Kernel#sleep
But when `MRB_WITHOUT_FLOAT` is set, there's no way to sleep for sub seconds. So mruby specific `usleep` is provided.
Sleep
mruby-sleep
* Method implementation functions made `static`. * Function declaration style has been changed. * Unnecessary header file `mrb_sleep.h` removed. * Used `mrb_get_args()` instead of self parsing. * Indentation kept untouched.