iw_desc
The descriptor of the input weights.
Declaration
var iw_desc: (BNNSNDArrayDescriptor, BNNSNDArrayDescriptor)Discussion
Weights are ordered as [num_layers][num_directions][hidden_size][input_size] (C style multi array notation).
iw_desc is duplicated for the case where num_layers > 1 && input_size != hidden_size.