-static double context_get_stddev (ping_context_t *ctx) /* {{{ */
-{
- double num_total;
-
- if (ctx == NULL)
- return (-1.0);
-
- if (ctx->req_rcvd < 1)
- return (-0.0);
- else if (ctx->req_rcvd < 2)
- return (0.0);
-
- num_total = (double) ctx->req_rcvd;
- return (sqrt (((num_total * ctx->latency_total_square)
- - (ctx->latency_total * ctx->latency_total))
- / (num_total * (num_total - 1.0))));
-} /* }}} double context_get_stddev */
-