2 * Copyright © 2012 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20 #define AO_CONVERT_TEST
21 #define AO_TICK_TYPE uint32_t
22 typedef int32_t alt_t;
23 typedef int32_t pres_t;
25 #include "ao_convert_pa.c"
30 static inline int i_abs(int i) { return i < 0 ? -i : i; }
33 main (int argc, char **argv)
36 int32_t p_to_a, p_to_a_to_p;
37 int32_t a_to_p, a_to_p_to_a;
38 int max_p_error = 0, max_p_error_p = -1;
39 int max_a_error = 0, max_a_error_a = -1;
44 for (i = 0; i < 120000 + STEP_P; i += STEP_P) {
47 p_to_a = ao_pa_to_altitude(i);
48 p_to_a_to_p = ao_altitude_to_pa(p_to_a);
49 p_error = i_abs(p_to_a_to_p - i);
50 if (p_error > max_p_error) {
51 max_p_error = p_error;
54 // printf ("pa %d alt %d pa %d\n",
55 // i, p_to_a, p_to_a_to_p);
57 for (i = -1450; i < 40000 + STEP_A; i += STEP_A) {
58 a_to_p = ao_altitude_to_pa(i);
59 a_to_p_to_a = ao_pa_to_altitude(a_to_p);
60 a_error = i_abs(a_to_p_to_a - i);
61 if (a_error > max_a_error) {
62 max_a_error = a_error;
65 // printf ("alt %d pa %d alt %d\n",
66 // i, a_to_p, a_to_p_to_a);
68 if (max_p_error > 2) {
69 printf ("max p error %d at %d\n", max_p_error,
73 if (max_a_error > 1) {
74 printf ("max a error %d at %d\n", max_a_error,