spires_num_inputs

Return the number of input channels for the reservoir.

Signature

size_t spires_num_inputs(const spires_reservoir *r);

Parameters

Returns

size_t — The number of input channels, equal to the num_inputs field of the spires_reservoir_config used at creation time. This is the expected length of the input vector passed to spires_step.

Example

size_t ni = spires_num_inputs(r);
double *u = calloc(ni, sizeof(double));
u[0] = 1.0;  /* drive only the first input channel */
spires_step(r, u);
free(u);

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_neurons — query the reservoir size.
• spires_num_outputs — query the output dimension.
• spires_step — expects an input vector of this length.