937         CvMat *x1 = &hdr1, *x2 = &hdr2, *grad1 = &ghdr1, *grad2 = &ghdr2, *temp;  in train_backprop()  local
986         *grad2 = *grad1;  in train_backprop()
987         grad2->data.db = buf_ptr + max_count;  in train_backprop()
1028                 grad2->cols = n1;  in train_backprop()
1030                 cvGEMM( grad1, &_w, 1, 0, 0, grad2, CV_GEMM_B_T );  in train_backprop()
1032             CV_SWAP( grad1, grad2, temp );  in train_backprop()
1132         CvMat *x1, *x2, *grad1, *grad2, *temp;  in train_rprop()  local
1140             grad1 = &ghdr1; grad2 = &ghdr2;  in train_rprop()
1177             grad2->data.db = buf_ptr + max_count*dcount;  in train_rprop()
1231                 cvInitMatHeader( grad2, dcount, n1, CV_64F, grad2->data.db );  in train_rprop()
1234                     cvGEMM( grad1, &_w, 1, 0, 0, grad2, CV_GEMM_B_T );  in train_rprop()
1235                 CV_SWAP( grad1, grad2, temp );  in train_rprop()