| /* |
| ********************************************************************** |
| * Copyright (C) Miroslav Lichvar 2016-2018 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| * |
| ********************************************************************** |
| */ |
| |
| #include <hwclock.c> |
| #include "test.h" |
| |
| void |
| test_unit(void) |
| { |
| struct timespec start_hw_ts, start_local_ts, hw_ts, local_ts, ts; |
| HCL_Instance clock; |
| double freq, jitter, interval, dj, sum; |
| int i, j, k, count; |
| |
| LCL_Initialise(); |
| |
| for (i = 1; i <= 8; i++) { |
| clock = HCL_CreateInstance(random() % (1 << i), 1 << i, 1.0); |
| |
| for (j = 0, count = 0, sum = 0.0; j < 100; j++) { |
| UTI_ZeroTimespec(&start_hw_ts); |
| UTI_ZeroTimespec(&start_local_ts); |
| UTI_AddDoubleToTimespec(&start_hw_ts, TST_GetRandomDouble(0.0, 1e9), &start_hw_ts); |
| UTI_AddDoubleToTimespec(&start_local_ts, TST_GetRandomDouble(0.0, 1e9), &start_local_ts); |
| |
| DEBUG_LOG("iteration %d", j); |
| |
| freq = TST_GetRandomDouble(0.9, 1.1); |
| jitter = TST_GetRandomDouble(10.0e-9, 1000.0e-9); |
| interval = TST_GetRandomDouble(0.1, 10.0); |
| |
| clock->n_samples = 0; |
| clock->valid_coefs = 0; |
| |
| for (k = 0; k < 100; k++) { |
| UTI_AddDoubleToTimespec(&start_hw_ts, k * interval * freq, &hw_ts); |
| UTI_AddDoubleToTimespec(&start_local_ts, k * interval, &local_ts); |
| if (HCL_CookTime(clock, &hw_ts, &ts, NULL)) { |
| dj = fabs(UTI_DiffTimespecsToDouble(&ts, &local_ts) / jitter); |
| DEBUG_LOG("delta/jitter %f", dj); |
| if (clock->n_samples >= clock->max_samples / 2) |
| sum += dj, count++; |
| TEST_CHECK(clock->n_samples < 4 || dj <= 4.0); |
| TEST_CHECK(clock->n_samples < 8 || dj <= 3.0); |
| } |
| |
| UTI_AddDoubleToTimespec(&start_hw_ts, k * interval * freq + TST_GetRandomDouble(-jitter, jitter), &hw_ts); |
| |
| if (HCL_NeedsNewSample(clock, &local_ts)) |
| HCL_AccumulateSample(clock, &hw_ts, &local_ts, 2.0 * jitter); |
| |
| TEST_CHECK(clock->valid_coefs || clock->n_samples < 2); |
| |
| if (!clock->valid_coefs) |
| continue; |
| |
| TEST_CHECK(fabs(clock->offset) <= 2.0 * jitter); |
| } |
| } |
| |
| TEST_CHECK(sum / count < 2.4 / sqrt(clock->max_samples)); |
| |
| HCL_DestroyInstance(clock); |
| } |
| |
| LCL_Finalise(); |
| } |