1 /* Copied from libc/posix/usleep.c, removed the check for HAVE_NANOSLEEP */
2 
3 /* Copyright (c) 2002 by Jeff Johnston */
4 
5 #include <picolibc.h>
6 
7 #include <errno.h>
8 #include <time.h>
9 #include <unistd.h>
10 
usleep(useconds_t useconds)11 int usleep(useconds_t useconds)
12 {
13     struct timespec ts;
14 
15     ts.tv_sec = (long int)useconds / 1000000;
16     ts.tv_nsec = ((long int)useconds % 1000000) * 1000;
17     if (!nanosleep(&ts,&ts)) return 0;
18     if (errno == EINTR) return ts.tv_sec;
19     return -1;
20 }
21