static void generateEvents( vegasGrid * vegPtr, char *fname, FILE * iprt)
{ long nGenerated=0;
double eff;
int nmax,mult,neg;
char mess[200];
long cEvent;
long fileEnd;
double sumW,sumW2;
event_stat stat;
events_= fopen(fname,"a");
if(ftell(events_)==0) write_event_cap();
fileEnd=ftell(events_);
fflush(events_);
cEvent= vegas_events(vegPtr,nEvents,max,writeEvent,regenEvents,nPROCSS,&stat); // &eff,&nmax,&mult,&neg);
eff=stat.eff; neg=stat.neg; mult=stat.lmax;
fclose(events_);
if(cEvent>0)
{ int l;
sprintf(mess,"Statistic\n Events generated: %ld\n efficiency: %.1E\n"
"<weight^2>/<weight>^2-1: %.1E \nNegative weight events: %d \n", cEvent, eff,
cEvent*stat.sumW2/stat.sumW/stat.sumW-1., neg);
l=strlen(mess);
strcat(mess,"---------------\n Accept events? ");
if(mess_y_n(25,15,mess))
{
long nEvPos=0,nWpos=0;
integral.old=1;
mess[l]=0;
events_=fopen(fname,"r+");
while(nEvPos==0 || nWpos==0)
{ char ch;
char word[100];
do fscanf(events_,"%c",&ch); while(ch !='#');
fscanf(events_,"%s",word);
if(strcmp(word,"Number_of_events")==0) nEvPos=ftell(events_);
if(strcmp(word,"Sum_of_weights")==0) nWpos=ftell(events_);
}
fseek(events_,nEvPos,SEEK_SET);
fscanf(events_,"%ld",&nGenerated);
nGenerated+=cEvent;
fseek(events_,nEvPos,SEEK_SET);
fprintf(events_," %10ld",nGenerated);
fseek(events_,nWpos,SEEK_SET);
fscanf(events_,"%lf %lf",&sumW,&sumW2);
sumW+=stat.sumW;
sumW2+=stat.sumW2;
fseek(events_,nWpos,SEEK_SET);
fprintf(events_," %12.4E %12.4E",sumW,sumW2);
fclose(events_);
fprintf(iprt," %ld events are stored in '%s'\n",nGenerated,fname);
fprintf(iprt,"%s\n",mess);
fflush(iprt);
} else truncate(fname,fileEnd);
}
}
static void generateEvents( vegasGrid * vegPtr,
double (*func)(double *,double,double*), char *fname, FILE * iprt)
{
int mode=1;
void * pscr=NULL;
static int regen=1;
// if(!vegPtr->fMax)improveEvents(vegPtr,func);
for(mode=1;;)
{
char strmen[]="\032"
" Number of events=N1 "
" Launch generator "
" Allow weighted events OFF";
if(!regen) improveStr(strmen,"OFF","%s","ON");
improveStr(strmen,"N1","%d",nEvents);
menu1(53,10,"",strmen,"n_gen_*",&pscr,&mode);
switch(mode)
{ case 0: return;
case 1: correctLong(50,15,"",&nEvents,1); break;
case 2:
{ long nGenerated=0;
double eff;
int nmax,mult,neg;
char mess[200];
long cEvent;
long fileEnd;
if(!vegPtr->fMax) { messanykey(15,15,"Generator is not ready."); break;}
events_= fopen(fname,"a");
if(ftell(events_)==0) write_event_cap();
fileEnd=ftell(events_);
build_cb_int(Nsub);
cEvent= vegas_events(vegPtr,nEvents,max,func,writeEvent,regen,&eff,&nmax,&mult,&neg);
fclose(events_);
if(cEvent>0)
{ int l;
sprintf(mess,"Statistic\n Events generated: %ld\n efficiency: %.1E\nMax event multiplicity: %d\n"
"Multiple events(total): %d \nNegative weight events: %d \n", cEvent, eff,nmax,mult, neg);
l=strlen(mess);
strcat(mess,"---------------\n Accept events? ");
if(mess_y_n(25,15,mess))
{
long nEvPos=0;
integral.old=1;
mess[l]=0;
events_=fopen(fname,"r+");
while(nEvPos==0)
{ char ch;
char word[100];
do fscanf(events_,"%c",&ch); while(ch !='#');
fscanf(events_,"%s",word);
if(strcmp(word,"Number_of_events")==0) nEvPos=ftell(events_);
}
fscanf(events_,"%ld",&nGenerated);
nGenerated+=cEvent;
fseek(events_,nEvPos,SEEK_SET);
fprintf(events_," %10ld",nGenerated);
fclose(events_);
fprintf(iprt," %ld events are stored in '%s'\n",nGenerated,fname);
fprintf(iprt,"%s\n",mess);
fflush(iprt);
} else truncate(fname,fileEnd);
}
destroy_cb_int();
}
break;
// case 3: improveEvents(vegPtr,func); put_text(&pscr); break;
case 3: regen=!regen;
// goto ret;
}
}
}
