| 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: https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments/ |
| 17 |
|
| 18 |
implement is_constant for c11: https://gustedt.wordpress.com/2013/08/22/testing-compile-time-constness-and-null-pointers-with-c11s-_generic/ |
| 19 |
|
| 20 |
#ifdef _MSC_VER |
| 21 |
|
| 22 |
#include <stdlib.h> |
| 23 |
#define bswap_32(x) _byteswap_ulong(x) |
| 24 |
#define bswap_64(x) _byteswap_uint64(x) |
| 25 |
|
| 26 |
#elif defined(__APPLE__) |
| 27 |
|
| 28 |
// Mac OS X / Darwin features |
| 29 |
#include <libkern/OSByteOrder.h> |
| 30 |
#define bswap_32(x) OSSwapInt32(x) |
| 31 |
#define bswap_64(x) OSSwapInt64(x) |
| 32 |
|
| 33 |
#elif defined(__sun) || defined(sun) |
| 34 |
|
| 35 |
#include <sys/byteorder.h> |
| 36 |
#define bswap_32(x) BSWAP_32(x) |
| 37 |
#define bswap_64(x) BSWAP_64(x) |
| 38 |
|
| 39 |
#elif defined(__FreeBSD__) |
| 40 |
|
| 41 |
#include <sys/endian.h> |
| 42 |
#define bswap_32(x) bswap32(x) |
| 43 |
#define bswap_64(x) bswap64(x) |
| 44 |
|
| 45 |
#elif defined(__OpenBSD__) |
| 46 |
|
| 47 |
#include <sys/types.h> |
| 48 |
#define bswap_32(x) swap32(x) |
| 49 |
#define bswap_64(x) swap64(x) |
| 50 |
|
| 51 |
#elif defined(__NetBSD__) |
| 52 |
|
| 53 |
#include <sys/types.h> |
| 54 |
#include <machine/bswap.h> |
| 55 |
#if defined(__BSWAP_RENAME) && !defined(__bswap_32) |
| 56 |
#define bswap_32(x) bswap32(x) |
| 57 |
#define bswap_64(x) bswap64(x) |
| 58 |
#endif |
| 59 |
|
| 60 |
#else |
| 61 |
|
| 62 |
#include <byteswap.h> |
| 63 |
|
| 64 |
#endif |
| 65 |
|
| 66 |
- apply ctz/ld patch for msc by Zsbán Ambrus. |
| 67 |
- ECB_PTRSIZE erroneously was 8 on most 32bit systems ( |
| 68 |
found by Zsbán Ambrus). |
| 69 |
|
| 70 |
0x00010005 |
| 71 |
- improve ecb_binary16_to_float. |
| 72 |
- add ecb_float_to_binary16. |
| 73 |
- add ecb_binary16_to_binary32 and ecb_binary32_to_binary16 pair. |
| 74 |
|
| 75 |
0x00010001 |
| 76 |
- add ecb_is_pot32/64. |
| 77 |
- add intptr_t/uintptr_t. |
| 78 |
- add ECB_PTRSIZE. |
| 79 |
- more macros for C/C++ version checks. |
| 80 |
- support C11 atomics for memory fences. |
| 81 |
- support gcc-4.7 atomics for memory fences. |
| 82 |
- support m68k, m88k and sh (patch by Miod Vallat). |
| 83 |
- add ecb_binary16_to_float. |
| 84 |
|
| 85 |
TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt |
| 86 |
TODO: ffs |
| 87 |
64 bit variants of everything |
| 88 |
TODO: examples from X for clz/ctz |
| 89 |
TODO: arithmetic right shift |
| 90 |
TODO: template/generic functions for x32/x64 and so on |
| 91 |
TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0) |
| 92 |
TODO: generalised shift |
| 93 |
TODO: #define ECB_FAST_UNALIGNED_ACCESS |
| 94 |
unsigned long gensh(unsigned long v, int x) { |
| 95 |
int a, b; |
| 96 |
a = (v << x) & -(((unsigned int)x) < 32); |
| 97 |
x = -x; |
| 98 |
b = (v >> x) & -(((unsigned int)x) < 32); |
| 99 |
return a|b; |
| 100 |
} |
| 101 |
|
| 102 |
TODO: export(=dllexport) & hidden |
| 103 |
TODO: flatten |
| 104 |
TODO: warning(msg) |
| 105 |
TODO: error(msg) |
| 106 |
TODO: leaf (uh), noclone (hmmm) |
| 107 |
TODO: nonnull, returns_nonnull |
| 108 |
TODO: nothrow |
| 109 |
TODO: used |
| 110 |
TODO: trap |
| 111 |
TODO: http://llvm.org/docs/doxygen/html/Compiler_8h_source.html |
| 112 |
|
| 113 |
TODO: read/write unaligned macros |
| 114 |
TODO: htonl and friends |
| 115 |
TODO: macro to convert from unsigned to signed "the natural way" |
| 116 |
TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration |
| 117 |
TODO: alignof |
| 118 |
|
| 119 |
|
