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/* ** Copyright UCAR (c) 1990 - 2016                                         */
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/* ** Boulder, Colorado, USA                                                 */
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/*************************************************************************
 * tu_sleep.c - utilities library
 *
 * sleeps in microseconds
 *
 * local implementation of the usleep function
 *
 * Mike Dixon RAP NCAR Boulder CO USA
 *
 * December 1990
 *
 * modified from code by Gerry Wiener
 *
 ***************************************************************************/

#include <toolsa/utim.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>

void tu_sleep(long usecs)

{

  struct timeval sleep_time;
  fd_set read_value;

  sleep_time.tv_sec = usecs / 1000000;
  sleep_time.tv_usec = usecs % 1000000;

  memset ((void *)  &read_value,
          (int) 0, (size_t)  (sizeof(fd_set)));

  select(0, &read_value, 0, 0, &sleep_time);

}