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Revision: 1.38
Committed: Wed Mar 23 09:58:06 2022 UTC (2 years, 2 months ago) by root
Branch: MAIN
Changes since 1.37: +3 -0 lines
Log Message:
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File Contents

# User Rev Content
1 root 1.38 0x0001000b
2     - added ecb_gray*_{de,en}code functions.
3    
4 root 1.37 0x0001000a
5     - added ecb_ptrmix.
6    
7 root 1.34 0x00010009
8 root 1.35 - added ecb_i2a family of functions.
9 root 1.34 - added ECB_64BIT_NATIVE.
10    
11 root 1.15 TODO:
12     08:30:06 <b_jonas> I think it could be worth to add a macro that works like alignof or _Alignof on sane
13     compilers, and like __alignof on MS compilers that support it, see
14     http://msdn.microsoft.com/en-us/library/45t0s5f4.aspx
15     08:30:24 <b_jonas> even if you can't support it on all the old compilers
16     08:31:17 <b_jonas> I'd also like a macro for alignas, but sadly, that seems impossible in general, because
17     the MS compiler only has some half-attempt to do something similar but with different and
18     more broken semantics, see http://msdn.microsoft.com/en-us/library/83ythb65.aspx
19     08:31:35 <b_jonas> but I wonder if some special case could still be worth to support
20     08:32:23 <b_jonas> probably not, because it would just account to making a union with a highly aligned type,
21     which is something I can do on any compiler portably
22    
23     TODO: #define ECB_IS_INTEGRAL(x) !((1 ? 1 : (x)) / 2)
24     #define ECB_IS_INTEGRAL(x) (sizeof ((x) + 1.0f) != sizeof((x) + 1ULL))
25    
26 root 1.28 TODO: ecb_minpot, either using bit tricks or ecb_ldXX
27    
28     TODO: __builtin_popcountll exists...
29    
30 root 1.26 TODO: __builtin_powi
31    
32 root 1.15 TODO: https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/
33    
34 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/
35 root 1.12
36     #ifdef _MSC_VER
37    
38     #include <stdlib.h>
39     #define bswap_32(x) _byteswap_ulong(x)
40     #define bswap_64(x) _byteswap_uint64(x)
41    
42     #elif defined(__APPLE__)
43    
44     // Mac OS X / Darwin features
45     #include <libkern/OSByteOrder.h>
46     #define bswap_32(x) OSSwapInt32(x)
47     #define bswap_64(x) OSSwapInt64(x)
48    
49     #elif defined(__sun) || defined(sun)
50    
51     #include <sys/byteorder.h>
52     #define bswap_32(x) BSWAP_32(x)
53     #define bswap_64(x) BSWAP_64(x)
54    
55     #elif defined(__FreeBSD__)
56    
57     #include <sys/endian.h>
58     #define bswap_32(x) bswap32(x)
59     #define bswap_64(x) bswap64(x)
60    
61     #elif defined(__OpenBSD__)
62    
63     #include <sys/types.h>
64     #define bswap_32(x) swap32(x)
65     #define bswap_64(x) swap64(x)
66    
67     #elif defined(__NetBSD__)
68    
69     #include <sys/types.h>
70     #include <machine/bswap.h>
71     #if defined(__BSWAP_RENAME) && !defined(__bswap_32)
72     #define bswap_32(x) bswap32(x)
73     #define bswap_64(x) bswap64(x)
74     #endif
75    
76     #else
77    
78     #include <byteswap.h>
79    
80     #endif
81    
82 root 1.32 TODO: generic poprcount etc., also fast_t for them?
83 root 1.33
84 root 1.36 - allow any rotate count in rcb_rot*, at the expense
85     of bad optimisation results on some platforms or with
86     some word sizes.
87 root 1.33 - try to use inttypes.h on mingw.
88    
89 root 1.30 0x00010008
90     - aligned/unaligned load/store, bswap, host order
91     conversion.
92 root 1.32 - generic C++ ecb_rot[lr], ecb_popcount, ecb_ctz,
93     ecb_is_pot32 and ecb_bitrev functions.
94 root 1.30
95 root 1.29 0x00010007
96     - new ECB_OPTIMIZE_SIZE symbol.
97    
98 root 1.28 0x00010006
99 root 1.29 - new ECB_MEMORY_FENCE_RELAXED memory fence.
100 root 1.28 - use acquire/eelease memory barriers on sun workshop pro, not read/write.
101     - rely on c++ compiler barriers to do the right thing in gcc/clang.
102 root 1.27 - change release memory fence to memory barrier on ia32/ia64.
103 root 1.23 - apply ctz/ld patch for msc by Zsbán Ambrus.
104 root 1.24 - ECB_PTRSIZE erroneously was 8 on most 32bit systems (
105     found by Zsbán Ambrus).
106 root 1.25 - improved compiletime detection of endianness, also, allow
107     runtime detection to indicate other-than-big/little endianness.
108 root 1.26 - no memory barrier neded on arm < 6.
109 root 1.23
110 root 1.22 0x00010005
111     - improve ecb_binary16_to_float.
112     - add ecb_float_to_binary16.
113     - add ecb_binary16_to_binary32 and ecb_binary32_to_binary16 pair.
114    
115 root 1.6 0x00010001
116     - add ecb_is_pot32/64.
117     - add intptr_t/uintptr_t.
118     - add ECB_PTRSIZE.
119 root 1.7 - more macros for C/C++ version checks.
120     - support C11 atomics for memory fences.
121     - support gcc-4.7 atomics for memory fences.
122 root 1.10 - support m68k, m88k and sh (patch by Miod Vallat).
123 root 1.11 - add ecb_binary16_to_float.
124 root 1.6
125 root 1.9 TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt
126 sf-exg 1.20 TODO: ffs
127 root 1.1 64 bit variants of everything
128 root 1.2 TODO: examples from X for clz/ctz
129 root 1.3 TODO: arithmetic right shift
130     TODO: template/generic functions for x32/x64 and so on
131 root 1.4 TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0)
132 root 1.3 TODO: generalised shift
133 root 1.8 TODO: #define ECB_FAST_UNALIGNED_ACCESS
134 root 1.3 unsigned long gensh(unsigned long v, int x) {
135     int a, b;
136     a = (v << x) & -(((unsigned int)x) < 32);
137     x = -x;
138     b = (v >> x) & -(((unsigned int)x) < 32);
139     return a|b;
140     }
141 root 1.14
142 root 1.16 TODO: export(=dllexport) & hidden
143     TODO: flatten
144     TODO: warning(msg)
145     TODO: error(msg)
146 root 1.17 TODO: leaf (uh), noclone (hmmm)
147     TODO: nonnull, returns_nonnull
148     TODO: nothrow
149     TODO: used
150     TODO: trap
151     TODO: http://llvm.org/docs/doxygen/html/Compiler_8h_source.html
152 root 1.16
153 root 1.14 TODO: read/write unaligned macros
154     TODO: htonl and friends
155 sf-exg 1.20 TODO: macro to convert from unsigned to signed "the natural way"
156 root 1.14 TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration
157     TODO: alignof
158    
159