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Revision: 1.37
Committed: Fri Aug 20 19:39:15 2021 UTC (2 years, 9 months ago) by root
Branch: MAIN
CVS Tags: rxvt-unicode-rel-9_29, rxvt-unicode-rel-9_30
Changes since 1.36: +3 -0 lines
Log Message:
mix/unmix

File Contents

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