- }
-
- g_variant_get(data, "(tt)", &p, &q);
-
- for (i = 0; i < ARRAY_SIZE(dlm_vdivs); i++) {
- if (p != dlm_vdivs[i][0] ||
- q != dlm_vdivs[i][1])
- continue;
- for (j = 1; j <= model->analog_channels; j++) {
- if (cg != devc->analog_groups[j - 1])
- continue;
- state->analog_states[j - 1].vdiv = i;
- g_ascii_formatd(float_str, sizeof(float_str),
- "%E", (float) p / q);
- if (dlm_analog_chan_vdiv_set(sdi->conn, j, float_str) != SR_OK ||
- sr_scpi_get_opc(sdi->conn) != SR_OK)
- return SR_ERR;
-
- break;
- }
-
- ret = SR_OK;
- break;
- }
+ if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(dlm_vdivs))) < 0)
+ return SR_ERR_ARG;
+ if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
+ return SR_ERR_ARG;
+ state->analog_states[j].vdiv = idx;
+ g_ascii_formatd(float_str, sizeof(float_str),
+ "%E", (float) dlm_vdivs[idx][0] / dlm_vdivs[idx][1]);
+ if (dlm_analog_chan_vdiv_set(sdi->conn, j + 1, float_str) != SR_OK ||
+ sr_scpi_get_opc(sdi->conn) != SR_OK)
+ return SR_ERR;
+ ret = SR_OK;