/* * $Id: derivatives.h 1097 2006-08-27 05:18:22 +0000 (Sun, 27 Aug 2006) mhe $ */ extern int num_blocks, block_size[],           bias2, cell_mod, in_mod_b, in_nn_mod, in_mod, element, **inp_idx;              extern double **G,              **inp,              ***SI,              ***SC;              /* input gates */extern double *Y_in;  /* output gates */extern double *Y_out;  /* new activation for all units */extern double *Yk_new;  /* old activations */extern double *Yk_old;