[libsigrok.git] / tests / analog.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include <stdlib.h>
#include <math.h>
#include <check.h>
#include <libsigrok/libsigrok.h>
#include "lib.h"

static int sr_analog_init_(struct sr_datafeed_analog *analog,
		struct sr_analog_encoding *encoding,
		struct sr_analog_meaning *meaning,
		struct sr_analog_spec *spec,
		int digits)
{
	memset(analog, 0, sizeof(*analog));
	memset(encoding, 0, sizeof(*encoding));
	memset(meaning, 0, sizeof(*meaning));
	memset(spec, 0, sizeof(*spec));

	analog->encoding = encoding;
	analog->meaning = meaning;
	analog->spec = spec;

	encoding->unitsize = sizeof(float);
	encoding->is_float = TRUE;
#ifdef WORDS_BIGENDIAN
	encoding->is_bigendian = TRUE;
#else
	encoding->is_bigendian = FALSE;
#endif
	encoding->digits = digits;
	encoding->is_digits_decimal = TRUE;
	encoding->scale.p = 1;
	encoding->scale.q = 1;
	encoding->offset.p = 0;
	encoding->offset.q = 1;

	spec->spec_digits = digits;

	return SR_OK;
}

START_TEST(test_analog_to_float)
{
	int ret;
	unsigned int i;
	float f, fout;
	struct sr_channel ch;
	struct sr_datafeed_analog analog;
	struct sr_analog_encoding encoding;
	struct sr_analog_meaning meaning;
	struct sr_analog_spec spec;
	const float v[] = {-12.9, -333.999, 0, 3.1415, 29.7, 989898.121212};

	sr_analog_init_(&analog, &encoding, &meaning, &spec, 3);
	analog.num_samples = 1;
	analog.data = &f;
	meaning.channels = g_slist_append(NULL, &ch);

	for (i = 0; i < ARRAY_SIZE(v); i++) {
		fout = 19;
		f = v[i];
		ret = sr_analog_to_float(&analog, &fout);
		fail_unless(ret == SR_OK, "sr_analog_to_float() failed: %d.", ret);
		fail_unless(fabs(f - fout) <= 0.001, "%f != %f", f, fout);
	}
}
END_TEST

START_TEST(test_analog_to_float_null)
{
	int ret;
	float f, fout;
	struct sr_datafeed_analog analog;
	struct sr_analog_encoding encoding;
	struct sr_analog_meaning meaning;
	struct sr_analog_spec spec;

	f = G_PI;
	sr_analog_init_(&analog, &encoding, &meaning, &spec, 3);
	analog.num_samples = 1;
	analog.data = &f;

	ret = sr_analog_to_float(NULL, &fout);
	fail_unless(ret == SR_ERR_ARG);
	ret = sr_analog_to_float(&analog, NULL);
	fail_unless(ret == SR_ERR_ARG);
	ret = sr_analog_to_float(NULL, NULL);
	fail_unless(ret == SR_ERR_ARG);

	analog.data = NULL;
	ret = sr_analog_to_float(&analog, &fout);
	fail_unless(ret == SR_ERR_ARG);
	analog.data = &f;

	analog.meaning = NULL;
	ret = sr_analog_to_float(&analog, &fout);
	fail_unless(ret == SR_ERR_ARG);
	analog.meaning = &meaning;

	analog.encoding = NULL;
	ret = sr_analog_to_float(&analog, &fout);
	fail_unless(ret == SR_ERR_ARG);
	analog.encoding = &encoding;
}
END_TEST

START_TEST(test_analog_si_prefix)
{
	struct {
		float input_value;
		int input_digits;
		float output_value;
		int output_digits;
		const char *output_si_prefix;
	} v[] = {
		{   12.0     ,  0,  12.0  ,    0, ""  },
		{   12.0     ,  1,  12.0  ,    1, ""  },
		{   12.0     , -1,   0.012,    2, "k" },
		{ 1024.0     ,  0,   1.024,    3, "k" },
		{ 1024.0     , -1,   1.024,    2, "k" },
		{ 1024.0     , -3,   1.024,    0, "k" },
		{   12.0e5   ,  0,   1.2,      6, "M" },
		{    0.123456,  0,   0.123456, 0, ""  },
		{    0.123456,  1,   0.123456, 1, ""  },
		{    0.123456,  2,   0.123456, 2, ""  },
		{    0.123456,  3, 123.456,    0, "m" },
		{    0.123456,  4, 123.456,    1, "m" },
		{    0.123456,  5, 123.456,    2, "m" },
		{    0.123456,  6, 123.456,    3, "m" },
		{    0.123456,  7, 123.456,    4, "m" },
		{    0.0123  ,  4,  12.3,      1, "m" },
		{    0.00123 ,  5,   1.23,     2, "m" },
		{    0.000123,  4,   0.123,    1, "m" },
		{    0.000123,  5,   0.123,    2, "m" },
		{    0.000123,  6, 123.0,      0, "µ" },
		{    0.000123,  7, 123.0,      1, "µ" },
	};

	for (unsigned int i = 0; i < ARRAY_SIZE(v); i++) {
		float value = v[i].input_value;
		int digits = v[i].input_digits;
		const char *si_prefix = sr_analog_si_prefix(&value, &digits);

		fail_unless(fabs(value - v[i].output_value) <= 0.00001,
			"sr_analog_si_prefix() unexpected output value %f (i=%d).",
			value , i);
		fail_unless(digits == v[i].output_digits,
			"sr_analog_si_prefix() unexpected output digits %d (i=%d).",
			digits, i);
		fail_unless(!strcmp(si_prefix, v[i].output_si_prefix),
			"sr_analog_si_prefix() unexpected output prefix \"%s\" (i=%d).",
			si_prefix, i);
	}
}
END_TEST

START_TEST(test_analog_si_prefix_null)
{
	float value = 1.23;
	int digits = 1;
	const char *si_prefix;

	si_prefix = sr_analog_si_prefix(NULL, &digits);
	fail_unless(!strcmp(si_prefix, ""));
	si_prefix = sr_analog_si_prefix(&value, NULL);
	fail_unless(!strcmp(si_prefix, ""));
	si_prefix = sr_analog_si_prefix(NULL, NULL);
	fail_unless(!strcmp(si_prefix, ""));
}
END_TEST

START_TEST(test_analog_unit_to_string)
{
	int ret;
	unsigned int i;
	char *result;
	struct sr_datafeed_analog analog;
	struct sr_analog_encoding encoding;
	struct sr_analog_meaning meaning;
	struct sr_analog_spec spec;
	const char *r[] = {"V RMS"};

	sr_analog_init_(&analog, &encoding, &meaning, &spec, 3);

	for (i = 0; i < ARRAY_SIZE(r); i++) {
		meaning.unit = SR_UNIT_VOLT;
		meaning.mqflags = SR_MQFLAG_RMS;
		ret = sr_analog_unit_to_string(&analog, &result);
		fail_unless(ret == SR_OK);
		fail_unless(result != NULL);
		fail_unless(!strcmp(result, r[i]), "%s != %s", result, r[i]);
		g_free(result);
	}
}
END_TEST

START_TEST(test_analog_unit_to_string_null)
{
	int ret;
	char *result;
	struct sr_datafeed_analog analog;
	struct sr_analog_encoding encoding;
	struct sr_analog_meaning meaning;
	struct sr_analog_spec spec;

	sr_analog_init_(&analog, &encoding, &meaning, &spec, 3);

	meaning.unit = SR_UNIT_VOLT;
	meaning.mqflags = SR_MQFLAG_RMS;

	ret = sr_analog_unit_to_string(NULL, &result);
	fail_unless(ret == SR_ERR_ARG);
	ret = sr_analog_unit_to_string(&analog, NULL);
	fail_unless(ret == SR_ERR_ARG);
	ret = sr_analog_unit_to_string(NULL, NULL);
	fail_unless(ret == SR_ERR_ARG);

	analog.meaning = NULL;
	ret = sr_analog_unit_to_string(&analog, &result);
	fail_unless(ret == SR_ERR_ARG);
}
END_TEST

START_TEST(test_set_rational)
{
	unsigned int i;
	struct sr_rational r;
	const int64_t p[] = {0, 1, -5, INT64_MAX};
	const uint64_t q[] = {0, 2, 7, UINT64_MAX};

	for (i = 0; i < ARRAY_SIZE(p); i++) {
		sr_rational_set(&r, p[i], q[i]);
		fail_unless(r.p == p[i] && r.q == q[i]);
	}
}
END_TEST

START_TEST(test_set_rational_null)
{
	sr_rational_set(NULL, 5, 7);
}
END_TEST

START_TEST(test_cmp_rational)
{
	const struct sr_rational r[] = { { 1, 1 },
		{ 2, 2 },
		{ 1000, 1000 },
		{ INT64_MAX, INT64_MAX },
		{ 1, 4 },
		{ 2, 8 },
		{ INT64_MAX, UINT64_MAX },
		{ INT64_MIN, UINT64_MAX },
	};

	fail_unless(sr_rational_eq(&r[0], &r[0]) == 1);
	fail_unless(sr_rational_eq(&r[0], &r[1]) == 1);
	fail_unless(sr_rational_eq(&r[1], &r[2]) == 1);
	fail_unless(sr_rational_eq(&r[2], &r[3]) == 1);
	fail_unless(sr_rational_eq(&r[3], &r[3]) == 1);

	fail_unless(sr_rational_eq(&r[4], &r[4]) == 1);
	fail_unless(sr_rational_eq(&r[4], &r[5]) == 1);
	fail_unless(sr_rational_eq(&r[5], &r[5]) == 1);

	fail_unless(sr_rational_eq(&r[6], &r[6]) == 1);
	fail_unless(sr_rational_eq(&r[7], &r[7]) == 1);

	fail_unless(sr_rational_eq(&r[1], &r[4]) == 0);
}
END_TEST

START_TEST(test_mult_rational)
{
	const struct sr_rational r[][3] = {
		/*   a    *    b    =    c   */
		{ { 1, 1 }, { 1, 1 }, { 1, 1 }},
		{ { 2, 1 }, { 3, 1 }, { 6, 1 }},
		{ { 1, 2 }, { 2, 1 }, { 1, 1 }},
		/* Test negative numbers */
		{ { -1, 2 }, { 2, 1 }, { -1, 1 }},
		{ { -1, 2 }, { -2, 1 }, { 1, 1 }},
		{ { -(1ll<<20), (1ll<<10) }, { -(1ll<<20), 1 }, { (1ll<<30), 1 }},
		/* Test reduction */
		{ { INT32_MAX, (1ll<<12) }, { (1<<2), 1 }, { INT32_MAX, (1ll<<10) }},
		{ { INT64_MAX, (1ll<<63) }, { (1<<3), 1 }, { INT64_MAX, (1ll<<60) }},
		/* Test large numbers */
		{ {  (1ll<<40), (1ll<<10) }, {  (1ll<<30), 1 }, { (1ll<<60), 1 }},
		{ { -(1ll<<40), (1ll<<10) }, { -(1ll<<30), 1 }, { (1ll<<60), 1 }},

		{ { 1000, 1 }, { 8000, 1 }, { 8000000, 1 }},
		{ { 10000, 1 }, { 80000, 1 }, { 800000000, 1 }},
		{ { 10000*3, 4 }, { 80000*3, 1 }, { 200000000*9, 1 }},
		{ { 1, 1000 }, { 1, 8000 }, { 1, 8000000 }},
		{ { 1, 10000 }, { 1, 80000 }, { 1, 800000000 }},
		{ { 4, 10000*3 }, { 1, 80000*3 }, { 1, 200000000*9 }},

		{ { -10000*3, 4 }, { 80000*3, 1 }, { -200000000*9, 1 }},
		{ { 10000*3, 4 }, { -80000*3, 1 }, { -200000000*9, 1 }},
	};

	for (unsigned i = 0; i < ARRAY_SIZE(r); i++) {
		struct sr_rational res;

		int rc = sr_rational_mult(&res, &r[i][0], &r[i][1]);
		fail_unless(rc == SR_OK);
		fail_unless(sr_rational_eq(&res, &r[i][2]) == 1,
			"sr_rational_mult() failed: [%d] %ld/%lu != %ld/%lu.",
			i, res.p, res.q, r[i][2].p, r[i][2].q);
	}
}
END_TEST

START_TEST(test_div_rational)
{
	const struct sr_rational r[][3] = {
		/*   a    *    b    =    c   */
		{ { 1, 1 }, { 1, 1 }, { 1, 1 }},
		{ { 2, 1 }, { 1, 3 }, { 6, 1 }},
		{ { 1, 2 }, { 1, 2 }, { 1, 1 }},
		/* Test negative numbers */
		{ { -1, 2 }, { 1, 2 }, { -1, 1 }},
		{ { -1, 2 }, { -1, 2 }, { 1, 1 }},
		{ { -(1ll<<20), (1ll<<10) }, { -1, (1ll<<20) }, { (1ll<<30), 1 }},
		/* Test reduction */
		{ { INT32_MAX, (1ll<<12) }, { 1, (1<<2) }, { INT32_MAX, (1ll<<10) }},
		{ { INT64_MAX, (1ll<<63) }, { 1, (1<<3) }, { INT64_MAX, (1ll<<60) }},
		/* Test large numbers */
		{ {  (1ll<<40), (1ll<<10) }, {  1, (1ll<<30) }, { (1ll<<60), 1 }},
		{ { -(1ll<<40), (1ll<<10) }, { -1, (1ll<<30) }, { (1ll<<60), 1 }},

		{ { 10000*3, 4 }, { 1, 80000*3 }, { 200000000*9, 1 }},
		{ { 4, 10000*3 }, { 80000*3, 1 }, { 1, 200000000*9 }},

		{ { -10000*3, 4 }, { 1, 80000*3 }, { -200000000*9, 1 }},
		{ { 10000*3, 4 }, { -1, 80000*3 }, { -200000000*9, 1 }},
	};

	for (unsigned i = 0; i < ARRAY_SIZE(r); i++) {
		struct sr_rational res;

		int rc = sr_rational_div(&res, &r[i][0], &r[i][1]);
		fail_unless(rc == SR_OK);
		fail_unless(sr_rational_eq(&res, &r[i][2]) == 1,
			"sr_rational_mult() failed: [%d] %ld/%lu != %ld/%lu.",
			i, res.p, res.q, r[i][2].p, r[i][2].q);
	}

	{
		struct sr_rational res;
		int rc = sr_rational_div(&res, &r[0][0], &((struct sr_rational){ 0, 5 }));

		fail_unless(rc == SR_ERR_ARG);
	}
}
END_TEST

Suite *suite_analog(void)
{
	Suite *s;
	TCase *tc;

	s = suite_create("analog");

	tc = tcase_create("analog_to_float");
	tcase_add_test(tc, test_analog_to_float);
	tcase_add_test(tc, test_analog_to_float_null);
	tcase_add_test(tc, test_analog_si_prefix);
	tcase_add_test(tc, test_analog_si_prefix_null);
	tcase_add_test(tc, test_analog_unit_to_string);
	tcase_add_test(tc, test_analog_unit_to_string_null);
	tcase_add_test(tc, test_set_rational);
	tcase_add_test(tc, test_set_rational_null);
	tcase_add_test(tc, test_cmp_rational);
	tcase_add_test(tc, test_mult_rational);
	tcase_add_test(tc, test_div_rational);
	suite_add_tcase(s, tc);

	return s;
}
Commit	Line	Data
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
2ea1fdf1	17	* along with this program; if not, see <http://www.gnu.org/licenses/>.
6b71bf1b UH	18	*/
	19
	20	#include <config.h>
	21	#include <stdlib.h>
	22	#include <math.h>
	23	#include <check.h>
	24	#include <libsigrok/libsigrok.h>
	25	#include "lib.h"
	26
	27	static int sr_analog_init_(struct sr_datafeed_analog *analog,
	28	struct sr_analog_encoding *encoding,
	29	struct sr_analog_meaning *meaning,
	30	struct sr_analog_spec *spec,
	31	int digits)
	32	{
	33	memset(analog, 0, sizeof(*analog));
	34	memset(encoding, 0, sizeof(*encoding));
	35	memset(meaning, 0, sizeof(*meaning));
	36	memset(spec, 0, sizeof(*spec));
	37
	38	analog->encoding = encoding;
	39	analog->meaning = meaning;
	40	analog->spec = spec;
	41
	42	encoding->unitsize = sizeof(float);
	43	encoding->is_float = TRUE;
	44	#ifdef WORDS_BIGENDIAN
	45	encoding->is_bigendian = TRUE;
	46	#else
	47	encoding->is_bigendian = FALSE;
	48	#endif
	49	encoding->digits = digits;
	50	encoding->is_digits_decimal = TRUE;
	51	encoding->scale.p = 1;
	52	encoding->scale.q = 1;
	53	encoding->offset.p = 0;
	54	encoding->offset.q = 1;
	55
	56	spec->spec_digits = digits;
	57
	58	return SR_OK;
	59	}
	60
	61	START_TEST(test_analog_to_float)
	62	{
	63	int ret;
	64	unsigned int i;
	65	float f, fout;
	66	struct sr_channel ch;
	67	struct sr_datafeed_analog analog;
	68	struct sr_analog_encoding encoding;
	69	struct sr_analog_meaning meaning;
	70	struct sr_analog_spec spec;
	71	const float v[] = {-12.9, -333.999, 0, 3.1415, 29.7, 989898.121212};
	72
	73	sr_analog_init_(&analog, &encoding, &meaning, &spec, 3);
	74	analog.num_samples = 1;
	75	analog.data = &f;
	76	meaning.channels = g_slist_append(NULL, &ch);
	77
	78	for (i = 0; i < ARRAY_SIZE(v); i++) {
	79	fout = 19;
	80	f = v[i];
	81	ret = sr_analog_to_float(&analog, &fout);
82	fail_unless(ret == SR_OK, "sr_analog_to_float() failed: %d.", ret);
83	fail_unless(fabs(f - fout) <= 0.001, "%f != %f", f, fout);
84	}
85	}
86	END_TEST
87
88	START_TEST(test_analog_to_float_null)
89	{
90	int ret;
91	float f, fout;
92	struct sr_datafeed_analog analog;
93	struct sr_analog_encoding encoding;
94	struct sr_analog_meaning meaning;
95	struct sr_analog_spec spec;
96
97	f = G_PI;
98	sr_analog_init_(&analog, &encoding, &meaning, &spec, 3);
99	analog.num_samples = 1;
100	analog.data = &f;
101
102	ret = sr_analog_to_float(NULL, &fout);
103	fail_unless(ret == SR_ERR_ARG);
104	ret = sr_analog_to_float(&analog, NULL);
105	fail_unless(ret == SR_ERR_ARG);
106	ret = sr_analog_to_float(NULL, NULL);
107	fail_unless(ret == SR_ERR_ARG);
108
109	analog.data = NULL;
110	ret = sr_analog_to_float(&analog, &fout);
111	fail_unless(ret == SR_ERR_ARG);
112	analog.data = &f;
113
114	analog.meaning = NULL;
115	ret = sr_analog_to_float(&analog, &fout);
116	fail_unless(ret == SR_ERR_ARG);
117	analog.meaning = &meaning;
118
119	analog.encoding = NULL;
120	ret = sr_analog_to_float(&analog, &fout);
121	fail_unless(ret == SR_ERR_ARG);
122	analog.encoding = &encoding;
123	}
124	END_TEST
125
962172e4 AJ	126	START_TEST(test_analog_si_prefix)
	127	{
	128	struct {
	129	float input_value;
	130	int input_digits;
	131	float output_value;
	132	int output_digits;
	133	const char *output_si_prefix;
	134	} v[] = {
	135	{ 12.0 , 0, 12.0 , 0, "" },
	136	{ 12.0 , 1, 12.0 , 1, "" },
	137	{ 12.0 , -1, 0.012, 2, "k" },
	138	{ 1024.0 , 0, 1.024, 3, "k" },
	139	{ 1024.0 , -1, 1.024, 2, "k" },
	140	{ 1024.0 , -3, 1.024, 0, "k" },
	141	{ 12.0e5 , 0, 1.2, 6, "M" },
	142	{ 0.123456, 0, 0.123456, 0, "" },
	143	{ 0.123456, 1, 0.123456, 1, "" },
	144	{ 0.123456, 2, 0.123456, 2, "" },
	145	{ 0.123456, 3, 123.456, 0, "m" },
	146	{ 0.123456, 4, 123.456, 1, "m" },
	147	{ 0.123456, 5, 123.456, 2, "m" },
	148	{ 0.123456, 6, 123.456, 3, "m" },
	149	{ 0.123456, 7, 123.456, 4, "m" },
	150	{ 0.0123 , 4, 12.3, 1, "m" },
	151	{ 0.00123 , 5, 1.23, 2, "m" },
	152	{ 0.000123, 4, 0.123, 1, "m" },
	153	{ 0.000123, 5, 0.123, 2, "m" },
	154	{ 0.000123, 6, 123.0, 0, "µ" },
	155	{ 0.000123, 7, 123.0, 1, "µ" },
	156	};
	157
	158	for (unsigned int i = 0; i < ARRAY_SIZE(v); i++) {
	159	float value = v[i].input_value;
	160	int digits = v[i].input_digits;
	161	const char *si_prefix = sr_analog_si_prefix(&value, &digits);
	162
	163	fail_unless(fabs(value - v[i].output_value) <= 0.00001,
	164	"sr_analog_si_prefix() unexpected output value %f (i=%d).",
	165	value , i);
	166	fail_unless(digits == v[i].output_digits,
	167	"sr_analog_si_prefix() unexpected output digits %d (i=%d).",
	168	digits, i);
	169	fail_unless(!strcmp(si_prefix, v[i].output_si_prefix),
	170	"sr_analog_si_prefix() unexpected output prefix \"%s\" (i=%d).",
	171	si_prefix, i);
	172	}
	173	}
	174	END_TEST
	175
	176	START_TEST(test_analog_si_prefix_null)
	177	{
	178	float value = 1.23;
	179	int digits = 1;
	180	const char *si_prefix;
	181
	182	si_prefix = sr_analog_si_prefix(NULL, &digits);
	183	fail_unless(!strcmp(si_prefix, ""));
	184	si_prefix = sr_analog_si_prefix(&value, NULL);
	185	fail_unless(!strcmp(si_prefix, ""));
	186	si_prefix = sr_analog_si_prefix(NULL, NULL);
	187	fail_unless(!strcmp(si_prefix, ""));
	188	}
	189	END_TEST
190
6b71bf1b UH	191	START_TEST(test_analog_unit_to_string)
	192	{
	193	int ret;
	194	unsigned int i;
	195	char *result;
	196	struct sr_datafeed_analog analog;
	197	struct sr_analog_encoding encoding;
	198	struct sr_analog_meaning meaning;
	199	struct sr_analog_spec spec;
72cb20ed	200	const char *r[] = {"V RMS"};
6b71bf1b UH	201
	202	sr_analog_init_(&analog, &encoding, &meaning, &spec, 3);
	203
72cb20ed	204	for (i = 0; i < ARRAY_SIZE(r); i++) {
6b71bf1b UH	205	meaning.unit = SR_UNIT_VOLT;
	206	meaning.mqflags = SR_MQFLAG_RMS;
	207	ret = sr_analog_unit_to_string(&analog, &result);
	208	fail_unless(ret == SR_OK);
	209	fail_unless(result != NULL);
	210	fail_unless(!strcmp(result, r[i]), "%s != %s", result, r[i]);
	211	g_free(result);
	212	}
	213	}
	214	END_TEST
	215
	216	START_TEST(test_analog_unit_to_string_null)
	217	{
	218	int ret;
	219	char *result;
	220	struct sr_datafeed_analog analog;
	221	struct sr_analog_encoding encoding;
	222	struct sr_analog_meaning meaning;
	223	struct sr_analog_spec spec;
	224
	225	sr_analog_init_(&analog, &encoding, &meaning, &spec, 3);
	226
	227	meaning.unit = SR_UNIT_VOLT;
	228	meaning.mqflags = SR_MQFLAG_RMS;
	229
	230	ret = sr_analog_unit_to_string(NULL, &result);
	231	fail_unless(ret == SR_ERR_ARG);
	232	ret = sr_analog_unit_to_string(&analog, NULL);
	233	fail_unless(ret == SR_ERR_ARG);
	234	ret = sr_analog_unit_to_string(NULL, NULL);
	235	fail_unless(ret == SR_ERR_ARG);
	236
	237	analog.meaning = NULL;
	238	ret = sr_analog_unit_to_string(&analog, &result);
	239	fail_unless(ret == SR_ERR_ARG);
	240	}
	241	END_TEST
	242
	243	START_TEST(test_set_rational)
	244	{
	245	unsigned int i;
	246	struct sr_rational r;
	247	const int64_t p[] = {0, 1, -5, INT64_MAX};
	248	const uint64_t q[] = {0, 2, 7, UINT64_MAX};
	249
	250	for (i = 0; i < ARRAY_SIZE(p); i++) {
	251	sr_rational_set(&r, p[i], q[i]);
	252	fail_unless(r.p == p[i] && r.q == q[i]);
	253	}
	254	}
	255	END_TEST
	256
	257	START_TEST(test_set_rational_null)
	258	{
	259	sr_rational_set(NULL, 5, 7);
	260	}
	261	END_TEST
	262
bdba3626 SB	263	START_TEST(test_cmp_rational)
	264	{
	265	const struct sr_rational r[] = { { 1, 1 },
	266	{ 2, 2 },
	267	{ 1000, 1000 },
	268	{ INT64_MAX, INT64_MAX },
	269	{ 1, 4 },
	270	{ 2, 8 },
	271	{ INT64_MAX, UINT64_MAX },
	272	{ INT64_MIN, UINT64_MAX },
	273	};
	274
	275	fail_unless(sr_rational_eq(&r[0], &r[0]) == 1);
	276	fail_unless(sr_rational_eq(&r[0], &r[1]) == 1);
	277	fail_unless(sr_rational_eq(&r[1], &r[2]) == 1);
	278	fail_unless(sr_rational_eq(&r[2], &r[3]) == 1);
	279	fail_unless(sr_rational_eq(&r[3], &r[3]) == 1);
	280
	281	fail_unless(sr_rational_eq(&r[4], &r[4]) == 1);
	282	fail_unless(sr_rational_eq(&r[4], &r[5]) == 1);
	283	fail_unless(sr_rational_eq(&r[5], &r[5]) == 1);
	284
	285	fail_unless(sr_rational_eq(&r[6], &r[6]) == 1);
	286	fail_unless(sr_rational_eq(&r[7], &r[7]) == 1);
	287
	288	fail_unless(sr_rational_eq(&r[1], &r[4]) == 0);
	289	}
	290	END_TEST
	291
ee1b6054 SB	292	START_TEST(test_mult_rational)
	293	{
	294	const struct sr_rational r[][3] = {
	295	/* a * b = c */
	296	{ { 1, 1 }, { 1, 1 }, { 1, 1 }},
	297	{ { 2, 1 }, { 3, 1 }, { 6, 1 }},
	298	{ { 1, 2 }, { 2, 1 }, { 1, 1 }},
	299	/* Test negative numbers */
	300	{ { -1, 2 }, { 2, 1 }, { -1, 1 }},
	301	{ { -1, 2 }, { -2, 1 }, { 1, 1 }},
	302	{ { -(1ll<<20), (1ll<<10) }, { -(1ll<<20), 1 }, { (1ll<<30), 1 }},
	303	/* Test reduction */
	304	{ { INT32_MAX, (1ll<<12) }, { (1<<2), 1 }, { INT32_MAX, (1ll<<10) }},
	305	{ { INT64_MAX, (1ll<<63) }, { (1<<3), 1 }, { INT64_MAX, (1ll<<60) }},
	306	/* Test large numbers */
	307	{ { (1ll<<40), (1ll<<10) }, { (1ll<<30), 1 }, { (1ll<<60), 1 }},
	308	{ { -(1ll<<40), (1ll<<10) }, { -(1ll<<30), 1 }, { (1ll<<60), 1 }},
	309
	310	{ { 1000, 1 }, { 8000, 1 }, { 8000000, 1 }},
	311	{ { 10000, 1 }, { 80000, 1 }, { 800000000, 1 }},
	312	{ { 100003, 4 }, { 800003, 1 }, { 200000000*9, 1 }},
	313	{ { 1, 1000 }, { 1, 8000 }, { 1, 8000000 }},
	314	{ { 1, 10000 }, { 1, 80000 }, { 1, 800000000 }},
	315	{ { 4, 100003 }, { 1, 800003 }, { 1, 200000000*9 }},
	316
	317	{ { -100003, 4 }, { 800003, 1 }, { -200000000*9, 1 }},
	318	{ { 100003, 4 }, { -800003, 1 }, { -200000000*9, 1 }},
	319	};
	320
	321	for (unsigned i = 0; i < ARRAY_SIZE(r); i++) {
	322	struct sr_rational res;
	323
	324	int rc = sr_rational_mult(&res, &r[i][0], &r[i][1]);
	325	fail_unless(rc == SR_OK);
	326	fail_unless(sr_rational_eq(&res, &r[i][2]) == 1,
	327	"sr_rational_mult() failed: [%d] %ld/%lu != %ld/%lu.",
	328	i, res.p, res.q, r[i][2].p, r[i][2].q);
	329	}
	330	}
	331	END_TEST
	332
17d5a11c SB	333	START_TEST(test_div_rational)
	334	{
	335	const struct sr_rational r[][3] = {
	336	/* a * b = c */
	337	{ { 1, 1 }, { 1, 1 }, { 1, 1 }},
	338	{ { 2, 1 }, { 1, 3 }, { 6, 1 }},
	339	{ { 1, 2 }, { 1, 2 }, { 1, 1 }},
	340	/* Test negative numbers */
	341	{ { -1, 2 }, { 1, 2 }, { -1, 1 }},
	342	{ { -1, 2 }, { -1, 2 }, { 1, 1 }},
	343	{ { -(1ll<<20), (1ll<<10) }, { -1, (1ll<<20) }, { (1ll<<30), 1 }},
	344	/* Test reduction */
	345	{ { INT32_MAX, (1ll<<12) }, { 1, (1<<2) }, { INT32_MAX, (1ll<<10) }},
	346	{ { INT64_MAX, (1ll<<63) }, { 1, (1<<3) }, { INT64_MAX, (1ll<<60) }},
	347	/* Test large numbers */
	348	{ { (1ll<<40), (1ll<<10) }, { 1, (1ll<<30) }, { (1ll<<60), 1 }},
	349	{ { -(1ll<<40), (1ll<<10) }, { -1, (1ll<<30) }, { (1ll<<60), 1 }},
	350
	351	{ { 100003, 4 }, { 1, 800003 }, { 200000000*9, 1 }},
	352	{ { 4, 100003 }, { 800003, 1 }, { 1, 200000000*9 }},
	353
	354	{ { -100003, 4 }, { 1, 800003 }, { -200000000*9, 1 }},
	355	{ { 100003, 4 }, { -1, 800003 }, { -200000000*9, 1 }},
	356	};
	357
	358	for (unsigned i = 0; i < ARRAY_SIZE(r); i++) {
	359	struct sr_rational res;
	360
	361	int rc = sr_rational_div(&res, &r[i][0], &r[i][1]);
	362	fail_unless(rc == SR_OK);
	363	fail_unless(sr_rational_eq(&res, &r[i][2]) == 1,
	364	"sr_rational_mult() failed: [%d] %ld/%lu != %ld/%lu.",
	365	i, res.p, res.q, r[i][2].p, r[i][2].q);
	366	}
	367
	368	{
	369	struct sr_rational res;
	370	int rc = sr_rational_div(&res, &r[0][0], &((struct sr_rational){ 0, 5 }));
	371
	372	fail_unless(rc == SR_ERR_ARG);
	373	}
	374	}
	375	END_TEST
	376
6b71bf1b UH	377	Suite *suite_analog(void)
	378	{
	379	Suite *s;
	380	TCase *tc;
	381
	382	s = suite_create("analog");
	383
	384	tc = tcase_create("analog_to_float");
	385	tcase_add_test(tc, test_analog_to_float);
	386	tcase_add_test(tc, test_analog_to_float_null);
962172e4 AJ	387	tcase_add_test(tc, test_analog_si_prefix);
962172e4 AJ	388	tcase_add_test(tc, test_analog_si_prefix_null);
6b71bf1b UH	389	tcase_add_test(tc, test_analog_unit_to_string);
	390	tcase_add_test(tc, test_analog_unit_to_string_null);
	391	tcase_add_test(tc, test_set_rational);
	392	tcase_add_test(tc, test_set_rational_null);
bdba3626	393	tcase_add_test(tc, test_cmp_rational);
ee1b6054	394	tcase_add_test(tc, test_mult_rational);
17d5a11c	395	tcase_add_test(tc, test_div_rational);
6b71bf1b UH	396	suite_add_tcase(s, tc);
	397
	398	return s;
	399	}