+double bt_ctf_get_float(const struct bt_definition *field)
+{
+ double ret = 0.0;
+
+ if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_FLOAT) {
+ ret = bt_get_float(field);
+ } else {
+ bt_ctf_field_set_error(-EINVAL);
+ }
+
+ return ret;
+}
+
+const struct bt_definition *bt_ctf_get_variant(const struct bt_definition *field)
+{
+ const struct bt_definition *ret = NULL;
+
+ if (field && bt_ctf_field_type(
+ bt_ctf_get_decl_from_def(field)) == CTF_TYPE_VARIANT) {
+ struct definition_variant *variant = container_of(field,
+ struct definition_variant, p);
+
+ ret = bt_variant_get_current_field(variant);
+ } else {
+ bt_ctf_field_set_error(-EINVAL);
+ }
+
+ return ret;
+}
+
+uint64_t bt_ctf_get_struct_field_count(const struct bt_definition *field)
+{
+ uint64_t ret = -1;
+ const struct bt_declaration *declaration =
+ bt_ctf_get_decl_from_def(field);
+
+ if (field && bt_ctf_field_type(declaration) == CTF_TYPE_STRUCT) {
+ const struct declaration_struct *struct_declaration =
+ container_of(declaration, struct declaration_struct, p);
+
+ ret = bt_struct_declaration_len(struct_declaration);
+ } else {
+ bt_ctf_field_set_error(-EINVAL);
+ }
+
+ return ret;
+}
+
+const struct bt_definition *bt_ctf_get_struct_field_index(
+ const struct bt_definition *field, uint64_t i)
+{
+ const struct bt_definition *ret = NULL;
+
+ if (field && bt_ctf_field_type(
+ bt_ctf_get_decl_from_def(field)) == CTF_TYPE_STRUCT &&
+ i < bt_ctf_get_struct_field_count(field)) {
+ const struct definition_struct *structure = container_of(
+ field, struct definition_struct, p);
+
+ ret = bt_struct_definition_get_field_from_index(structure, i);
+ }
+
+ if (!ret) {
+ bt_ctf_field_set_error(-EINVAL);
+ }
+
+ return ret;
+}
+