platforms or with
80     some word sizes.
81 root 1.33 - try to use inttypes.h on mingw.
82    
83 root 1.30 0x00010008
84     - aligned/unaligned load/store, bswap, host order
85     conversion.
86 root 1.32 - generic C++ ecb_rot[lr], ecb_popcount, ecb_ctz,
87     ecb_is_pot32 and ecb_bitrev functions.
88 root 1.30
89 root 1.29 0x00010007
90     - new ECB_OPTIMIZE_SIZE symbol.
91    
92 root 1.28 0x00010006
93 root 1.29 - new ECB_MEMORY_FENCE_RELAXED memory fence.
94 root 1.28 - use acquire/eelease memory barriers on sun workshop pro, not read/write.
95     - rely on c++ compiler barriers to do the right thing in gcc/clang.
96 root 1.27 - change release memory fence to memory barrier on ia32/ia64.
97 root 1.23 - apply ctz/ld patch for msc by Zsbán Ambrus.
98 root 1.24 - ECB_PTRSIZE erroneously was 8 on most 32bit systems (
99     found by Zsbán Ambrus).
100 root 1.25 - improved compiletime detection of endianness, also, allow
101     runtime detection to indicate other-than-big/little endianness.
102 root 1.26 - no memory barrier neded on arm < 6.
103 root 1.23
104 root 1.22 0x00010005
105     - improve ecb_binary16_to_float.
106     - add ecb_float_to_binary16.
107     - add ecb_binary16_to_binary32 and ecb_binary32_to_binary16 pair.
108    
109 root 1.6 0x00010001
110     - add ecb_is_pot32/64.
111     - add intptr_t/uintptr_t.
112     - add ECB_PTRSIZE.
113 root 1.7 - more macros for C/C++ version checks.
114     - support C11 atomics for memory fences.
115     - support gcc-4.7 atomics for memory fences.
116 root 1.10 - support m68k, m88k and sh (patch by Miod Vallat).
117 root 1.11 - add ecb_binary16_to_float.
118 root 1.6
119 root 1.9 TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt
120 sf-exg 1.20 TODO: ffs
121 root 1.1 64 bit variants of everything
122 root 1.2 TODO: examples from X for clz/ctz
123 root 1.3 TODO: arithmetic right shift
124     TODO: template/generic functions for x32/x64 and so on
125 root 1.4 TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0)
126 root 1.3 TODO: generalised shift
127 root 1.8 TODO: #define ECB_FAST_UNALIGNED_ACCESS
128 root 1.3 unsigned long gensh(unsigned long v, int x) {
129     int a, b;
130     a = (v << x) & -(((unsigned int)x) < 32);
131     x = -x;
132     b = (v >> x) & -(((unsigned int)x) < 32);
133     return a|b;
134     }
135 root 1.14
136 root 1.16 TODO: export(=dllexport) & hidden
137     TODO: flatten
138     TODO: warning(msg)
139     TODO: error(msg)
140 root 1.17 TODO: leaf (uh), noclone (hmmm)
141     TODO: nonnull, returns_nonnull
142     TODO: nothrow
143     TODO: used
144     TODO: trap
145     TODO: http://llvm.org/docs/doxygen/html/Compiler_8h_source.html
146 root 1.16
147 root 1.14 TODO: read/write unaligned macros
148     TODO: htonl and friends
149 sf-exg 1.20 TODO: macro to convert from unsigned to signed "the natural way"
150 root 1.14 TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration
151     TODO: alignof
152    
153