2 * This file contains test for both fptoa and fptoms (which uses dofptoa),
3 * since all these functions are very similar.
6 #include "g_libntptest.h"
12 class sfptostr : public libntptest {
14 static const int SFP_MAX_PRECISION = 6;
17 TEST_F(sfptostr, PositiveInteger) {
18 s_fp test = 300 << 16; // exact 300.000000
20 EXPECT_STREQ("300.000000", fptoa(test, SFP_MAX_PRECISION));
21 EXPECT_STREQ("300000.000", fptoms(test, SFP_MAX_PRECISION));
24 TEST_F(sfptostr, NegativeInteger) {
25 s_fp test = -200 << 16; // exact -200.000000
27 EXPECT_STREQ("-200.000000", fptoa(test, SFP_MAX_PRECISION));
28 EXPECT_STREQ("-200000.000", fptoms(test, SFP_MAX_PRECISION));
31 TEST_F(sfptostr, PositiveIntegerPositiveFraction) {
32 s_fp test = (300 << 16) + (1 << 15); // 300 + 0.5
34 EXPECT_STREQ("300.500000", fptoa(test, SFP_MAX_PRECISION));
35 EXPECT_STREQ("300500.000", fptoms(test, SFP_MAX_PRECISION));
38 TEST_F(sfptostr, NegativeIntegerNegativeFraction) {
39 s_fp test = (-200 << 16) - (1 << 15); // -200 - 0.5
41 EXPECT_STREQ("-200.500000", fptoa(test, SFP_MAX_PRECISION));
42 EXPECT_STREQ("-200500.000", fptoms(test, SFP_MAX_PRECISION));
45 TEST_F(sfptostr, PositiveIntegerNegativeFraction) {
46 s_fp test = (300 << 16) - (1 << 14); // 300 - 0.25
48 EXPECT_STREQ("299.750000", fptoa(test, SFP_MAX_PRECISION));
49 EXPECT_STREQ("299750.000", fptoms(test, SFP_MAX_PRECISION));
52 TEST_F(sfptostr, NegativeIntegerPositiveFraction) {
53 s_fp test = (-200 << 16) + (1 << 14)*3; // -200 + 0.75
55 EXPECT_STREQ("-199.250000", fptoa(test, SFP_MAX_PRECISION));
56 EXPECT_STREQ("-199250.000", fptoms(test, SFP_MAX_PRECISION));
59 TEST_F(sfptostr, SingleDecimalInteger) {
60 s_fp test = 300 << 16; // 300
62 EXPECT_STREQ("300.0", fptoa(test, 1));
63 EXPECT_STREQ("300000.0", fptoms(test, 1));
66 TEST_F(sfptostr, SingleDecimalRounding) {
67 s_fp test = (2 << 16) + (1 << 14)*3; // 2 + 0.25*3 = 2.75
69 EXPECT_STREQ("2.8", fptoa(test, 1));
70 EXPECT_STREQ("2750.0", fptoms(test, 1));