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#ifndef Orz6Wl1nWMpziVYSyArLK0EzFpA
#define Orz6Wl1nWMpziVYSyArLK0EzFpA
#include "array.hpp"
#include "pointers.hpp"
#include "scalar.hpp"
#include "simlimits.hpp"
#include "time.hpp"
struct Topology {
// ctor for reading topo
Topology()
: delay("topology_delay"),
target("topology_target"),
isInitialized("topology_initialized")
{ assert(isInitialized()); }
// ctor for writing topo
Topology(Array<Time, maxNeurons * maxSynapsesPerNeuron> &aDelay,
Array<Ptr<Synapse>::ptr_t, maxNeurons * maxSynapsesPerNeuron> &aTarget)
: delay("topology_delay"),
target("topology_target"),
isInitialized("topology_initialized") {
assert(not isInitialized());
isInitialized() = true;
target() = aTarget;
delay() = aDelay;
}
// tools
Ptr<Synapse> synapse(Ptr<Neuron> neuron, uint16_t offset) {
return Ptr<Synapse>(target().get(neuron() * maxSynapsesPerNeuron + offset));
}
Time time(Ptr<Neuron> neuron, uint16_t offset) {
return delay().get(neuron() * maxSynapsesPerNeuron + offset);
}
// consts
inline static Ptr<Synapse> nil() { return Ptr<Synapse>(-1); }
// storage
Scalar<Array<Time, maxNeurons * maxSynapsesPerNeuron>> delay;
Scalar<Array<Ptr<Synapse>::ptr_t, maxNeurons * maxSynapsesPerNeuron>> target;
Scalar<bool> isInitialized;
};
/// a helper to generate the offset between the baseTime of an event
/// and it's arrival time (in priority queue); is zero except for the
/// case of sending a spike from a neuron
// default case: zero offset
template<typename ContQuant, typename EventQuant>
struct TopologicalTimeOffset {
inline Time operator() (Topology &topology, typename ContQuant::instance_ptr_t src) {
return Time(0.0);
}
};
// neuron emit spike case: lookup offset in topology
template<>
struct TopologicalTimeOffset<Neuron, Spike> {
inline Time operator() (Topology &topology, Neuron::instance_ptr_t src) {
return topology.time(src, 0);
}
};
/// a helper to catch the case of a neuron with empty fanout
// default case: emit event
template<typename ContQuant, typename EventQuant>
struct TopologicalEventDiscard {
inline bool operator() (Topology &topology, typename ContQuant::instance_ptr_t src) {
return false;
}
};
// neuron emit spike case: lookup offset in topology
template<>
struct TopologicalEventDiscard<Neuron, Spike> {
inline bool operator() (Topology &topology, Neuron::instance_ptr_t src) {
return (topology.synapse(src, 0)() == Topology::nil()());
}
};
#endif // Orz6Wl1nWMpziVYSyArLK0EzFpA
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