From b96652f9a4ed92dd3a7db319aa70431c48096a76 Mon Sep 17 00:00:00 2001
From: tomoron <tomoron@student.42angouleme.fr>
Date: Fri, 2 May 2025 23:57:11 +0200
Subject: [PATCH] fix compilation error and fix stddev calculation

---
 Makefile       | 4 ++--
 srcs/ft_ping.c | 4 +++-
 srcs/stats.c   | 8 +++-----
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/Makefile b/Makefile
index 387145e..0fbee48 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 NAME = ft_ping
 CC=cc
-FLAGS=-Werror -Wextra -Wall -g -Wno-unused-result -lm
+FLAGS=-Werror -Wextra -Wall -g -Wno-unused-result
 
 SRCS_DIR = srcs
 OBJS_DIR = .objs
@@ -18,7 +18,7 @@ OBJS = $(addprefix $(OBJS_DIR)/,$(SRCS:.c=.o))
 all: $(NAME)
 
 $(NAME): $(OBJS_DIR) $(OBJS)
-	$(CC) $(FLAGS) $(OBJS) -o $@
+	$(CC) $(FLAGS) $(OBJS) -o $@ -lm
 
 $(OBJS_DIR):
 	mkdir $(OBJS_DIR)
diff --git a/srcs/ft_ping.c b/srcs/ft_ping.c
index e72b255..cafd078 100644
--- a/srcs/ft_ping.c
+++ b/srcs/ft_ping.c
@@ -6,7 +6,7 @@
 /*   By: tomoron <tomoron@student.42angouleme.fr>   +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/04/26 19:54:25 by tomoron           #+#    #+#             */
-/*   Updated: 2025/05/02 01:04:29 by tomoron          ###   ########.fr       */
+/*   Updated: 2025/05/02 23:55:50 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -50,6 +50,8 @@ void ping_end_print(t_settings *set, char *host, t_stats *stats)
 
 	(void)set;
 	stddev = sqrt(stats->sqr_diff / (stats->received - 1));
+	if(isnan(stddev) || isinf(stddev))
+		stddev = 0.0f;
 	printf("--- %s ping statistics ---\n", host);
 	percent = ((double)stats->sent / 100) * stats->received;
 	printf("%lu packets transmitted, %lu packets received, %d%% packet loss\n", stats->sent, stats->received, percent);
diff --git a/srcs/stats.c b/srcs/stats.c
index ac4e47e..5956949 100644
--- a/srcs/stats.c
+++ b/srcs/stats.c
@@ -6,7 +6,7 @@
 /*   By: tomoron <tomoron@student.42angouleme.fr>   +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/05/01 17:41:42 by tomoron           #+#    #+#             */
-/*   Updated: 2025/05/02 01:03:15 by tomoron          ###   ########.fr       */
+/*   Updated: 2025/05/02 23:53:28 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,15 +18,13 @@ void update_stats(t_stats *stats, double time)
 
 	stats->received++;				
 	tmp = 0;
-	if(stats->prev)
-		tmp = time - stats->avg;
+	tmp = time - stats->avg;
 	stats->min = MIN(stats->min, time);
 	if(stats->min == 0)
 		stats->min = time;
 	stats->max = MAX(stats->max, time);
 	stats->avg += (time - stats->avg) / stats->received;
-	if(stats->prev)
-		stats->sqr_diff += tmp * stats->avg;
+	stats->sqr_diff += tmp * stats->avg;
 	stats->prev = time;
 }