Timestamp operator+(const Timestamp &left, const Timestamp &right) noexcept { // Use more good precision if (left.timebase() < right.timebase()) { auto ts = av_add_stable(left.timebase(), left.timestamp(), right.timebase(), right.timestamp()); return {ts, left.timebase()}; } else { auto ts = av_add_stable(right.timebase(), right.timestamp(), left.timebase(), left.timestamp()); return {ts, right.timebase()}; } }
int main(void) { AVRational a,b,r; for (a.num = -2; a.num <= 2; a.num++) { for (a.den = -2; a.den <= 2; a.den++) { for (b.num = -2; b.num <= 2; b.num++) { for (b.den = -2; b.den <= 2; b.den++) { int c = av_cmp_q(a,b); double d = av_q2d(a) == av_q2d(b) ? 0 : (av_q2d(a) - av_q2d(b)); if (d > 0) d = 1; else if (d < 0) d = -1; else if (d != d) d = INT_MIN; if (c != d) av_log(NULL, AV_LOG_ERROR, "%d/%d %d/%d, %d %f\n", a.num, a.den, b.num, b.den, c,d); r = av_sub_q(av_add_q(b,a), b); if(b.den && (r.num*a.den != a.num*r.den || !r.num != !a.num || !r.den != !a.den)) av_log(NULL, AV_LOG_ERROR, "%d/%d ", r.num, r.den); } } } } for (a.num = 1; a.num <= 10; a.num++) { for (a.den = 1; a.den <= 10; a.den++) { if (av_gcd(a.num, a.den) > 1) continue; for (b.num = 1; b.num <= 10; b.num++) { for (b.den = 1; b.den <= 10; b.den++) { int start; if (av_gcd(b.num, b.den) > 1) continue; if (av_cmp_q(b, a) < 0) continue; for (start = 0; start < 10 ; start++) { int acc= start; int i; for (i = 0; i<100; i++) { int exact = start + av_rescale_q(i+1, b, a); acc = av_add_stable(a, acc, b, 1); if (FFABS(acc - exact) > 2) { av_log(NULL, AV_LOG_ERROR, "%d/%d %d/%d, %d %d\n", a.num, a.den, b.num, b.den, acc, exact); return 1; } } } } } } } for (a.den = 1; a.den < 0x100000000U/3; a.den*=3) { for (a.num = -1; a.num < (1<<27); a.num += 1 + a.num/100) { float f = av_int2float(av_q2intfloat(a)); float f2 = av_q2d(a); if (fabs(f - f2) > fabs(f)/5000000) { av_log(NULL, AV_LOG_ERROR, "%d/%d %f %f\n", a.num, a.den, f, f2); return 1; } } } return 0; }
int main(void) { AVRational a,b,r; int i,j,k; static const int64_t numlist[] = { INT64_MIN, INT64_MIN+1, INT64_MAX, INT32_MIN, INT32_MAX, 1,0,-1, 123456789, INT32_MAX-1, INT32_MAX+1LL, UINT32_MAX-1, UINT32_MAX, UINT32_MAX+1LL }; for (a.num = -2; a.num <= 2; a.num++) { for (a.den = -2; a.den <= 2; a.den++) { for (b.num = -2; b.num <= 2; b.num++) { for (b.den = -2; b.den <= 2; b.den++) { int c = av_cmp_q(a,b); double d = av_q2d(a) == av_q2d(b) ? 0 : (av_q2d(a) - av_q2d(b)); if (d > 0) d = 1; else if (d < 0) d = -1; else if (d != d) d = INT_MIN; if (c != d) av_log(NULL, AV_LOG_ERROR, "%d/%d %d/%d, %d %f\n", a.num, a.den, b.num, b.den, c,d); r = av_sub_q(av_add_q(b,a), b); if(b.den && (r.num*a.den != a.num*r.den || !r.num != !a.num || !r.den != !a.den)) av_log(NULL, AV_LOG_ERROR, "%d/%d ", r.num, r.den); } } } } for (i = 0; i < FF_ARRAY_ELEMS(numlist); i++) { int64_t a = numlist[i]; for (j = 0; j < FF_ARRAY_ELEMS(numlist); j++) { int64_t b = numlist[j]; if (b<=0) continue; for (k = 0; k < FF_ARRAY_ELEMS(numlist); k++) { int64_t c = numlist[k]; int64_t res; AVInteger ai; if (c<=0) continue; res = av_rescale_rnd(a,b,c, AV_ROUND_ZERO); ai = av_mul_i(av_int2i(a), av_int2i(b)); ai = av_div_i(ai, av_int2i(c)); if (av_cmp_i(ai, av_int2i(INT64_MAX)) > 0 && res == INT64_MIN) continue; if (av_cmp_i(ai, av_int2i(INT64_MIN)) < 0 && res == INT64_MIN) continue; if (av_cmp_i(ai, av_int2i(res)) == 0) continue; // Special exception for INT64_MIN, remove this in case INT64_MIN is handled without off by 1 error if (av_cmp_i(ai, av_int2i(res-1)) == 0 && a == INT64_MIN) continue; av_log(NULL, AV_LOG_ERROR, "%"PRId64" * %"PRId64" / %"PRId64" = %"PRId64" or %"PRId64"\n", a,b,c, res, av_i2int(ai)); } } } for (a.num = 1; a.num <= 10; a.num++) { for (a.den = 1; a.den <= 10; a.den++) { if (av_gcd(a.num, a.den) > 1) continue; for (b.num = 1; b.num <= 10; b.num++) { for (b.den = 1; b.den <= 10; b.den++) { int start; if (av_gcd(b.num, b.den) > 1) continue; if (av_cmp_q(b, a) < 0) continue; for (start = 0; start < 10 ; start++) { int acc= start; int i; for (i = 0; i<100; i++) { int exact = start + av_rescale_q(i+1, b, a); acc = av_add_stable(a, acc, b, 1); if (FFABS(acc - exact) > 2) { av_log(NULL, AV_LOG_ERROR, "%d/%d %d/%d, %d %d\n", a.num, a.den, b.num, b.den, acc, exact); return 1; } } } } } } } for (a.den = 1; a.den < 0x100000000U/3; a.den*=3) { for (a.num = -1; a.num < (1<<27); a.num += 1 + a.num/100) { float f = av_int2float(av_q2intfloat(a)); float f2 = av_q2d(a); if (fabs(f - f2) > fabs(f)/5000000) { av_log(NULL, AV_LOG_ERROR, "%d/%d %f %f\n", a.num, a.den, f, f2); return 1; } } } return 0; }
Timestamp &Timestamp::operator+=(const Timestamp &other) { m_timestamp = av_add_stable(m_timebase, m_timestamp, other.timebase(), other.timestamp()); return *this; }