static int openXMGrace(cvodeData_t *data)
{
double maxY;
/* Open XMGrace */
if ( !GraceIsOpen() ) {
GraceRegisterErrorFunction(grace_error);
/* Start Grace with a buffer size of 2048 and open the pipe */
if ( GraceOpen(2048) == -1 ) {
fprintf(stderr, "Can't run Grace. \n");
return 1;
}
else if ( GraceIsOpen() ) {
maxY = 1.0;
/*
"with g%d" might become useful, when printing multiple
graphs into one XMGrace subprocess.
*/
/* GracePrintf("with g%d", data->results->xmgrace); */
GracePrintf("world xmax %g", data->currenttime);
GracePrintf("world ymax %g", 1.25*maxY);
GracePrintf("xaxis tick major %g", data->currenttime/10);
/* GracePrintf("xaxis tick minor %d", (int) data->currenttime/100); */
GracePrintf("yaxis tick major %g", (1.25*maxY)/12.5 );
GracePrintf("xaxis label font 4");
GracePrintf("xaxis label \"time\"");
GracePrintf("xaxis ticklabel font 4");
GracePrintf("xaxis ticklabel char size 0.7");
GracePrintf("yaxis label font 4");
GracePrintf("yaxis label \"concentration\"");
GracePrintf("yaxis ticklabel font 4");
GracePrintf("yaxis ticklabel char size 0.7");
if ( Model_isSetName(data->model->simple) )
GracePrintf("subtitle \"%s\"", Model_getName(data->model->simple));
else if ( Model_isSetId(data->model->simple) )
GracePrintf("subtitle \"%s\"", Model_getId(data->model->simple));
else
GracePrintf("subtitle \"model has no name/id\"");
GracePrintf("subtitle font 8");
}
}
else {
fprintf(stderr, "Please close XMGrace first.\n");
return 1;
}
return 0;
}
void ScanGraceinit(){
/* set up to plot data for all channels, different color
for upper and lower thresholds and sca1 and sca2.
*/
int i,j;
char str1[256];
#ifdef DEBUG
printf("entering ScanGraceinit()\n");
#endif
if (GraceIsOpen()) GraceClose();
GraceOpen(32768);
GracePrintf("page size 450,350");
GracePrintf("arrange(2,2,0.1,0.1,0.1)");
GracePrintf("redraw");
for(j=0;j<4;j++){
sprintf(str1,"g%i on",j);
GracePrintf(str1);
sprintf(str1,"focus g%i",j);
GracePrintf(str1);
GracePrintf("xaxis ticklabel char size 0.6");
GracePrintf("yaxis ticklabel char size 0.6");
for(i=0;i<NPLT;i++){
sprintf(str1,"g%i.s%i symbol %i",j,i,j+1);
GracePrintf(str1);
}
}
#ifdef DEBUG
printf("leaving ScanGraceinit()\n");
#endif
}
void FitGraceinit(){
/* set up to plot edge position vs edge width for all channels, different color
for upper and lower thresholds and sca1 and sca2.
*/
int j;
char str1[256];
if(GraceIsOpen()){
GraceClose();
}
GraceOpen(32768);
GracePrintf("page size 500,400");
GracePrintf("redraw");
GracePrintf("g0 on");
GracePrintf("focus g0");
GracePrintf("xaxis ticklabel char size 0.6");
GracePrintf("yaxis ticklabel char size 0.6");
for(j=0;j<4;j++){
sprintf(str1,"s%i on",j);
GracePrintf(str1);
sprintf(str1,"s%i symbol %i",j,j+1);
GracePrintf(str1);
sprintf(str1,"s%i line type 0",j);
GracePrintf(str1);
}
#ifdef DEBUG
printf("leaving FitGraceinit()\n");
#endif
}
void grace_draw_plot (int npoints, Array x, Array y, char *yname, char *timestr, char *legend,
double xmin, double xmax, double ymin, double ymax)
{
int i;
int xxlen=npoints;
char xstr[128], ystr[128];
// Note grSets is now the index of this plot set.
// Will be incremented at the end to indicate the number of sets drawn
if (!grInited) {
fprintf (stderr, "Error: grace draw was called before init\n");
return;
}
// printf("grace_draw_plot %d: %s\n", grSets, yname);
// printf(" x: %lf - %lf\n y: %lf - %lf\n",
// xmin, xmax, ymin, ymax);
// If the whole data is undefined, do not produce image (would be empty)
if ( Array_is_data_undef_all(y) ) {
printf("All data is undef for this variable: %s %s\n", yname, timestr);
return;
}
// recalc min/max
if (xmin < grXMin) grXMin = xmin;
if (xmax > grXMax) grXMax = xmax;
if (ymin < grYMin) grYMin = ymin;
if (ymax > grYMax) grYMax = ymax;
if (!grSubtitleGiven)
GracePrintf("subtitle \"T=%s, [%6.2le:%6.2le],[%6.2le:%6.2le]\"",timestr,xmin,xmax,ymin,ymax);
for (i = 0; i < xxlen && GraceIsOpen(); i++) {
Array_strvalue(x, i, xstr);
Array_strvalue(y, i, ystr);
GracePrintf("g0.s%d point %s, %s",grSets,xstr,ystr);
}
GracePrintf("s%d line linewidth 4.0", grSets);
GracePrintf("s%d line color %d", grSets, grSets%15+1);
if (legend != NULL)
GracePrintf("s%d legend \"%s\"", grSets, legend);
//GracePrintf("redraw");
//GracePrintf("print to \"i%d.png\"",grSets);
//GracePrintf("print");
grSets++;
}
void grace_save_plot (char *outputpath, bool save_to_agr)
{
int i;
double yedge, xedge; // 2% of the ymax-ymin, xmax-xmin, resp.
if (!grInited)
return; // silently, so no warning if only 2D plots were done in main
//printf("grace_save_plot: %s\n", outputpath);
if (grSets > 0) {
// draw the graphs now (if we have any data)
// add 2% edge to the min/max values
yedge = (grYMax-grYMin)*0.02;
xedge = (grXMax-grXMin)*0.02;
// if function is constant, yedge is zero and plot would be empty
if (yedge == 0) yedge = grYMax/2.0 + 0.55;
//printf("\n x: %lf - %lf\n y: %lf - %lf\n xedge: %lf\n yedge: %lf\n",
// grXMin, grXMax, grYMin, grYMax, xedge, yedge);
//GracePrintf("autoscale");
GracePrintf("world xmin %le", grXMin-xedge);
GracePrintf("world xmax %le", grXMax+xedge);
GracePrintf("world ymin %le", grYMin-yedge);
GracePrintf("world ymax %le", grYMax+yedge);
GracePrintf("autoticks");
GracePrintf("redraw");
}
//if (save_to_png) {
GracePrintf("print to \"%s.png\"",outputpath);
GracePrintf("print");
if (print_provenance)
printf("--ProvenanceInfo name=\"%s.png\" size=0 date=0\n", outputpath);
//}
if (GraceIsOpen() && save_to_agr) {
/* Tell Grace to save the data */
GracePrintf("saveall \"%s.agr\"",outputpath);
}
// clear plot (for next init, draws, save cycle)
for (i=0; i<grSets; i++) {
GracePrintf("kill g0.s%d", i);
}
grInited = false;
}
void grace_plot (char *outputpath, char *title, char *subtitle, char *xname, char *yname,
int npoints, Array x, Array y, char *timestr,
double xmin, double xmax, double ymin, double ymax,
bool save_to_agr) {
int i;
double yedge, xedge; // 2% of the ymax-ymin, xmax-xmin, resp.
int xxlen=npoints;
char xstr[128], ystr[128];
if (!grace_started) grace_start();
// If the whole data is undefined, do not produce image (would be empty)
if ( Array_is_data_undef_all(y) ) {
printf("All data is undef for this variable: %s %s\n", yname, timestr);
return;
}
// now just plot these in grace!
yedge = (ymax-ymin)*0.02;
xedge = (xmax-xmin)*0.02;
// if function is constant, yedge is zero and plot would be empty
if (yedge == 0) yedge = ymax/2.0 + 0.55;
//printf("\n x: %lf - %lf\n y: %lf - %lf\n xedge: %lf\n yedge: %lf\n",
// xmin, xmax, ymin, ymax, xedge, yedge);
/* Send some initialization commands to Grace */
GracePrintf("device \"PNG\" OP \"compression:9\"");
//GracePrintf("device \"JPEG\" OP \"quality:50\"");
GracePrintf("hardcopy device \"PNG\"");
//GracePrintf("hardcopy device \"JPEG\"");
//GracePrintf("page size 360,300");
GracePrintf("page size %d,%d", grimgSizeX, grimgSizeY);
/* GracePrintf("xaxis tick off"); */
/* GracePrintf("yaxis tick off"); */
/* GracePrintf("xaxis ticklabel off"); */
/* GracePrintf("yaxis ticklabel off"); */
/*GracePrintf("view 0.137821, 0.051282, 1.157051, 0.868590");*/
GracePrintf("view 0.15, 0.051282, 1.157051, 0.868590");
/* GracePrintf("s0 on"); */
/* GracePrintf("s0 symbol 1"); */
/* GracePrintf("s0 symbol size 0.3"); */
/* GracePrintf("s0 symbol fill pattern 1"); */
/* GracePrintf("s1 on"); */
/* GracePrintf("s1 symbol 1"); */
/* GracePrintf("s1 symbol size 0.3"); */
/* GracePrintf("s1 symbol fill pattern 1"); */
GracePrintf("title size 1.4");
GracePrintf("xaxis ticklabel char size 1.36");
GracePrintf("yaxis ticklabel char size 1.36");
GracePrintf("title \"%s\"",title);
if (subtitle)
GracePrintf("subtitle \"%s\"",subtitle);
else
GracePrintf("subtitle \"T=%s, [%6.2le:%6.2le],[%6.2le:%6.2le]\"",timestr,xmin,xmax,ymin,ymax);
//GracePrintf("xaxis label \"%s\"",xname);
//GracePrintf("yaxis label \"%s\"",yname);
GracePrintf("map color 0 to (%d,%d,%d), \"background\"",
grBackgroundRGB[0], grBackgroundRGB[1], grBackgroundRGB[2]);
GracePrintf("map color 1 to (%d,%d,%d), \"foreground\"",
grForegroundRGB[0], grForegroundRGB[1], grForegroundRGB[2]);
GracePrintf("background color 0");
for (i = 0; i < xxlen && GraceIsOpen(); i++) {
Array_strvalue(x, i, xstr);
Array_strvalue(y, i, ystr);
GracePrintf("g0.s0 point %s, %s",xstr,ystr);
}
//GracePrintf("autoscale");
GracePrintf("world xmin %le", xmin-xedge);
GracePrintf("world xmax %le", xmax+xedge);
GracePrintf("world ymin %le", ymin-yedge);
GracePrintf("world ymax %le", ymax+yedge);
GracePrintf("autoticks");
GracePrintf("s0 line linewidth 4.0");
GracePrintf("xaxis tick major linewidth 3.0");
GracePrintf("yaxis tick major linewidth 3.0");
GracePrintf("frame linewidth 2.0");
GracePrintf("xaxis bar linewidth 3.0");
GracePrintf("redraw");
//if (save_to_png) {
GracePrintf("print to \"%s.png\"",outputpath);
GracePrintf("print");
if (print_provenance)
printf("--ProvenanceInfo name=\"%s.png\" size=0 date=0\n", outputpath);
//}
if (GraceIsOpen() && save_to_agr) {
/* Tell Grace to save the data */
GracePrintf("saveall \"%s.agr\"",outputpath);
}
GracePrintf("kill g0.s0");
}
int main(int argc, char** argv)
{
//reading data values
int fd;
int ctr_numhits=0;
int num_records=0;
ssize_t numbytes;
int compare = 1;
off_t offset = 0;
char error_buf[ERROR_BUF_SIZE];
int headersize=DR_HEAER_SIZE;
int next_buffer_size=1;
int datasize=next_buffer_size;
char *header = (char *) malloc(DR_HEAER_SIZE);
char *data = (char *) malloc(MAX_DATA_SIZE);
//plotting variables
int maxbin = 0;
int maxvalue = 0;
int xmax = (int) BINS;
//data values
int finebin = 0 ;
int bytesread = 1;
int value;
int pfb_bin = 0;
int fft_bin = 0;
int fft_bin_loc= 0;
int over_thresh = 0;
int blank = 0;
int event = 0;
unsigned int pfb_fft_power = 0;
unsigned int fields;
long int i = 0;
int j = 0;
int k = 0;
int ctr = 0;
int counter=0;
int beamnum = 0;
double fstep,fscoarse = 0.0;
double rfmin,rfctr = 0.0;
double freq_fft_bin = 0.0;
double bary_freq = 0.0;
char rawfile[] = "largefile_MMMDDYYYY_HHMM";
int gooddata=1;
int goodfreq=1;
long int fileposition=0; //position in input file
long int filesize; //position in input file
FILE *fout;
//create buffers
struct spectral_data spectra;
struct data_vals *data_ptr;
data_ptr = (struct data_vals *)data;
//create header structure
struct setidata frame;
// create time structure
tm hittime;
double spec_time;
// create SQL structures
unsigned long int specid;
//strcpy(def_password, argv[2]);
char sqlquery[1024];
char hitquery[1024];
// file variables
FILE *datatext;
// connect to mySQL database
dbconnect();
#ifdef GRACE
// Initialize grace plotting windows
grace_init();
// grace_open_deux(8192);
// grace_init_deux(maxbin,maxvalue,xmax);
#endif
//check for error opening file
fd = open(argv[1], O_RDONLY);
if(fd==-1)
{
snprintf(error_buf, ERROR_BUF_SIZE, "Error opening file %s", argv[1]);
perror(error_buf);
return 0;
}
//if we can't find a header, nothing to be done
if(find_first_header(fd)==-1) return 0;
//read header
//make sure we are reading as much data as expected, otherwise might be at eof
while(headersize==DR_HEAER_SIZE && datasize==next_buffer_size)
{
k = k+1;
//reset dataflag to "good"
gooddata=1;
// read in the header data
headersize = read(fd, (void *) header, DR_HEAER_SIZE);
fileposition+=headersize;
// int iii=0;
// for(iii=0; iii<DR_HEAER_SIZE; iii++)
// printf("%c", header[iii]);
//get the size of spectra and parse header values
next_buffer_size = read_header(header);
read_header_data(header, &frame);
//Read in data
datasize = read(fd, (void *) data, next_buffer_size);
fileposition+=datasize;
// printf("Buffersize, datasize: %d %d\n", next_buffer_size, datasize);
// int iii=0;
// printf("Printing data header\n");
// for(iii=0; iii<datasize; iii++)
// printf("%c", data[iii]);
//Parse data header
beamnum = read_beam(data, datasize);
read_data_header(data, &frame);
//Convert to RA and Dec
scramAzZatoRaDec(frame.agc_systime, frame.agc_time, frame.agc_az, frame.agc_za,
frame.alfashm_alfamotorposition, beamnum/2, 0, &frame.ra, &frame.dec, &hittime);
get_filename(argv[1], rawfile);
// printf("%s\n", rawfile);
//Calculate MJD
spec_time = time2mjd(frame.agc_systime, frame.agc_time);
// creates query to config table
// set digital_lo and board to be constants, because we figured we knew
// what they were and that they weren't changing
char bid[] = "B2";
sprintf(sqlquery, "INSERT INTO config (thrscale, thrlimit, fftshift, pfbshift, beamnum, obstime, ra, decl, digital_lo, board, AGC_SysTime, AGC_Time, AGC_Az, AGC_Za, AlfaFirstBias, AlfaSecondBias, AlfaMotorPosition, IF1_rfFreq, synI_freqHz, IF1_synI_ampDB, IF1_if1FrqMHz, IF1_alfaFb, TT_TurretEncoder, TT_TurretDegrees, rawfile) VALUES (%ld, %ld, %ld, %ld, %d, %lf, %lf, %lf, %ld, '%s', %ld, %ld, %lf, %lf, %ld, %ld, %lf, %9.1lf, %9.1lf, %ld, %lf, %ld, %ld, %lf, '%s')",
frame.thrscale, frame.thrlimit, frame.fft_shift, frame.pfb_shift,
beamnum, (double) ((int) spec_time), frame.ra, frame.dec, 200000000, bid, frame.agc_systime, frame.agc_time,
frame.agc_az, frame.agc_za, frame.alfashm_alfafirstbias, frame.alfashm_alfasecondbias,
frame.alfashm_alfamotorposition, frame.if1_rffreq, frame.if1_syni_freqhz_0, frame.if1_syni_ampdb_0,
frame.if1_if1frqmhz, frame.if1_alfafb, frame.tt_turretencoder, frame.tt_turretdegrees, rawfile);
#ifndef DEBUG
// insert header data into serendipvv config table
if (mysql_query(conn, sqlquery)) {
fprintf(stderr, "Error inserting data into sql database... \n");
exiterr(3);
}
// saves specid to be inserted at index in other sql tables
if ((res = mysql_store_result(conn))==0 && mysql_field_count(conn)==0 && mysql_insert_id(conn)!=0) {
specid = (unsigned long int) mysql_insert_id(conn);
}
#endif
#ifdef DEBUG
printf("%s\n", sqlquery);
printf("Spec id: %d\n", specid);
#endif
//doesn't do any bounds checking yet...
spectra.numhits = read_data(data, datasize) - 4096;
//printf("size of spectra %d\n",spectra.numhits);
//header,data
data_ptr = (struct data_vals *) (data+SETI_HEADER_SIZE_IN_BYTES);
//======================== TEST FILE DATA DUMP ================
/*
FILE *datafile;
char dataf[100];
sprintf(dataf,"datafiles/datafile%d.dat",counter);
datafile = fopen(dataf,"wb");
fwrite(data,spectra.numhits,1,(FILE *)datafile);
fflush(datafile);
fclose(datafile);
*/
//==============================================
num_records = read_data(data,datasize);
ctr_numhits=0;
//create file spectraldata and print file header
/* char filename[BUFSIZ];
sprintf(filename, "spectraldata%d", beamnum);
datatext = fopen(filename,"w");
fprintf(datatext, "specnum,beamnum,coarsebin,coarsepower,hitpower,fftbin\n");
*/
//Calc values for freq_topo calc
//Freq chan resolution
fstep = 200000000.0/134217728;
fscoarse = 200000000.0/4096;
//Center of the BEE2 bandpass
rfctr = frame.if1_rffreq - 50000000.0;
//Right edge of the last bin is the lowest freq
//because the RF band is flipped in the IF
// rfmin=rfctr-0.5*fscoarse;
rfmin=rfctr+0.5*fscoarse;
//Check to see if there are too many hits
if(num_records>0.9*frame.thrlimit*4096) {
gooddata=0;
fprintf(stderr, "Data bad...more than %5.0lf hits.\n", 0.9*frame.thrlimit*4096);
}
//****OPEN FILE TO WRITE HITS TO
fout=fopen("hits_list.txt", "w");
//============================
// LOOP OVER HITS
//=============================
for(i=0;i< num_records ;i++)
{
goodfreq=1;
fields = ntohl(data_ptr->raw_data);
fft_bin = slice(fields,15,0);
pfb_bin = slice(fields,12,15);
over_thresh = slice(fields,1,27);
blank = slice(fields,3,28);
event = slice(fields,1,31);
pfb_fft_power = ntohl(data_ptr->overflow_cntr); //32.0
// pfb_fft_power = data_ptr->overflow_cntr; //32.0
//Rearrange the bins
//1) Reorder the FFT output order
//2) Reverse bins due to RF/IF flip
pfb_bin = (pfb_bin + 2048) % 4096;
// pfb_bin = 4096 - pfb_bin;
pfb_bin = 4095 - pfb_bin;
fft_bin = (fft_bin + 16384) % 32768;
// fft_bin = 32768 - fft_bin;
fft_bin = 32767 - fft_bin;
fft_bin_loc = fft_bin;
fft_bin+=pfb_bin*32768;
freq_fft_bin = rfmin + fstep*fft_bin;
//Check that the freq of the hit falls within the valid ranges
if(frame.if1_alfafb==1){
if(freq_fft_bin < NBF_FREQ_LO || freq_fft_bin > NBF_FREQ_HI) goodfreq=0;
}
else if(frame.if1_alfafb==0){
if(freq_fft_bin < ALFA_FREQ_LO || freq_fft_bin > ALFA_FREQ_HI) goodfreq=0;
}
value = (int) (pfb_fft_power);
//printf("%d %d %d %d %d %d\n", pfb_bin, fft_bin, pfb_fft_power, blank, event, over_thresh);
if(value < 1)
{
value = 1;
}
if(value > maxvalue)
{
maxvalue = value;
maxbin = fft_bin;
}
//populate coarse bin power
if(fft_bin_loc==16383)
{
spectra.coarse_spectra[pfb_bin] = value;
}
//Only generate string and insert into database if hit valid
if(fft_bin_loc!=16383 && goodfreq==1 && gooddata==1)
{
// spectra.hits[ctr_numhits][0] = value;
// spectra.hits[ctr_numhits][1] = fft_bin;
//Calculate the frequency of the fine bins and barycenter
bary_freq=freq_fft_bin+seti_dop_FreqOffsetAtBaryCenter(freq_fft_bin,
spec_time+2400000.5, frame.ra, frame.dec, 2000.0, AO_LAT, AO_LONG, AO_ELEV);
//Prepare mysql query to insert hits
sprintf(hitquery, "INSERT INTO hit (eventpower, meanpower, binnum, topocentric_freq, barycentric_freq, specid) VALUES (%f, %e, %d, %lf, %lf, %ld)", (double) value, (double) spectra.coarse_spectra[pfb_bin], fft_bin, freq_fft_bin, bary_freq, specid);
//Write row to tmp file
fprintf(fout, "\\N\t %f\t %e\t %d\t %lf\t %lf\t 0\t 0\t 0\t 0\t 0\t %ld\t \n", (double) value, (double) spectra.coarse_spectra[pfb_bin], fft_bin, freq_fft_bin, bary_freq, specid);
/*
#ifndef DEBUG
// insert header data into serendipvv config table
if (mysql_query(conn, hitquery)) {
fprintf(stderr, "Error inserting data into sql database... \n");
exiterr(3);
}
#endif */
}
// fill spectraldata with available data and close file
// fprintf(datatext, "%d, %d, %d, %e, %f, %d\n", k, beamnum, pfb_bin, (double) spectra.coarse_spectra[pfb_bin], (double) value, fft_bin);
ctr_numhits++;
data_ptr++;
ctr++;
}//for(i=0; i<num_records; i++)
fclose(fout);
sprintf(hitquery, "LOAD DATA LOCAL INFILE 'hits_list.txt' INTO TABLE hit");
// printf("%s\n", hitquery);
if (mysql_query(conn, hitquery)) {
fprintf(stderr, "Error inserting data into sql database... \n");
exiterr(3);
}
// fclose(datatext);
#ifndef DEBUG
if(load_blob(conn, specid, spectra.coarse_spectra)!=0)
{
fprintf(stderr, "Blob not loaded\n");
specid=0;
}
#endif
// GracePrintf("autoticks");
// GracePrintf("redraw");
// GracePrintf("updateall");
// GracePrintf("kill g0.s0");
// GracePrintf("saveall \"plots/sample%d.agr\"",counter);
// grace_init_deux(maxbin,log10(maxvalue),xmax);
counter++;
for(i=0;i<4094;i++) {
spectra.coarse_spectra[i] = spectra.coarse_spectra[i+1];
}
#ifdef GRACE
plot_beam(&spectra,beamnum);
printf("num_records: %d spectra.numhits %d\n",num_records,spectra.numhits);
usleep(200000);
if(counter%10 == 0) {
printf("autoscaling...\n");
GracePrintf("redraw");
GracePrintf("updateall");
GracePrintf("autoscale");
/*
//output pdf via grace
GracePrintf("HARDCOPY DEVICE \"EPS\"");
printf("start eps create\n");
GracePrintf("PAGE SIZE 600, 600");
GracePrintf("saveall \"sample.agr\"");
GracePrintf("PRINT TO \"%s\"", "plot.eps");
GracePrintf("PRINT");
*/
}
#endif
}
//=====================================================
/*
// play with some text
for(i=0; i<10; i++){
GracePrintf("WITH STRING %d", i);
GracePrintf("STRING COLOR 0");
GracePrintf("STRING FONT 8");
GracePrintf("STRING DEF \"TEST\"");
GracePrintf("STRING ON");
GracePrintf("STRING LOCTYPE view");
GracePrintf("STRING 0.70, %f", 0.95 - (((float) i) / 40.0) );
}
GracePrintf("redraw");
sleep(5);
*/
//===========================================================
#ifdef GRACE
if (GraceIsOpen()) {
//Flush the output buffer and close Grace
GraceClose();
// We are done
exit(EXIT_SUCCESS);
} else {
exit(EXIT_FAILURE);
}
#endif
//close file
close(fd);
return 0;
}
