HelenOS sources

MSEC2USEC         131 uspace/lib/c/include/time.h #define MSEC2USEC(ms)	((ms) * 1000ll)
MSEC2USEC         131 uspace/lib/posix/include/libc/time.h #define MSEC2USEC(ms)	((ms) * 1000ll)
HelenOS homepage, sources at GitHub