91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
#include "ft_ping.h"
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uint16_t calculate_checksum(uint16_t *data, int len)
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{
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uint32_t checksum = 0;
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int i = 0;
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while (len > 1)
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{
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checksum += data[i++];
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len -= 2;
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}
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if (len == 1)
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checksum += ((uint8_t *)data)[i];
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while (checksum >> 16)
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checksum = (checksum & 0xFFFF) + (checksum >> 16);
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return (~checksum);
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}
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double get_timestamp()
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{
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struct timeval timestamp;
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gettimeofday(×tamp, NULL);
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return (timestamp.tv_sec + (double)timestamp.tv_usec / 1000000);
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}
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struct in_addr get_addr_by_hostname(char *hostname)
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{
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struct hostent *he;
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struct in_addr **addr_list;
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he = gethostbyname(hostname);
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addr_list = (struct in_addr **)he->h_addr_list;
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return (*addr_list[0]);
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}
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void fill_timestamp_array(struct packet_stats *stats, double time)
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{
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stats->timestamp_array[stats->n_packet_recv] = time;
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}
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double get_min(double *timestamp_array)
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{
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double min = timestamp_array[0];
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for (int i = 1; timestamp_array[i]; i++)
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{
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if (min > timestamp_array[i])
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min = timestamp_array[i];
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}
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return (min);
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}
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double get_max(double *timestamp_array)
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{
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double max = timestamp_array[0];
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for (int i = 1; timestamp_array[i]; i++)
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{
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if (max < timestamp_array[i])
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max = timestamp_array[i];
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}
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return (max);
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}
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double get_avg(double *timestamp_array)
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{
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double avg = 0;
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int i = 0;
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while (timestamp_array[i])
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{
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avg += timestamp_array[i];
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i++;
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}
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return (avg /= i);
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}
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double get_stddev(double *timestamp_array)
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{
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float avg = get_avg(timestamp_array);
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float variance = 0;
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float variance_tmp;
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for (int i = 0; timestamp_array[i]; i++)
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{
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variance_tmp = timestamp_array[i] - avg;
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variance += variance_tmp * variance_tmp;
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}
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return (sqrt(variance));
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} |