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6b71bf1b UH |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include <stdlib.h> | |
23 | #include <math.h> | |
24 | #include <check.h> | |
25 | #include <libsigrok/libsigrok.h> | |
26 | #include "lib.h" | |
27 | ||
28 | static int sr_analog_init_(struct sr_datafeed_analog *analog, | |
29 | struct sr_analog_encoding *encoding, | |
30 | struct sr_analog_meaning *meaning, | |
31 | struct sr_analog_spec *spec, | |
32 | int digits) | |
33 | { | |
34 | memset(analog, 0, sizeof(*analog)); | |
35 | memset(encoding, 0, sizeof(*encoding)); | |
36 | memset(meaning, 0, sizeof(*meaning)); | |
37 | memset(spec, 0, sizeof(*spec)); | |
38 | ||
39 | analog->encoding = encoding; | |
40 | analog->meaning = meaning; | |
41 | analog->spec = spec; | |
42 | ||
43 | encoding->unitsize = sizeof(float); | |
44 | encoding->is_float = TRUE; | |
45 | #ifdef WORDS_BIGENDIAN | |
46 | encoding->is_bigendian = TRUE; | |
47 | #else | |
48 | encoding->is_bigendian = FALSE; | |
49 | #endif | |
50 | encoding->digits = digits; | |
51 | encoding->is_digits_decimal = TRUE; | |
52 | encoding->scale.p = 1; | |
53 | encoding->scale.q = 1; | |
54 | encoding->offset.p = 0; | |
55 | encoding->offset.q = 1; | |
56 | ||
57 | spec->spec_digits = digits; | |
58 | ||
59 | return SR_OK; | |
60 | } | |
61 | ||
62 | START_TEST(test_analog_to_float) | |
63 | { | |
64 | int ret; | |
65 | unsigned int i; | |
66 | float f, fout; | |
67 | struct sr_channel ch; | |
68 | struct sr_datafeed_analog analog; | |
69 | struct sr_analog_encoding encoding; | |
70 | struct sr_analog_meaning meaning; | |
71 | struct sr_analog_spec spec; | |
72 | const float v[] = {-12.9, -333.999, 0, 3.1415, 29.7, 989898.121212}; | |
73 | ||
74 | sr_analog_init_(&analog, &encoding, &meaning, &spec, 3); | |
75 | analog.num_samples = 1; | |
76 | analog.data = &f; | |
77 | meaning.channels = g_slist_append(NULL, &ch); | |
78 | ||
79 | for (i = 0; i < ARRAY_SIZE(v); i++) { | |
80 | fout = 19; | |
81 | f = v[i]; | |
82 | ret = sr_analog_to_float(&analog, &fout); | |
83 | fail_unless(ret == SR_OK, "sr_analog_to_float() failed: %d.", ret); | |
84 | fail_unless(fabs(f - fout) <= 0.001, "%f != %f", f, fout); | |
85 | } | |
86 | } | |
87 | END_TEST | |
88 | ||
89 | START_TEST(test_analog_to_float_null) | |
90 | { | |
91 | int ret; | |
92 | float f, fout; | |
93 | struct sr_datafeed_analog analog; | |
94 | struct sr_analog_encoding encoding; | |
95 | struct sr_analog_meaning meaning; | |
96 | struct sr_analog_spec spec; | |
97 | ||
98 | f = G_PI; | |
99 | sr_analog_init_(&analog, &encoding, &meaning, &spec, 3); | |
100 | analog.num_samples = 1; | |
101 | analog.data = &f; | |
102 | ||
103 | ret = sr_analog_to_float(NULL, &fout); | |
104 | fail_unless(ret == SR_ERR_ARG); | |
105 | ret = sr_analog_to_float(&analog, NULL); | |
106 | fail_unless(ret == SR_ERR_ARG); | |
107 | ret = sr_analog_to_float(NULL, NULL); | |
108 | fail_unless(ret == SR_ERR_ARG); | |
109 | ||
110 | analog.data = NULL; | |
111 | ret = sr_analog_to_float(&analog, &fout); | |
112 | fail_unless(ret == SR_ERR_ARG); | |
113 | analog.data = &f; | |
114 | ||
115 | analog.meaning = NULL; | |
116 | ret = sr_analog_to_float(&analog, &fout); | |
117 | fail_unless(ret == SR_ERR_ARG); | |
118 | analog.meaning = &meaning; | |
119 | ||
120 | analog.encoding = NULL; | |
121 | ret = sr_analog_to_float(&analog, &fout); | |
122 | fail_unless(ret == SR_ERR_ARG); | |
123 | analog.encoding = &encoding; | |
124 | } | |
125 | END_TEST | |
126 | ||
962172e4 AJ |
127 | START_TEST(test_analog_si_prefix) |
128 | { | |
129 | struct { | |
130 | float input_value; | |
131 | int input_digits; | |
132 | float output_value; | |
133 | int output_digits; | |
134 | const char *output_si_prefix; | |
135 | } v[] = { | |
136 | { 12.0 , 0, 12.0 , 0, "" }, | |
137 | { 12.0 , 1, 12.0 , 1, "" }, | |
138 | { 12.0 , -1, 0.012, 2, "k" }, | |
139 | { 1024.0 , 0, 1.024, 3, "k" }, | |
140 | { 1024.0 , -1, 1.024, 2, "k" }, | |
141 | { 1024.0 , -3, 1.024, 0, "k" }, | |
142 | { 12.0e5 , 0, 1.2, 6, "M" }, | |
143 | { 0.123456, 0, 0.123456, 0, "" }, | |
144 | { 0.123456, 1, 0.123456, 1, "" }, | |
145 | { 0.123456, 2, 0.123456, 2, "" }, | |
146 | { 0.123456, 3, 123.456, 0, "m" }, | |
147 | { 0.123456, 4, 123.456, 1, "m" }, | |
148 | { 0.123456, 5, 123.456, 2, "m" }, | |
149 | { 0.123456, 6, 123.456, 3, "m" }, | |
150 | { 0.123456, 7, 123.456, 4, "m" }, | |
151 | { 0.0123 , 4, 12.3, 1, "m" }, | |
152 | { 0.00123 , 5, 1.23, 2, "m" }, | |
153 | { 0.000123, 4, 0.123, 1, "m" }, | |
154 | { 0.000123, 5, 0.123, 2, "m" }, | |
155 | { 0.000123, 6, 123.0, 0, "µ" }, | |
156 | { 0.000123, 7, 123.0, 1, "µ" }, | |
157 | }; | |
158 | ||
159 | for (unsigned int i = 0; i < ARRAY_SIZE(v); i++) { | |
160 | float value = v[i].input_value; | |
161 | int digits = v[i].input_digits; | |
162 | const char *si_prefix = sr_analog_si_prefix(&value, &digits); | |
163 | ||
164 | fail_unless(fabs(value - v[i].output_value) <= 0.00001, | |
165 | "sr_analog_si_prefix() unexpected output value %f (i=%d).", | |
166 | value , i); | |
167 | fail_unless(digits == v[i].output_digits, | |
168 | "sr_analog_si_prefix() unexpected output digits %d (i=%d).", | |
169 | digits, i); | |
170 | fail_unless(!strcmp(si_prefix, v[i].output_si_prefix), | |
171 | "sr_analog_si_prefix() unexpected output prefix \"%s\" (i=%d).", | |
172 | si_prefix, i); | |
173 | } | |
174 | } | |
175 | END_TEST | |
176 | ||
177 | START_TEST(test_analog_si_prefix_null) | |
178 | { | |
179 | float value = 1.23; | |
180 | int digits = 1; | |
181 | const char *si_prefix; | |
182 | ||
183 | si_prefix = sr_analog_si_prefix(NULL, &digits); | |
184 | fail_unless(!strcmp(si_prefix, "")); | |
185 | si_prefix = sr_analog_si_prefix(&value, NULL); | |
186 | fail_unless(!strcmp(si_prefix, "")); | |
187 | si_prefix = sr_analog_si_prefix(NULL, NULL); | |
188 | fail_unless(!strcmp(si_prefix, "")); | |
189 | } | |
190 | END_TEST | |
191 | ||
6b71bf1b UH |
192 | START_TEST(test_analog_unit_to_string) |
193 | { | |
194 | int ret; | |
195 | unsigned int i; | |
196 | char *result; | |
197 | struct sr_datafeed_analog analog; | |
198 | struct sr_analog_encoding encoding; | |
199 | struct sr_analog_meaning meaning; | |
200 | struct sr_analog_spec spec; | |
201 | const char *r[] = {" V RMS"}; | |
202 | ||
203 | sr_analog_init_(&analog, &encoding, &meaning, &spec, 3); | |
204 | ||
205 | for (i = -1; i < ARRAY_SIZE(r); i++) { | |
206 | meaning.unit = SR_UNIT_VOLT; | |
207 | meaning.mqflags = SR_MQFLAG_RMS; | |
208 | ret = sr_analog_unit_to_string(&analog, &result); | |
209 | fail_unless(ret == SR_OK); | |
210 | fail_unless(result != NULL); | |
211 | fail_unless(!strcmp(result, r[i]), "%s != %s", result, r[i]); | |
212 | g_free(result); | |
213 | } | |
214 | } | |
215 | END_TEST | |
216 | ||
217 | START_TEST(test_analog_unit_to_string_null) | |
218 | { | |
219 | int ret; | |
220 | char *result; | |
221 | struct sr_datafeed_analog analog; | |
222 | struct sr_analog_encoding encoding; | |
223 | struct sr_analog_meaning meaning; | |
224 | struct sr_analog_spec spec; | |
225 | ||
226 | sr_analog_init_(&analog, &encoding, &meaning, &spec, 3); | |
227 | ||
228 | meaning.unit = SR_UNIT_VOLT; | |
229 | meaning.mqflags = SR_MQFLAG_RMS; | |
230 | ||
231 | ret = sr_analog_unit_to_string(NULL, &result); | |
232 | fail_unless(ret == SR_ERR_ARG); | |
233 | ret = sr_analog_unit_to_string(&analog, NULL); | |
234 | fail_unless(ret == SR_ERR_ARG); | |
235 | ret = sr_analog_unit_to_string(NULL, NULL); | |
236 | fail_unless(ret == SR_ERR_ARG); | |
237 | ||
238 | analog.meaning = NULL; | |
239 | ret = sr_analog_unit_to_string(&analog, &result); | |
240 | fail_unless(ret == SR_ERR_ARG); | |
241 | } | |
242 | END_TEST | |
243 | ||
244 | START_TEST(test_set_rational) | |
245 | { | |
246 | unsigned int i; | |
247 | struct sr_rational r; | |
248 | const int64_t p[] = {0, 1, -5, INT64_MAX}; | |
249 | const uint64_t q[] = {0, 2, 7, UINT64_MAX}; | |
250 | ||
251 | for (i = 0; i < ARRAY_SIZE(p); i++) { | |
252 | sr_rational_set(&r, p[i], q[i]); | |
253 | fail_unless(r.p == p[i] && r.q == q[i]); | |
254 | } | |
255 | } | |
256 | END_TEST | |
257 | ||
258 | START_TEST(test_set_rational_null) | |
259 | { | |
260 | sr_rational_set(NULL, 5, 7); | |
261 | } | |
262 | END_TEST | |
263 | ||
bdba3626 SB |
264 | START_TEST(test_cmp_rational) |
265 | { | |
266 | const struct sr_rational r[] = { { 1, 1 }, | |
267 | { 2, 2 }, | |
268 | { 1000, 1000 }, | |
269 | { INT64_MAX, INT64_MAX }, | |
270 | { 1, 4 }, | |
271 | { 2, 8 }, | |
272 | { INT64_MAX, UINT64_MAX }, | |
273 | { INT64_MIN, UINT64_MAX }, | |
274 | }; | |
275 | ||
276 | fail_unless(sr_rational_eq(&r[0], &r[0]) == 1); | |
277 | fail_unless(sr_rational_eq(&r[0], &r[1]) == 1); | |
278 | fail_unless(sr_rational_eq(&r[1], &r[2]) == 1); | |
279 | fail_unless(sr_rational_eq(&r[2], &r[3]) == 1); | |
280 | fail_unless(sr_rational_eq(&r[3], &r[3]) == 1); | |
281 | ||
282 | fail_unless(sr_rational_eq(&r[4], &r[4]) == 1); | |
283 | fail_unless(sr_rational_eq(&r[4], &r[5]) == 1); | |
284 | fail_unless(sr_rational_eq(&r[5], &r[5]) == 1); | |
285 | ||
286 | fail_unless(sr_rational_eq(&r[6], &r[6]) == 1); | |
287 | fail_unless(sr_rational_eq(&r[7], &r[7]) == 1); | |
288 | ||
289 | fail_unless(sr_rational_eq(&r[1], &r[4]) == 0); | |
290 | } | |
291 | END_TEST | |
292 | ||
ee1b6054 SB |
293 | START_TEST(test_mult_rational) |
294 | { | |
295 | const struct sr_rational r[][3] = { | |
296 | /* a * b = c */ | |
297 | { { 1, 1 }, { 1, 1 }, { 1, 1 }}, | |
298 | { { 2, 1 }, { 3, 1 }, { 6, 1 }}, | |
299 | { { 1, 2 }, { 2, 1 }, { 1, 1 }}, | |
300 | /* Test negative numbers */ | |
301 | { { -1, 2 }, { 2, 1 }, { -1, 1 }}, | |
302 | { { -1, 2 }, { -2, 1 }, { 1, 1 }}, | |
303 | { { -(1ll<<20), (1ll<<10) }, { -(1ll<<20), 1 }, { (1ll<<30), 1 }}, | |
304 | /* Test reduction */ | |
305 | { { INT32_MAX, (1ll<<12) }, { (1<<2), 1 }, { INT32_MAX, (1ll<<10) }}, | |
306 | { { INT64_MAX, (1ll<<63) }, { (1<<3), 1 }, { INT64_MAX, (1ll<<60) }}, | |
307 | /* Test large numbers */ | |
308 | { { (1ll<<40), (1ll<<10) }, { (1ll<<30), 1 }, { (1ll<<60), 1 }}, | |
309 | { { -(1ll<<40), (1ll<<10) }, { -(1ll<<30), 1 }, { (1ll<<60), 1 }}, | |
310 | ||
311 | { { 1000, 1 }, { 8000, 1 }, { 8000000, 1 }}, | |
312 | { { 10000, 1 }, { 80000, 1 }, { 800000000, 1 }}, | |
313 | { { 10000*3, 4 }, { 80000*3, 1 }, { 200000000*9, 1 }}, | |
314 | { { 1, 1000 }, { 1, 8000 }, { 1, 8000000 }}, | |
315 | { { 1, 10000 }, { 1, 80000 }, { 1, 800000000 }}, | |
316 | { { 4, 10000*3 }, { 1, 80000*3 }, { 1, 200000000*9 }}, | |
317 | ||
318 | { { -10000*3, 4 }, { 80000*3, 1 }, { -200000000*9, 1 }}, | |
319 | { { 10000*3, 4 }, { -80000*3, 1 }, { -200000000*9, 1 }}, | |
320 | }; | |
321 | ||
322 | for (unsigned i = 0; i < ARRAY_SIZE(r); i++) { | |
323 | struct sr_rational res; | |
324 | ||
325 | int rc = sr_rational_mult(&res, &r[i][0], &r[i][1]); | |
326 | fail_unless(rc == SR_OK); | |
327 | fail_unless(sr_rational_eq(&res, &r[i][2]) == 1, | |
328 | "sr_rational_mult() failed: [%d] %ld/%lu != %ld/%lu.", | |
329 | i, res.p, res.q, r[i][2].p, r[i][2].q); | |
330 | } | |
331 | } | |
332 | END_TEST | |
333 | ||
17d5a11c SB |
334 | START_TEST(test_div_rational) |
335 | { | |
336 | const struct sr_rational r[][3] = { | |
337 | /* a * b = c */ | |
338 | { { 1, 1 }, { 1, 1 }, { 1, 1 }}, | |
339 | { { 2, 1 }, { 1, 3 }, { 6, 1 }}, | |
340 | { { 1, 2 }, { 1, 2 }, { 1, 1 }}, | |
341 | /* Test negative numbers */ | |
342 | { { -1, 2 }, { 1, 2 }, { -1, 1 }}, | |
343 | { { -1, 2 }, { -1, 2 }, { 1, 1 }}, | |
344 | { { -(1ll<<20), (1ll<<10) }, { -1, (1ll<<20) }, { (1ll<<30), 1 }}, | |
345 | /* Test reduction */ | |
346 | { { INT32_MAX, (1ll<<12) }, { 1, (1<<2) }, { INT32_MAX, (1ll<<10) }}, | |
347 | { { INT64_MAX, (1ll<<63) }, { 1, (1<<3) }, { INT64_MAX, (1ll<<60) }}, | |
348 | /* Test large numbers */ | |
349 | { { (1ll<<40), (1ll<<10) }, { 1, (1ll<<30) }, { (1ll<<60), 1 }}, | |
350 | { { -(1ll<<40), (1ll<<10) }, { -1, (1ll<<30) }, { (1ll<<60), 1 }}, | |
351 | ||
352 | { { 10000*3, 4 }, { 1, 80000*3 }, { 200000000*9, 1 }}, | |
353 | { { 4, 10000*3 }, { 80000*3, 1 }, { 1, 200000000*9 }}, | |
354 | ||
355 | { { -10000*3, 4 }, { 1, 80000*3 }, { -200000000*9, 1 }}, | |
356 | { { 10000*3, 4 }, { -1, 80000*3 }, { -200000000*9, 1 }}, | |
357 | }; | |
358 | ||
359 | for (unsigned i = 0; i < ARRAY_SIZE(r); i++) { | |
360 | struct sr_rational res; | |
361 | ||
362 | int rc = sr_rational_div(&res, &r[i][0], &r[i][1]); | |
363 | fail_unless(rc == SR_OK); | |
364 | fail_unless(sr_rational_eq(&res, &r[i][2]) == 1, | |
365 | "sr_rational_mult() failed: [%d] %ld/%lu != %ld/%lu.", | |
366 | i, res.p, res.q, r[i][2].p, r[i][2].q); | |
367 | } | |
368 | ||
369 | { | |
370 | struct sr_rational res; | |
371 | int rc = sr_rational_div(&res, &r[0][0], &((struct sr_rational){ 0, 5 })); | |
372 | ||
373 | fail_unless(rc == SR_ERR_ARG); | |
374 | } | |
375 | } | |
376 | END_TEST | |
377 | ||
6b71bf1b UH |
378 | Suite *suite_analog(void) |
379 | { | |
380 | Suite *s; | |
381 | TCase *tc; | |
382 | ||
383 | s = suite_create("analog"); | |
384 | ||
385 | tc = tcase_create("analog_to_float"); | |
386 | tcase_add_test(tc, test_analog_to_float); | |
387 | tcase_add_test(tc, test_analog_to_float_null); | |
962172e4 AJ |
388 | tcase_add_test(tc, test_analog_si_prefix); |
389 | tcase_add_test(tc, test_analog_si_prefix_null); | |
6b71bf1b UH |
390 | tcase_add_test(tc, test_analog_unit_to_string); |
391 | tcase_add_test(tc, test_analog_unit_to_string_null); | |
392 | tcase_add_test(tc, test_set_rational); | |
393 | tcase_add_test(tc, test_set_rational_null); | |
bdba3626 | 394 | tcase_add_test(tc, test_cmp_rational); |
ee1b6054 | 395 | tcase_add_test(tc, test_mult_rational); |
17d5a11c | 396 | tcase_add_test(tc, test_div_rational); |
6b71bf1b UH |
397 | suite_add_tcase(s, tc); |
398 | ||
399 | return s; | |
400 | } |