mirror of
https://github.com/urbit/shrub.git
synced 2024-12-18 15:55:00 +03:00
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
|
/* include/c/defs.h
|
||
|
|
**
|
||
|
|
** This file is in the public domain.
|
||
|
|
*/
|
||
|
|
/** Random useful C macros.
|
||
|
|
**/
|
||
|
|
/* Assert. Good to capture.
|
||
|
|
*/
|
||
|
|
// # define c3_assert(x) assert(x)
|
||
|
|
# define c3_assert(x) ( (x) ? 0 : c3_cooked(), assert(x) )
|
||
|
|
|
||
|
|
/* Stub.
|
||
|
|
*/
|
||
|
|
# define c3_stub (assert(!"stub"), 0)
|
||
|
|
|
||
|
|
/* Size in words.
|
||
|
|
*/
|
||
|
|
# define c3_wiseof(x) (((sizeof (x)) + 3) >> 2)
|
||
|
|
|
||
|
|
/* Bits in byte.
|
||
|
|
*/
|
||
|
|
#ifdef C3_GLOBAL
|
||
|
|
c3_y Bts_y[] = {
|
||
|
|
0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
|
||
|
|
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
|
||
|
|
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
|
||
|
|
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
|
||
|
|
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
|
||
|
|
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
|
||
|
|
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
|
||
|
|
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
|
||
|
|
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||
|
|
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||
|
|
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||
|
|
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||
|
|
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||
|
|
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||
|
|
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
|
||
|
|
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8
|
||
|
|
};
|
||
|
|
#else
|
||
|
|
extern c3_y Bts_y[];
|
||
|
|
#endif
|
||
|
|
# define c3_bits_byte(y) Bts_y[y]
|
||
|
|
# define c3_bits_word(w) \
|
||
|
|
( ((w) >> 24) \
|
||
|
|
? (24 + Bts_y[(w) >> 24]) \
|
||
|
|
: ((w) >> 16) \
|
||
|
|
? (16 + Bts_y[(w) >> 16]) \
|
||
|
|
: ((w) >> 8) \
|
||
|
|
? (8 + Bts_y[(w) >> 8]) \
|
||
|
|
: Bts_y[(w)] )
|
||
|
|
|
||
|
|
/* Min and max.
|
||
|
|
*/
|
||
|
|
# define c3_max(x, y) ( ((x) > (y)) ? (x) : (y) )
|
||
|
|
# define c3_min(x, y) ( ((x) < (y)) ? (x) : (y) )
|
||
|
|
|
||
|
|
/* Emergency stdio fix.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
c3_cooked();
|
||
|
|
|
||
|
|
/* Short integers.
|
||
|
|
*/
|
||
|
|
# define c3_s1(a) ( (a) )
|
||
|
|
# define c3_s2(a, b) ( ((b) << 8) | c3_s1(a) )
|
||
|
|
# define c3_s3(a, b, c) ( ((c) << 16) | c3_s2(a, b) )
|
||
|
|
# define c3_s4(a, b, c, d) ( ((d) << 24) | c3_s3(a, b, c) )
|
||
|
|
|
||
|
|
# define c3_s5(a, b, c, d, e) \
|
||
|
|
( ((uint64_t)c3_s1(e) << 32ULL) | c3_s4(a, b, c, d) )
|
||
|
|
# define c3_s6(a, b, c, d, e, f) \
|
||
|
|
( ((uint64_t)c3_s2(e, f) << 32ULL) | c3_s4(a, b, c, d) )
|
||
|
|
# define c3_s7(a, b, c, d, e, f, g) \
|
||
|
|
( ((uint64_t)c3_s3(e, f, g) << 32ULL) | c3_s4(a, b, c, d) )
|
||
|
|
# define c3_s8(a, b, c, d, e, f, g, h) \
|
||
|
|
( ((uint64_t)c3_s4(e, f, g, h) << 32ULL) | c3_s4(a, b, c, d) )
|