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; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
19 #define AO_CONVERT_TEST
20 typedef int32_t alt_t;
22 #include "ao_convert_pa.c"
27 static inline int i_abs(int i) { return i < 0 ? -i : i; }
30 main (int argc, char **argv)
33 int32_t p_to_a, p_to_a_to_p;
34 int32_t a_to_p, a_to_p_to_a;
35 int max_p_error = 0, max_p_error_p = -1;
36 int max_a_error = 0, max_a_error_a = -1;
41 for (i = 0; i < 120000 + STEP_P; i += STEP_P) {
44 p_to_a = ao_pa_to_altitude(i);
45 p_to_a_to_p = ao_altitude_to_pa(p_to_a);
46 p_error = i_abs(p_to_a_to_p - i);
47 if (p_error > max_p_error) {
48 max_p_error = p_error;
51 // printf ("pa %d alt %d pa %d\n",
52 // i, p_to_a, p_to_a_to_p);
54 for (i = -1450; i < 40000 + STEP_A; i += STEP_A) {
55 a_to_p = ao_altitude_to_pa(i);
56 a_to_p_to_a = ao_pa_to_altitude(a_to_p);
57 a_error = i_abs(a_to_p_to_a - i);
58 if (a_error > max_a_error) {
59 max_a_error = a_error;
62 // printf ("alt %d pa %d alt %d\n",
63 // i, a_to_p, a_to_p_to_a);
65 if (max_p_error > 2) {
66 printf ("max p error %d at %d\n", max_p_error,
70 if (max_a_error > 1) {
71 printf ("max a error %d at %d\n", max_a_error,