1 // Copyright 2020 Google LLC
2 //
3 // This source code is licensed under the BSD-style license found in the
4 // LICENSE file in the root directory of this source tree.
5
6 #include <math.h>
7 #include <stddef.h>
8 #include <stdint.h>
9
10 #include <xnnpack.h>
11 #include <xnnpack/log.h>
12 #include <xnnpack/params.h>
13 #include <xnnpack/subgraph.h>
14
15
xnn_define_elu(xnn_subgraph_t subgraph,float alpha,uint32_t input_id,uint32_t output_id,uint32_t flags)16 enum xnn_status xnn_define_elu(
17 xnn_subgraph_t subgraph,
18 float alpha,
19 uint32_t input_id,
20 uint32_t output_id,
21 uint32_t flags)
22 {
23 if ((xnn_params.init_flags & XNN_INIT_FLAG_XNNPACK) == 0) {
24 xnn_log_error("failed to define %s operator: XNNPACK is not initialized",
25 xnn_node_type_to_string(xnn_node_type_elu));
26 return xnn_status_uninitialized;
27 }
28
29 if (alpha <= 0.0f || !isnormal(alpha)) {
30 xnn_log_error(
31 "failed to define %s operator with %.7g alpha parameter: alpha must be finite, normalized, and positive",
32 xnn_node_type_to_string(xnn_node_type_elu), alpha);
33 return xnn_status_invalid_parameter;
34 }
35
36 if (input_id >= subgraph->num_values) {
37 xnn_log_error(
38 "failed to define %s operator with input ID #%" PRIu32 ": invalid Value ID",
39 xnn_node_type_to_string(xnn_node_type_elu), input_id);
40 return xnn_status_invalid_parameter;
41 }
42
43 if (output_id >= subgraph->num_values) {
44 xnn_log_error(
45 "failed to define %s operator with output ID #%" PRIu32 ": invalid Value ID",
46 xnn_node_type_to_string(xnn_node_type_elu), output_id);
47 return xnn_status_invalid_parameter;
48 }
49
50 struct xnn_node* node = xnn_subgraph_new_node(subgraph);
51 if (node == NULL) {
52 return xnn_status_out_of_memory;
53 }
54
55 node->type = xnn_node_type_elu;
56 node->params.elu.alpha = alpha;
57 node->num_inputs = 1;
58 node->inputs[0] = input_id;
59 node->num_outputs = 1;
60 node->outputs[0] = output_id;
61 node->flags = flags;
62
63 return xnn_status_success;
64 }
65