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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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typedef struct lat_long;
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struct lat_long
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{
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float latitude;
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float longitude;
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};
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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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// test de la fonction decode_int
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int decode_int(char c)
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{
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int res;
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if (c>='0' && c<='9')
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{
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res = c -'0';
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}
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else
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{
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return -1;
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}
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return res;
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}
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// compare la trame et le type.
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int trame_cmp(char * trame,char * type)
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{
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int i = 0, a = 0;
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for (i=0;i<5;i++)
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{
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if (trame[i+1] == type[i])
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{
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}
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else if ((trame[i+1] == '\0') || (type[i] == '\0') || (trame[i+1] == ','))
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{
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a = trame[i] - type[i];
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}
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else
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{
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a = trame[i+1] - type[i];
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}
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}
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if (a==0)
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{
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printf("la trame est %s",trame);
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return 1;
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}
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else
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{
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return 0;
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}
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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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printf ("> %s\n",trame);
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static int cpt=0 ;
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cpt++ ;
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}
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// r?alisation de la fonction decode_nombre
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int decode_nombre(char * ch, int nbr)
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{
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int i , b=0;
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for(i=0;i<nbr;i++)
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{
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b=10*b+decode_int(ch[i]);
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}
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return b;
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}
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// fonction conversion latitude en flottant
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float conver_latitude(char * ch)
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{
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float lat_s=0,lat_f=0,x=0,lat_s_2=0;
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int cpt=0,i=0,c=0,cpt_2=0;
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while(ch[i]!= '.')
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{
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i++;
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cpt++;
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}
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i=0;
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while(ch[i]!='\0')
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{
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i++;
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cpt_2++;
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}
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c=decode_nombre(ch,2);
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for(i=0;i<cpt;i++)
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{
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lat_s=10*lat_s+decode_int(ch[i]);
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}
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for(i=cpt+1;i<cpt_2;i++)
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{
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lat_s_2=lat_s_2*10+decode_int(ch[i]);
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}
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lat_s=lat_s+(lat_s_2/pow(10,cpt+1));
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lat_f= ((lat_s-c*pow(10,cpt-2))/60)+c;
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return lat_f;
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}
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// fonction conversion longitude en flottant
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float conver_longitude(char * ch)
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{
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float lat_s=0,lat_f=0,x=0,lat_s_2=0;
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int cpt=0,i=0,c=0,cpt_2=0;
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while(ch[i]!= '.')
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{
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i++;
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cpt++;
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}
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i=0;
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while(ch[i]!='\0')
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{
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i++;
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cpt_2++;
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}
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c=decode_nombre(ch,3);
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for(i=0;i<cpt;i++)
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{
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lat_s=10*lat_s+decode_int(ch[i]);
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}
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for(i=cpt+1;i<cpt_2;i++)
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{
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lat_s_2=lat_s_2*10+decode_int(ch[i]);
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}
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lat_s=lat_s+(lat_s_2/pow(10,cpt+1));
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lat_f= ((lat_s-c*pow(10,cpt-3))/60)+c;
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return lat_f;
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}
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//fonction regroupant la conversion latitude et la conversion longitude
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float latitude_longitude(char * ch)
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{
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int cpt=0;
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while(ch[cpt]!='\0')
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{
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cpt++;
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}
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if(cpt==10)
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{
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conver_longitude(ch);
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}
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else
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{
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conver_latitude(ch);
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}
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}
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int decode_trame(char * trame)
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{
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int cpt=66,i=0,j=0;
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float a=0, b=0;
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char lat[30],longi[30];
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if (trame_cmp(trame,"GPGGA"))
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{
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/*while(trame[cpt]!='\0')
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{
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cpt++;
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}*/
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for(i=cpt-49;i<=cpt-41;i++)
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{
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lat[j]=trame[i];
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j++;
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}
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j=0;
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for(i=cpt-37;i<=cpt-28;i++)
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{
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longi[j]=trame[i];
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j++;
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}
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a=conver_latitude(lat);
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b=conver_longitude(longi);
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printf("latitude = %f",a);
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printf("longitude = %f",b);
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return 1;
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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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if (5!=5){
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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("$GPGSV,3,2,10,15,03,077,,18,04,041,42,19,85,271,,20,08,214,*7C","GPGGA")!=0){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$GPDGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D","GPDGA")!=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("$GPGLL,4545.6424,N,00306.6036,E,141914.00,A*0E","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('A')!=(-1)){
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printf ("Erreur Test unitaire decode_int.\n");
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exit(-1);
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}
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if (decode_int('5')!= 5){
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printf ("Erreur Test unitaire decode_int.\n");
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exit(-1);
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}
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if (decode_nombre("7501.200",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 (conver_latitude("7501.20000")<0.95*75.02 || conver_latitude("7501.20000")>1.05*75.02){
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printf ("Erreur Test unitaire conver_latitude.\n");
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exit(-1);
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}
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if (conver_longitude("00306.6036")<0.95*3.11006 || conver_longitude("00306.6036")>1.05*3.11006 ){
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printf ("Erreur Test unitaire conver_longitude.\n");
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exit(-1);
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}
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if (latitude_longitude("7501.20000")<0.95*750.02 || latitude_longitude("7501.20000")>1.05*750.02 ){
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printf ("Erreur Test unitaire latitude_longitude.\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");
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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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