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115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/* include/c/defs.h
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**
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** This file is in the public domain.
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*/
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/** Random useful C macros.
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**/
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/* Assert. Good to capture.
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*/
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// # define c3_assert(x) assert(x)
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# define c3_assert(x) ( (x) ? 0 : c3_cooked(), assert(x) )
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/* Stub.
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*/
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# define c3_stub (assert(!"stub"), 0)
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/* Size in words.
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*/
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# define c3_wiseof(x) (((sizeof (x)) + 3) >> 2)
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/* Bit counting.
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*/
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#if 1
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# define c3_bits_word(w) ((w) ? (32 - __builtin_clz(w)) : 0)
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#else
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#ifdef C3_GLOBAL
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c3_y Bts_y[] = {
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0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8
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};
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#else
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extern c3_y Bts_y[];
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#endif
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# define c3_bits_byte(y) Bts_y[y]
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# define c3_bits_word(w) \
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( ((w) >> 24) \
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? (24 + Bts_y[(w) >> 24]) \
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: ((w) >> 16) \
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? (16 + Bts_y[(w) >> 16]) \
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: ((w) >> 8) \
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? (8 + Bts_y[(w) >> 8]) \
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: Bts_y[(w)] )
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#endif
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/* Min and max.
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*/
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# define c3_max(x, y) ( ((x) > (y)) ? (x) : (y) )
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# define c3_min(x, y) ( ((x) < (y)) ? (x) : (y) )
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/* Rotate.
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*/
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# define c3_rotw(r, x) ( ((x) << (r)) | ((x) >> (32 - (r))) )
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/* Emergency stdio fix.
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*/
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int
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c3_cooked();
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/* Short integers.
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*/
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# define c3_s1(a) ( (a) )
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# define c3_s2(a, b) ( ((b) << 8) | c3_s1(a) )
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# define c3_s3(a, b, c) ( ((c) << 16) | c3_s2(a, b) )
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# define c3_s4(a, b, c, d) ( ((d) << 24) | c3_s3(a, b, c) )
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# define c3_s5(a, b, c, d, e) \
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( ((uint64_t)c3_s1(e) << 32ULL) | c3_s4(a, b, c, d) )
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# define c3_s6(a, b, c, d, e, f) \
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( ((uint64_t)c3_s2(e, f) << 32ULL) | c3_s4(a, b, c, d) )
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# define c3_s7(a, b, c, d, e, f, g) \
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( ((uint64_t)c3_s3(e, f, g) << 32ULL) | c3_s4(a, b, c, d) )
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# define c3_s8(a, b, c, d, e, f, g, h) \
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( ((uint64_t)c3_s4(e, f, g, h) << 32ULL) | c3_s4(a, b, c, d) )
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/* Byte-order twiddling.
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*/
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# define c3_flip32(w) \
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( (((w) >> 24) & 0xff) \
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| (((w) >> 16) & 0xff) << 8 \
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| (((w) >> 8) & 0xff) << 16 \
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| ( (w) & 0xff) << 24 )
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/* Logging shorthand.
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*/
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# define c3_log_every(n, args...) \
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do { \
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static c3_w cnt_w = 0; \
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\
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if ( 0 == cnt_w % (n) ) { \
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uL(fprintf(uH, args)); \
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} \
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cnt_w = (cnt_w + 1) % (n); \
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} while (0)
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/* c3_malloc(): asserting malloc
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*/
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#define c3_malloc(s) ({ \
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void* rut = malloc(s); \
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if ( 0 == rut ) { \
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c3_assert(!"memory lost"); \
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} \
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rut;})
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