fiddle with failure threshold messages and comments

diff --git a/src/oping.c b/src/oping.c
index 0916788..37f5fa9 100644 (file)
--- a/src/oping.c
+++ b/src/oping.c
@@ -541,19 +541,20 @@ static int read_options (int argc, char **argv) /* {{{ */
                                set_opt_send_qos (optarg);
                                break;
 
-                        case 'Z':
+                       case 'Z':
                        {
                                char *endptr = NULL;
                                double tmp;
 
                                errno = 0;
                                tmp = strtod (optarg, &endptr);
-                               if ((errno != 0) || (endptr == NULL) || (*endptr != 0))
-                                       fprintf (stderr, "The \"-Z\" option requires a numeric argument.\n");
-                               else if ((tmp >= 0.0) && (tmp <= 100.0))
-                                       opt_exit_status_threshold = tmp / 100.0;
+                               if ((errno != 0) || (endptr == NULL) || (*endptr != 0) || (tmp < 0.0) || (tmp > 100.0))
+                               {
+                                       fprintf (stderr, "Ignoring invalid -Z argument: %s\n", optarg);
+                                       fprintf (stderr, "The \"-Z\" option requires a numeric argument between 0 and 100.\n");
+                               }
                                else
-                                       fprintf (stderr, "The argument of the \"-Z\" option must be between 0 and 100.\n");
+                                       opt_exit_status_threshold = tmp / 100.0;
 
                                break;
                        }
@@ -643,7 +644,7 @@ static int update_stats_from_context (ping_context_t *ctx) /* {{{ */
 
                average = context_get_average (ctx);
                deviation = context_get_stddev (ctx);
-                       
+
                mvwprintw (ctx->window, /* y = */ 2, /* x = */ 2,
                                "rtt min/avg/max/sdev = %.3f/%.3f/%.3f/%.3f ms",
                                ctx->latency_min,
@@ -971,13 +972,11 @@ static void update_host_hook (pingobj_iter_t *iter, /* {{{ */
 #endif
 } /* }}} void update_host_hook */
 
-/* returns the number of significant failures: sum over hosts of
-   unreturned packets exceeding 50% of the number sent, rounding up. */
+/* Returns the number of hosts which failed to return more than the
+        fraction opt_exit_status_threshold of pings */
 static int post_loop_hook (pingobj_t *ping) /* {{{ */
 {
        pingobj_iter_t *iter;
-       /* failures to report: sum over hosts of number of failed
-          returns above 50% */
        int failure_count = 0;
 
 #if USE_NCURSES
@@ -1318,9 +1317,9 @@ int main (int argc, char **argv) /* {{{ */
        ping_destroy (ping);
 
        if (status)
-         return (EXIT_FAILURE + status);
+               return (EXIT_FAILURE + status);
        else
-         return (EXIT_SUCCESS);
+               return (EXIT_SUCCESS);
 } /* }}} int main */
 
 /* vim: set fdm=marker : */