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#include "internal.h"
static uint64
xoshiro256ss(Rng *state)
{
uint64 *s = state->s;
uint64 result = rol64(s[1] * 5, 7) * 9;
uint64 t = s[1] << 17;
s[2] ^= s[0];
s[3] ^= s[1];
s[1] ^= s[2];
s[0] ^= s[3];
s[2] ^= t;
s[3] = rol64(s[3], 45);
return result;
}
double
rng·random(void)
{
uint64 r = xoshiro256ss(&rng·RNG);
return (double)r / (double)UINT64_MAX;
}
uint64
rng·randi(int max)
{
uint64 r = xoshiro256ss(&rng·RNG);
return r % max;
}
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