ref: a0e26d4f40a3a63f9d33fd1a1f01e23a18ff7e27 dir: /src/timefuncs.h/
#pragma once double sec_realtime(void); u64int nanosec_monotonic(void); void timestr(double s, char *buf, int sz); double parsetime(const char *s); void sleep_ms(int ms);