spires_num_neurons

Return the number of neurons in the reservoir.

Signature

size_t spires_num_neurons(const spires_reservoir *r);

Parameters

Returns

size_t — The number of neurons, equal to the num_neurons field of the spires_reservoir_config used at creation time. This is the length of the internal state vector and the required buffer size for spires_read_reservoir_state and spires_copy_reservoir_state.

Example

size_t N = spires_num_neurons(r);
double *state = malloc(N * sizeof(double));
spires_read_reservoir_state(r, state);
/* ... */
free(state);

Notes

• Const-qualified. This function takes a const pointer and does not modify the reservoir. It is safe to call concurrently with other read-only functions.
• Immutable. The return value is fixed at creation time and never changes for the lifetime of the reservoir.

See Also

• spires_num_inputs — query the input dimension.
• spires_num_outputs — query the output dimension.
• spires_read_reservoir_state — requires a buffer of this length.
• spires_copy_reservoir_state — returns an array of this length.