#ifndef TAIA_H #define TAIA_H #include #include #include #include #include "rnd.h" struct tai { uint64_t x; }; struct taia { struct tai sec; uint32_t nano; uint32_t atto; }; static inline void tai_pack(unsigned char *s, struct tai *t) { uint64_t x; x = t->x; s[7] = x & 255; x >>= 8; s[6] = x & 255; x >>= 8; s[5] = x & 255; x >>= 8; s[4] = x & 255; x >>= 8; s[3] = x & 255; x >>= 8; s[2] = x & 255; x >>= 8; s[1] = x & 255; x >>= 8; s[0] = x; } static inline void tai_unpack(unsigned char *s, struct tai *t) { uint64_t x; x = (unsigned char) s[0]; x <<= 8; x += (unsigned char) s[1]; x <<= 8; x += (unsigned char) s[2]; x <<= 8; x += (unsigned char) s[3]; x <<= 8; x += (unsigned char) s[4]; x <<= 8; x += (unsigned char) s[5]; x <<= 8; x += (unsigned char) s[6]; x <<= 8; x += (unsigned char) s[7]; t->x = x; } static inline void taia_pack(unsigned char *s, struct taia *t) { unsigned long x; tai_pack(s, &t->sec); s += 8; x = t->atto; s[7] = x & 255; x >>= 8; s[6] = x & 255; x >>= 8; s[5] = x & 255; x >>= 8; s[4] = x; x = t->nano; s[3] = x & 255; x >>= 8; s[2] = x & 255; x >>= 8; s[1] = x & 255; x >>= 8; s[0] = x; } static inline void taia_unpack(unsigned char *s, struct taia *t) { unsigned long x; tai_unpack(s, &t->sec); s += 8; x = (unsigned char) s[4]; x <<= 8; x += (unsigned char) s[5]; x <<= 8; x += (unsigned char) s[6]; x <<= 8; x += (unsigned char) s[7]; t->atto = x; x = (unsigned char) s[0]; x <<= 8; x += (unsigned char) s[1]; x <<= 8; x += (unsigned char) s[2]; x <<= 8; x += (unsigned char) s[3]; t->nano = x; } #define tai_unix(t, u) \ ((void) ((t)->x = 4611686018427387914ULL + \ (uint64_t) (u))) static inline void taia_now(struct taia *t) { struct timeval now; gettimeofday(&now, NULL); tai_unix(&t->sec, now.tv_sec); t->nano = 1000 * now.tv_usec + 500; /* We don't really have it, but bring some noise in. */ t->atto = secrand(); } static inline void taia_sub(struct taia *res, const struct taia *u, const struct taia *v) { unsigned long unano = u->nano; unsigned long uatto = u->atto; res->sec.x = u->sec.x - v->sec.x; res->nano = unano - v->nano; res->atto = uatto - v->atto; if (res->atto > uatto) { res->atto += 1000000000UL; --res->nano; } if (res->nano > unano) { res->nano += 1000000000UL; --res->sec.x; } } static inline void taia_add(struct taia *res, const struct taia *u, const struct taia *v) { res->sec.x = u->sec.x + v->sec.x; res->nano = u->nano + v->nano; res->atto = u->atto + v->atto; if (res->atto > 999999999UL) { res->atto -= 1000000000UL; ++res->nano; } if (res->nano > 999999999UL) { res->nano -= 1000000000UL; ++res->sec.x; } } static inline int taia_less(const struct taia *t, const struct taia *u) { if (t->sec.x < u->sec.x) return 1; if (t->sec.x > u->sec.x) return 0; if (t->nano < u->nano) return 1; if (t->nano > u->nano) return 0; return t->atto < u->atto; } extern bool taia_looks_good(struct taia *arr_taia, struct taia *pkt_taia); #endif /* TAIA_H */ ude/drm/drm_edid.h
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