44 if (c <= 0 || b < 0 || rnd == 4 || rnd > 5)
47 if (a < 0 && a != INT64_MIN)
55 if (b <= INT_MAX && c <= INT_MAX) {
57 return (a * b + r) / c;
59 return a / c * b + (a % c * b +
r) / c;
61 uint64_t a0 = a & 0xFFFFFFFF;
62 uint64_t a1 = a >> 32;
63 uint64_t b0 = b & 0xFFFFFFFF;
64 uint64_t b1 = b >> 32;
65 uint64_t t1 = a0 * b1 + a1 * b0;
66 uint64_t t1a = t1 << 32;
70 a1 = a1 * b1 + (t1 >> 32) + (a0 < t1a);
74 for (i = 63; i >= 0; i--) {
75 a1 += a1 + ((a0 >> i) & 1);
94 int64_t
b = bq.
num * (int64_t)cq.
den;
95 int64_t c = cq.
num * (int64_t)bq.
den;
106 int64_t
a = tb_a.
num * (int64_t)tb_b.
den;
107 int64_t
b = tb_b.
num * (int64_t)tb_a.
den;
117 int64_t c = (a -
b) & (mod - 1);
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Round to nearest and halfway cases away from zero.
int64_t av_gcd(int64_t a, int64_t b)
Return the greatest common divisor of a and b.
Libavutil version macros.
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare 2 timestamps each in its own timebases.
int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq, enum AVRounding rnd)
Rescale a 64-bit integer by 2 rational numbers with specified rounding.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
rational number numerator/denominator
int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod)
Compare 2 integers modulo mod.