usleep            107 gnulib-tests/test-stat-time.c       usleep (delay);
usleep            115 gnulib-tests/test-stat-time.c           usleep (delay);
usleep            123 gnulib-tests/test-stat-time.c   usleep (delay);
usleep             36 gnulib-tests/test-usleep.c   ASSERT (usleep (1000000) == 0);
usleep             39 gnulib-tests/test-usleep.c   ASSERT (usleep (0) == 0);
usleep             59 gnulib-tests/usleep.c   return usleep (micro % 1000000);