23 if ( !
event() || !
event()->run_info() )
return 0;
28 double cross_section = xs;
29 double cross_section_error = xs_err;
33 if (
event() ) N = std::max(
event()->weights().size(), N);
40 const char *cursor = att.data();
45 double cross_section = atof(cursor);
48 if ( !(cursor = strchr(cursor+1,
' ')) )
return false;
49 double cross_section_error = atof(cursor);
60 if (
event() ) N = std::max(
event()->weights().size(), N);
61 const size_t max_n_cross_sections = 1000;
63 if ( !(cursor = strchr(cursor+1,
' ')) )
break;
65 if ( !(cursor = strchr(cursor+1,
' ')) )
break;
69 HEPMC3_WARNING(
"GenCrossSection::from_string: too many optional cross-sections N=" <<
cross_sections.size() <<
" or ill-formed input:" << att)
79 std::ostringstream os;
81 os << std::setprecision(8) << std::scientific
97 return ( memcmp( (
void*)
this, (
void*) &a,
sizeof(
class GenCrossSection) ) == 0 );
101 return !( a == *this );
#define HEPMC3_WARNING(MESSAGE)
Macro for printing HEPMC3_HEPMC3_WARNING messages.
Definition of attribute class GenCrossSection.
Definition of class GenEvent.
const GenEvent * event() const
Stores additional information about cross-section.
long attempted_events
The number of events attempted so far.
std::vector< double > cross_section_errors
Per-weight errors.
void set_cross_section(const double &xs, const double &xs_err, const long &n_acc=-1, const long &n_att=-1)
Set all fields.
std::vector< double > cross_sections
Per-weight cross-section.
bool is_valid() const
Verify that the instance contains non-zero information.
bool from_string(const std::string &att) override
Implementation of Attribute::from_string.
bool operator==(const GenCrossSection &) const
Operator ==.
bool operator!=(const GenCrossSection &) const
Operator !=.
int windx(std::string wName) const
get the weight index given a weight name.
bool to_string(std::string &att) const override
Implementation of Attribute::to_string.
long accepted_events
The number of events generated so far.
std::shared_ptr< GenRunInfo > run_info() const
Get a pointer to the the GenRunInfo object.