[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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#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 = -1; 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
	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	{ { 100003, 4 }, { 800003, 1 }, { 200000000*9, 1 }},
	314	{ { 1, 1000 }, { 1, 8000 }, { 1, 8000000 }},
	315	{ { 1, 10000 }, { 1, 80000 }, { 1, 800000000 }},
	316	{ { 4, 100003 }, { 1, 800003 }, { 1, 200000000*9 }},
	317
	318	{ { -100003, 4 }, { 800003, 1 }, { -200000000*9, 1 }},
	319	{ { 100003, 4 }, { -800003, 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	{ { 100003, 4 }, { 1, 800003 }, { 200000000*9, 1 }},
	353	{ { 4, 100003 }, { 800003, 1 }, { 1, 200000000*9 }},
	354
	355	{ { -100003, 4 }, { 1, 800003 }, { -200000000*9, 1 }},
	356	{ { 100003, 4 }, { -1, 800003 }, { -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);
962172e4 AJ	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	}