ref: 409a8dab1d8ef6cbd70b7c6b80c0ab8b7e9d2826 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);