Rivet: Parton content functions

| Rivet 3.1.9

Functions
Parton content functions

## Functions
bool | Rivet::PID::hasDown (int pid)
| Does this particle contain a down quark?
bool | Rivet::PID::hasUp (int pid)
| Does this particle contain an up quark?
bool | Rivet::PID::hasStrange (int pid)
| Does this particle contain a strange quark?
bool | Rivet::PID::hasCharm (int pid)
| Does this particle contain a charm quark?
bool | Rivet::PID::hasBottom (int pid)
| Does this particle contain a bottom quark?
bool | Rivet::PID::hasTop (int pid)
| Does this particle contain a top quark?

## Detailed Description