newlib/libc/posix/usleep.c

   1 /* libc/posix/usleep.c - usleep function */
   2
   3 /* Written 2002 by Jeff Johnston */
   4
   5 #ifdef HAVE_NANOSLEEP
   6
   7 #include <errno.h>
   8 #include <time.h>
   9 #include <unistd.h>
  10
  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     return -1;
  19 }
  20
  21 #endif