Major refactor

ft_ping.h

@@ -1,9 +1,12 @@
 #pragma once
 
+
 #include <string.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <signal.h>
+#include <stdbool.h>
+#include <math.h>
 
 #include <sys/types.h>
 #include <sys/socket.h>
@@ -13,6 +16,8 @@
 #include <arpa/inet.h>
 #include <netdb.h>
 
+#define PACKET_SIZE 64
+
 struct icmp_header
 {
 	uint8_t type;
@@ -21,3 +26,19 @@ struct icmp_header
 	uint16_t id;
 	uint16_t seq;
 };
+
+struct packet_stats
+{
+	uint16_t	n_packet_sent;
+	uint16_t	n_packet_recv;
+	double		timestamp_array[65536];
+};
+
+uint16_t calculate_checksum(uint16_t *data, int len);
+double get_timestamp();
+struct in_addr get_addr_by_hostname(char *hostname);
+double get_stddev(double *timestamp_array);
+void fill_timestamp_array(struct packet_stats *sockstats, double time);
+double get_avg(double *timestamp_array);
+double get_min(double *timestamp_array);
+double get_max(double *timestamp_array);