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
7 #include "g_libntptest.h"
13 class lfptostrTest : public libntptest {
15 static const int LFP_MAX_PRECISION = 10;
16 static const int LFP_MAX_PRECISION_MS = 7;
18 static const int ONE_FOURTH = 1073741824; // (1 << 30)
19 static const int HALF = (1 << 31);
20 static const int THREE_FOURTH = -ONE_FOURTH;
21 static const int HALF_PROMILLE_UP = 2147484; // slightly more than 0.0005
22 static const int HALF_PROMILLE_DOWN = 2147483; // slightly less than 0.0005
25 TEST_F(lfptostrTest, PositiveInteger) {
26 l_fp test = {200, 0}; // exact 200.0000000000
28 EXPECT_STREQ("200.0000000000", mfptoa(test.l_ui, test.l_uf, LFP_MAX_PRECISION));
29 EXPECT_STREQ("200000.0000000", mfptoms(test.l_ui, test.l_uf, LFP_MAX_PRECISION_MS));
32 TEST_F(lfptostrTest, NegativeInteger) {
33 l_fp test = {-100, 0}; // -100
35 EXPECT_STREQ("-100.0000000000", lfptoa(&test, LFP_MAX_PRECISION));
36 EXPECT_STREQ("-100000.0000000", lfptoms(&test, LFP_MAX_PRECISION_MS));
39 TEST_F(lfptostrTest, PositiveIntegerWithFraction) {
40 l_fp test = {200, ONE_FOURTH}; // 200.25
42 EXPECT_STREQ("200.2500000000", lfptoa(&test, LFP_MAX_PRECISION));
43 EXPECT_STREQ("200250.0000000", lfptoms(&test, LFP_MAX_PRECISION_MS));
46 TEST_F(lfptostrTest, NegativeIntegerWithFraction) {
47 l_fp test = {-100, ONE_FOURTH}; // -99.75
49 EXPECT_STREQ("-99.7500000000", lfptoa(&test, LFP_MAX_PRECISION));
50 EXPECT_STREQ("-99750.0000000", lfptoms(&test, LFP_MAX_PRECISION_MS));
53 TEST_F(lfptostrTest, RoundingDownToInteger) {
54 l_fp test = {10, ONE_FOURTH}; // 10.25
56 EXPECT_STREQ("10", lfptoa(&test, 0));
57 EXPECT_STREQ("10250", lfptoms(&test, 0));
60 TEST_F(lfptostrTest, RoundingMiddleToInteger) {
61 l_fp test = {10, HALF}; // 10.5
63 EXPECT_STREQ("11", lfptoa(&test, 0));
64 EXPECT_STREQ("10500", lfptoms(&test, 0));
67 TEST_F(lfptostrTest, RoundingUpToInteger) {
68 l_fp test = {5, THREE_FOURTH}; // 5.75
70 EXPECT_STREQ("6", lfptoa(&test, 0));
71 EXPECT_STREQ("5750", lfptoms(&test, 0));
74 TEST_F(lfptostrTest, SingleDecimal) {
75 l_fp test = {8, ONE_FOURTH}; // 8.25
77 EXPECT_STREQ("8.3", lfptoa(&test, 1));
78 EXPECT_STREQ("8250.0", lfptoms(&test, 1));
81 TEST_F(lfptostrTest, MillisecondsRoundingUp) {
82 l_fp test = {1, HALF_PROMILLE_UP}; //slightly more than 1.0005
84 EXPECT_STREQ("1.0", lfptoa(&test, 1));
86 EXPECT_STREQ("1000.5", lfptoms(&test, 1));
87 EXPECT_STREQ("1001", lfptoms(&test, 0));
90 TEST_F(lfptostrTest, MillisecondsRoundingDown) {
91 l_fp test = {1, HALF_PROMILLE_DOWN}; // slightly less than 1.0005
93 EXPECT_STREQ("1.0", lfptoa(&test, 1));
95 EXPECT_STREQ("1000.5", lfptoms(&test, 1));
96 EXPECT_STREQ("1000", lfptoms(&test, 0));
99 TEST_F(lfptostrTest, UnsignedInteger) {
100 l_fp test = {3000000000UL, 0};
102 EXPECT_STREQ("3000000000.0", ulfptoa(&test, 1));