1
0
mirror of https://github.com/ilyakooo0/urbit.git synced 2024-12-30 10:27:11 +03:00
urbit/include/c/defs.h
2015-06-23 21:29:11 -04:00

93 lines
2.6 KiB
C

/* include/c/defs.h
**
** This file is in the public domain.
*/
/** Loobeans - inverse booleans to match nock.
**/
# define c3y 0
# define c3n 1
# define _(x) (c3y == (x))
# define __(x) ((x) ? c3y : c3n)
# define c3a(x, y) __(_(x) && _(y))
# define c3o(x, y) __(_(x) || _(y))
/** 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)
/* Bit counting.
*/
# define c3_bits_word(w) ((w) ? (32 - __builtin_clz(w)) : 0)
/* Min and max.
*/
# define c3_max(x, y) ( ((x) > (y)) ? (x) : (y) )
# define c3_min(x, y) ( ((x) < (y)) ? (x) : (y) )
/* Rotate.
*/
# define c3_rotw(r, x) ( ((x) << (r)) | ((x) >> (32 - (r))) )
/* 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) )
/* Byte-order twiddling.
*/
# define c3_flip32(w) \
( (((w) >> 24) & 0xff) \
| (((w) >> 16) & 0xff) << 8 \
| (((w) >> 8) & 0xff) << 16 \
| ( (w) & 0xff) << 24 )
/* Logging shorthand.
*/
# define c3_log_every(n, args...) \
do { \
static c3_w cnt_w = 0; \
\
if ( 0 == cnt_w % (n) ) { \
uL(fprintf(uH, args)); \
} \
cnt_w = (cnt_w + 1) % (n); \
} while (0)
/* c3_malloc(): asserting malloc
*/
#define c3_malloc(s) ({ \
void* rut = malloc(s); \
if ( 0 == rut ) { \
c3_assert(!"memory lost"); \
} \
rut;})