| 1 |
implement is_constant for c11: https://gustedt.wordpress.com/2013/08/22/testing-compile-time-constness-and-null-pointers-with-c11s-_generic/ |
| 2 |
|
| 3 |
#ifdef _MSC_VER |
| 4 |
|
| 5 |
#include <stdlib.h> |
| 6 |
#define bswap_32(x) _byteswap_ulong(x) |
| 7 |
#define bswap_64(x) _byteswap_uint64(x) |
| 8 |
|
| 9 |
#elif defined(__APPLE__) |
| 10 |
|
| 11 |
// Mac OS X / Darwin features |
| 12 |
#include <libkern/OSByteOrder.h> |
| 13 |
#define bswap_32(x) OSSwapInt32(x) |
| 14 |
#define bswap_64(x) OSSwapInt64(x) |
| 15 |
|
| 16 |
#elif defined(__sun) || defined(sun) |
| 17 |
|
| 18 |
#include <sys/byteorder.h> |
| 19 |
#define bswap_32(x) BSWAP_32(x) |
| 20 |
#define bswap_64(x) BSWAP_64(x) |
| 21 |
|
| 22 |
#elif defined(__FreeBSD__) |
| 23 |
|
| 24 |
#include <sys/endian.h> |
| 25 |
#define bswap_32(x) bswap32(x) |
| 26 |
#define bswap_64(x) bswap64(x) |
| 27 |
|
| 28 |
#elif defined(__OpenBSD__) |
| 29 |
|
| 30 |
#include <sys/types.h> |
| 31 |
#define bswap_32(x) swap32(x) |
| 32 |
#define bswap_64(x) swap64(x) |
| 33 |
|
| 34 |
#elif defined(__NetBSD__) |
| 35 |
|
| 36 |
#include <sys/types.h> |
| 37 |
#include <machine/bswap.h> |
| 38 |
#if defined(__BSWAP_RENAME) && !defined(__bswap_32) |
| 39 |
#define bswap_32(x) bswap32(x) |
| 40 |
#define bswap_64(x) bswap64(x) |
| 41 |
#endif |
| 42 |
|
| 43 |
#else |
| 44 |
|
| 45 |
#include <byteswap.h> |
| 46 |
|
| 47 |
#endif |
| 48 |
|
| 49 |
0x00010001 |
| 50 |
- add ecb_is_pot32/64. |
| 51 |
- add intptr_t/uintptr_t. |
| 52 |
- add ECB_PTRSIZE. |
| 53 |
- more macros for C/C++ version checks. |
| 54 |
- support C11 atomics for memory fences. |
| 55 |
- support gcc-4.7 atomics for memory fences. |
| 56 |
- support m68k, m88k and sh (patch by Miod Vallat). |
| 57 |
- add ecb_binary16_to_float. |
| 58 |
|
| 59 |
TODO: ecb_restrict_array etc. http://ue.tst.eu/5093eafd713ec5fda776d8065070aa4c.txt |
| 60 |
TODO: ffs/clz |
| 61 |
64 bit variants of everything |
| 62 |
TODO: examples from X for clz/ctz |
| 63 |
TODO: arithmetic right shift |
| 64 |
TODO: template/generic functions for x32/x64 and so on |
| 65 |
TODO: #define ecb_integer_multiples_of(n,d) ((char (*)[d])(n) - (char (*)[d])0) |
| 66 |
TODO: generalised shift |
| 67 |
TODO: #define ECB_FAST_UNALIGNED_ACCESS |
| 68 |
unsigned long gensh(unsigned long v, int x) { |
| 69 |
int a, b; |
| 70 |
a = (v << x) & -(((unsigned int)x) < 32); |
| 71 |
x = -x; |
| 72 |
b = (v >> x) & -(((unsigned int)x) < 32); |
| 73 |
return a|b; |
| 74 |
} |
| 75 |
|
| 76 |
TODO: read/write unaligned macros |
| 77 |
TODO: htonl and friends |
| 78 |
TODO: macro to convetr from unsigned to signed "the natural way" |
| 79 |
TODO: ecb_deprecated with message |
| 80 |
TODO: ecb_static_assert, with message (just like boost), or somesuch, using array-declaration |
| 81 |
TODO: alignof |
| 82 |
|
| 83 |
|
