ref: 70246f96c1b3c628b758e6d6939e0a7c9a71d481 dir: /src/timefuncs.h/
#pragma once double sec_realtime(void); uint64_t nanosec_monotonic(void); void timestring(double s, char *buf, int sz); double parsetime(const char *s); void sleep_ms(int ms);