X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;ds=inline;f=tests%2Fanalog.c;h=85c6afcd976b80577bc140d3eb97a39ec0ea213a;hb=aedbf89d85cc7efa1263f5e210c3b78097ad471a;hp=3e8fd494c2c80616b012e99aed9c4a81c40aba18;hpb=17d5a11c69ebd7dd0a62a6e2466d3d8ce05b9d03;p=libsigrok.git
diff --git a/tests/analog.c b/tests/analog.c
index 3e8fd494..85c6afcd 100644
--- a/tests/analog.c
+++ b/tests/analog.c
@@ -14,8 +14,7 @@
* 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
+ * along with this program; if not, see .
*/
#include
@@ -124,6 +123,71 @@ START_TEST(test_analog_to_float_null)
}
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;
@@ -320,6 +384,8 @@ Suite *suite_analog(void)
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);