2 * This file contains test for both mfptoa and mfptoms (which uses dolfptoa),
3 * since all these functions are very similar. It also tests ulfptoa, which is
8 #include "ntp_stdlib.h"
9 #include "ntp_calendar.h"
14 static const int LFP_MAX_PRECISION = 10;
15 static const int LFP_MAX_PRECISION_MS = 7;
17 static const int ONE_FOURTH = 1073741824; // (1 << 30)
18 static const int HALF = (1 << 31);
19 static const int THREE_FOURTH = -1073741824;
20 static const int HALF_PROMILLE_UP = 2147484; // slightly more than 0.0005
21 static const int HALF_PROMILLE_DOWN = 2147483; // slightly less than 0.0005
23 void test_PositiveInteger(void) {
24 l_fp test = {200, 0}; // exact 200.0000000000
26 TEST_ASSERT_EQUAL_STRING("200.0000000000", mfptoa(test.l_ui, test.l_uf, LFP_MAX_PRECISION));
27 TEST_ASSERT_EQUAL_STRING("200000.0000000", mfptoms(test.l_ui, test.l_uf, LFP_MAX_PRECISION_MS));
30 void test_NegativeInteger(void) {
31 l_fp test = {-100, 0}; // -100
33 TEST_ASSERT_EQUAL_STRING("-100.0000000000", lfptoa(&test, LFP_MAX_PRECISION));
34 TEST_ASSERT_EQUAL_STRING("-100000.0000000", lfptoms(&test, LFP_MAX_PRECISION_MS));
37 void test_PositiveIntegerWithFraction(void) {
38 l_fp test = {200, ONE_FOURTH}; // 200.25
40 TEST_ASSERT_EQUAL_STRING("200.2500000000", lfptoa(&test, LFP_MAX_PRECISION));
41 TEST_ASSERT_EQUAL_STRING("200250.0000000", lfptoms(&test, LFP_MAX_PRECISION_MS));
44 void test_NegativeIntegerWithFraction(void) {
45 l_fp test = {-100, ONE_FOURTH}; // -99.75
47 TEST_ASSERT_EQUAL_STRING("-99.7500000000", lfptoa(&test, LFP_MAX_PRECISION));
48 TEST_ASSERT_EQUAL_STRING("-99750.0000000", lfptoms(&test, LFP_MAX_PRECISION_MS));
51 void test_RoundingDownToInteger(void) {
52 l_fp test = {10, ONE_FOURTH}; // 10.25
54 TEST_ASSERT_EQUAL_STRING("10", lfptoa(&test, 0));
55 TEST_ASSERT_EQUAL_STRING("10250", lfptoms(&test, 0));
58 void test_RoundingMiddleToInteger(void) {
59 l_fp test = {10, HALF}; // 10.5
61 TEST_ASSERT_EQUAL_STRING("11", lfptoa(&test, 0));
62 TEST_ASSERT_EQUAL_STRING("10500", lfptoms(&test, 0));
65 void test_RoundingUpToInteger(void) {
66 l_fp test = {5, THREE_FOURTH}; // 5.75
68 TEST_ASSERT_EQUAL_STRING("6", lfptoa(&test, 0));
69 TEST_ASSERT_EQUAL_STRING("5750", lfptoms(&test, 0));
72 void test_SingleDecimal(void) {
73 l_fp test = {8, ONE_FOURTH}; // 8.25
75 TEST_ASSERT_EQUAL_STRING("8.3", lfptoa(&test, 1));
76 TEST_ASSERT_EQUAL_STRING("8250.0", lfptoms(&test, 1));
79 void test_MillisecondsRoundingUp(void) {
80 l_fp test = {1, HALF_PROMILLE_UP}; //slightly more than 1.0005
82 TEST_ASSERT_EQUAL_STRING("1.0", lfptoa(&test, 1));
84 TEST_ASSERT_EQUAL_STRING("1000.5", lfptoms(&test, 1));
85 TEST_ASSERT_EQUAL_STRING("1001", lfptoms(&test, 0));
88 void test_MillisecondsRoundingDown(void) {
89 l_fp test = {1, HALF_PROMILLE_DOWN}; // slightly less than 1.0005
91 TEST_ASSERT_EQUAL_STRING("1.0", lfptoa(&test, 1));
93 TEST_ASSERT_EQUAL_STRING("1000.5", lfptoms(&test, 1));
94 TEST_ASSERT_EQUAL_STRING("1000", lfptoms(&test, 0));
97 void test_UnsignedInteger(void) {
98 l_fp test = {3000000000UL, 0};
100 TEST_ASSERT_EQUAL_STRING("3000000000.0", ulfptoa(&test, 1));