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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include "trame.h"
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//Trames de tests ? modifier si n?cessaire.
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char * trames[]= {"$GPGSV,3,2,10,15,03,077,,18,04,041,42,19,85,271,,20,08,214,*7C",
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"$GPGSV,3,3,10,22,39,053,50,28,15,320,*7E",
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"$GPRMC,141914.00,A,4545.6424,N,00306.6036,E,0.4,99.4,010206,,*0C",
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"$GPGLL,4545.6424,N,00306.6036,E,141914.00,A*0E",
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"$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",
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"$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39",
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"$GPVTG,99.4,T,,M,0.4,N,0.7,K*57",
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"$GPZDA,141914.00,01,02,2006,00,00*69",
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0};
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typedef struct {
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float latitude;
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float longitude;
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}Position;
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Position p, p1, p2, p3;
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typedef struct {
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Position zpos;
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float vitMax;
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}Zone;
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Zone zones[] = {
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{{44.7887762, -3.012}, 50}, //Descripteur de la premiere zone
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{{44.7891220, -3.013}, 70}
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};
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int trame_cmp(char *trame, char *type)
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{
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int i=0, res=1;
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do
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{
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if (trame[i+1]==type[i])
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{
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i++;
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}
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else res=0;
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}while ((type[i]!='\0')&&(res==1));
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return (res);
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}
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int decode_int (char c)
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{
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int valeur;
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valeur = c-48;
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if ((valeur > 9) || (valeur < 0)) return (-1);
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else return(valeur);
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}
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int decode_nombre (char* ch, int n)
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{
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int i;
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int S=0;
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for (i=0;i<n;i++)
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{
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S=(S*10) + decode_int(ch[i]);
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}
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return S;
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}
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float conv_sexa_decimal(char* chaine){
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int i=0, degre=0, minutes=0, u=1, n=0;
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float secondes=0, res=0, min=0;
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do{
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n++;
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}while(chaine[n]!='.');
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if(n==4){
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degre=(chaine[0]-48)*10+(chaine[1]-48);
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i=2;
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}
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else{
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degre=(chaine[0]-48)*100+(chaine[1]-48)*10+(chaine[2]-48);
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i=3;
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}
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do{
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min=min+(chaine[i]-48)*pow(10, u);
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u--;
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i++;
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}while(chaine[i]!='.');
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i++;
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do{
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secondes=secondes+(chaine[i]-48)*pow(10, u);
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u--;
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i++;
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}while(chaine[i]!='\0');
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res=degre+((min+secondes)/60);
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return res;
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}
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void decode_trame(char *trame, Position *p) {
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int i = 17, cmpt = 0; //debut codage latitude caractere 17 de la trame
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char lat[10], lon[10];
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do {
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lat[cmpt] = trame[i];
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i++;
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cmpt++;
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} while (trame[i] != ',');
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cmpt = 0;
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i = 29; //debut codage longitude caractere 29 de la trame
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do {
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lon[cmpt] = trame[i];
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i++;
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cmpt++;
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} while (trame[i] != ',');
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(*p).latitude = conv_sexa_decimal(lat);
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(*p).longitude = conv_sexa_decimal(lon);
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}
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float calcule_distance(Position p1, Position p2){
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float x, y, dist;
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//Pythagore
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x=(p2.longitude - p1.longitude)*cos((p2.latitude + p1.latitude)/2);
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y=(p2.latitude - p1.latitude);
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dist = (sqrt((x*x)+(y*y)))*1.852*60; //*1.852*60 -> km
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return dist;
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}
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float calcule_vitesse(Position p1, Position p2) {
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float vit;
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vit = calcule_distance(p1, p2) * 3600; //*3600 -> km/h, v=d/t
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return vit;
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}
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int distance_a_la_plus_proche_zone(Position p, Zone z[], int nb_zones, float *dist) {
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int i, size_z;
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*dist = calcule_distance(p, z[0].zpos); //distance entre Position et la position de la zone dangereuse
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nb_zones = 0;
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size_z = sizeof(*z);
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for(i=1;i<size_z;i++) {
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if ( calcule_distance(p, z[i].zpos) < *dist ) {
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*dist = calcule_distance(p, z[i].zpos);
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nb_zones = i;
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}
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}
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return nb_zones;
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}
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//Fonction ? modifier !!!!!
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void traitement(char * trame)
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{
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static int cpt=0;
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float v, d;
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int nb_zones, alarme = 0, dist_seuil = 5, dist;
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//printf("%s\n", alarme);
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cpt++;
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if (trame_cmp(trame,"GPGGA")==1)
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{
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decode_trame(trame, &p);
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printf ("> %s\n",trame);
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v = calcule_vitesse(p, p1);
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dist = distance_a_la_plus_proche_zone(p, zones, nb_zones, &d);
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if ((dist < dist_seuil) && (v > zones[dist].vitMax)){
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alarme = 1;
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if (alarme == 1) printf ("Alarme : ON\n");
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printf ("ATTENTION vous roulez a %f, la chaussee est limite a %f.\n", v, zones[dist].vitMax);
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alarme = 0;
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}
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else {
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if (alarme == 0) printf ("Alarme : OFF\n");
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printf ("Vous roulez a %f.\n", v);
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}
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p = p1;
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//printf("long : %f, lat : %f\n", p.longitude, p.latitude);
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}
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}
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//Ajouter vos tests unitaires dans cette fonction.
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void tests_unitaires(void){
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float x, y, a, b, d, v, dz;
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int nb_zones;
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if (5!=5){
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printf ("Erreur Test unitaire basique.\n");
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exit(-1);
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}
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if (trame_cmp("$GPGGA suite chaine","GPGGA")!=1){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$GPRMC suite chaine","GPGGA")!=0){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$GPRMC ...","GPRMC")!=1){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$APRMC ...","GPGGA")!=0){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (((decode_int(9)) || (decode_int(8)) || (decode_int(7)) || (decode_int(6)) || (decode_int(5)) || (decode_int(4)) || (decode_int(3)) || (decode_int(2)) || (decode_int(1)) || (decode_int(0))) == (-1)){
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printf("Erreur Test unitaire decodeur_int.\n");
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exit(-1);
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}
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if (decode_nombre("7541",2)!=75){
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printf ("Erreur Test unitaire decode_nombre.\n");
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exit(-1);
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}
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if (decode_nombre("327",3)!=327){
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printf ("Erreur Test unitaire decode_nombre.\n");
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exit(-1);
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}
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x = 37.387458 - conv_sexa_decimal("3723.2475");
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y = 3.11006 - conv_sexa_decimal("00306.6036");
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if (x > 0.000001){
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printf ("Erreur Test unitaire conv_sexa_decimal.\n");
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exit(-1);
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}
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if (y > 0.000001){
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printf ("Erreur Test unitaire conv_sexa_decimal.\n");
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exit(-1);
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}
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decode_trame("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",&p);
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a= 3.110061 - p.longitude;
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b= 45.75 - p.latitude;
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if ((a > 0.000001) && (b > 0.000001)) {
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printf("Erreur Test unitaire decode_trame.\n");
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exit(-1);
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}
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decode_trame("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75",&p);
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a= 3.110066 - p.longitude;
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b= 45.750403 - p.latitude;
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if ((a > 0.000001) && (b > 0.000001)) {
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printf("Erreur Test unitaire decode_trame.\n");
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exit(-1);
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}
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decode_trame("$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73",&p);
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a= 3.110066 - p.longitude;
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b= 45.751209 - p.latitude;
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if ((a > 0.000001) && (b > 0.000001)) {
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printf("Erreur Test unitaire decode_trame.\n");
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exit(-1);
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}
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decode_trame("$GPGGA,141918.00,4545.0968,N,00306.6034,E,1,05,3.4,498.8,M,,M,,*7A",&p);
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a= 3.110057 - p.longitude;
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b= 45.751614 - p.latitude;
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if ((a > 0.000001) && (b > 0.000001)) {
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printf("Erreur Test unitaire decode_trame.\n");
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exit(-1);
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}
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decode_trame("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*79",&p1);
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decode_trame("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75",&p2);
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d = 0.044932 - calcule_distance(p1, p2);
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if (d > 0.000001) {
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printf("Erreur Test unitaire calcule_distance.\n");
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exit(-1);
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}
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v = 161.756485 - calcule_vitesse(p1, p2);
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if (v > 0.000001) {
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printf("Erreur Test unitaire calcule_vitesse.\n");
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exit(-1);
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}
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decode_trame("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75", &p3);
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if (distance_a_la_plus_proche_zone(p3, zones, nb_zones, &dz) != 1 ) {
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printf("Erreur Test unitaire distance_a_la_plus_proche_zone.\n");
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exit(-1);
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}
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}
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// Ne pas modifier cette fonction
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int main(int argc,char ** argv)
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{
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tests_unitaires();
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// Affichage des trames definies dans la table trames.
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printf ("Trames de tests tableau trames:\n");
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int i=0;
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while (trames[i])
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traitement(trames[i++]);
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if (!trame_init())
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exit(-1);
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// Affichage des trames du fichier gps.log
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char *trame;
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printf ("Trames de tests du fichier gps.log\n");
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while ((trame = trame_suivante()))
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traitement(trame);
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return 0;
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}
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