--- tail.c	Thu Apr 11 21:05:28 2002
+++ tail.c.NEW	Thu Apr 11 21:06:39 2002
@@ -170,8 +170,8 @@
 /* The number of seconds to sleep between iterations.
    During one iteration, every file name or descriptor is checked to
    see if it has changed.  */
-/* FIXME: allow fractional seconds */
-static unsigned int sleep_interval = 1;
+/* sleep interval defaults to 1,000,000 microseconds */
+static unsigned long sleep_interval = 1000000;
 
 /* The process ID of the process (presumably on the current host)
    that is writing to all followed files.  */
@@ -921,7 +921,7 @@
 	{
 	  if (writer_is_dead)
 	    break;
-	  sleep (sleep_interval);
+	  usleep (sleep_interval);
 
 	  /* Once the writer is dead, read the files once more to
 	     avoid a race condition.  */
@@ -1408,14 +1408,14 @@
 	case 's':
 	  {
 	    strtol_error s_err;
-	    unsigned long int tmp_ulong;
-	    s_err = xstrtoul (optarg, NULL, 10, &tmp_ulong, "");
-	    if (s_err != LONGINT_OK || tmp_ulong > UINT_MAX)
+	    double tmp_d;
+	    s_err = xstrtod (optarg, NULL, &tmp_d);
+	    if (s_err != LONGINT_OK || (unsigned long) (tmp_d*1000000.0) > UINT_MAX)
 	      {
 		error (EXIT_FAILURE, 0,
 		       _("%s: invalid number of seconds"), optarg);
 	      }
-	    sleep_interval = tmp_ulong;
+	    sleep_interval = (unsigned long) (tmp_d*1000000.0);
 	  }
 	  break;