2 * This file contains test for both fptoa and fptoms (which uses dofptoa),
3 * since all these functions are very similar.
9 #define SFP_MAX_PRECISION 6
11 void test_PositiveInteger(void);
12 void test_NegativeInteger(void);
13 void test_PositiveIntegerPositiveFraction(void);
14 void test_NegativeIntegerNegativeFraction(void);
15 void test_PositiveIntegerNegativeFraction(void);
16 void test_NegativeIntegerPositiveFraction(void);
17 void test_SingleDecimalInteger(void);
18 void test_SingleDecimalRounding(void);
21 void test_PositiveInteger(void)
23 s_fp test = 300 << 16; // exact 300.000000
25 TEST_ASSERT_EQUAL_STRING("300.000000", fptoa(test, SFP_MAX_PRECISION));
26 TEST_ASSERT_EQUAL_STRING("300000.000", fptoms(test, SFP_MAX_PRECISION));
29 void test_NegativeInteger(void)
31 s_fp test = -200 << 16; // exact -200.000000
33 TEST_ASSERT_EQUAL_STRING("-200.000000", fptoa(test, SFP_MAX_PRECISION));
34 TEST_ASSERT_EQUAL_STRING("-200000.000", fptoms(test, SFP_MAX_PRECISION));
37 void test_PositiveIntegerPositiveFraction(void)
39 s_fp test = (300 << 16) + (1 << 15); // 300 + 0.5
41 TEST_ASSERT_EQUAL_STRING("300.500000", fptoa(test, SFP_MAX_PRECISION));
42 TEST_ASSERT_EQUAL_STRING("300500.000", fptoms(test, SFP_MAX_PRECISION));
45 void test_NegativeIntegerNegativeFraction(void)
47 s_fp test = (-200 << 16) - (1 << 15); // -200 - 0.5
49 TEST_ASSERT_EQUAL_STRING("-200.500000", fptoa(test, SFP_MAX_PRECISION));
50 TEST_ASSERT_EQUAL_STRING("-200500.000", fptoms(test, SFP_MAX_PRECISION));
53 void test_PositiveIntegerNegativeFraction(void)
55 s_fp test = (300 << 16) - (1 << 14); // 300 - 0.25
57 TEST_ASSERT_EQUAL_STRING("299.750000", fptoa(test, SFP_MAX_PRECISION));
58 TEST_ASSERT_EQUAL_STRING("299750.000", fptoms(test, SFP_MAX_PRECISION));
61 void test_NegativeIntegerPositiveFraction(void)
63 s_fp test = (-200 << 16) + (1 << 14)*3; // -200 + 0.75
65 TEST_ASSERT_EQUAL_STRING("-199.250000", fptoa(test, SFP_MAX_PRECISION));
66 TEST_ASSERT_EQUAL_STRING("-199250.000", fptoms(test, SFP_MAX_PRECISION));
69 void test_SingleDecimalInteger(void)
71 s_fp test = 300 << 16; // 300
73 TEST_ASSERT_EQUAL_STRING("300.0", fptoa(test, 1));
74 TEST_ASSERT_EQUAL_STRING("300000.0", fptoms(test, 1));
77 void test_SingleDecimalRounding(void)
79 s_fp test = (2 << 16) + (1 << 14)*3; // 2 + 0.25*3 = 2.75
81 TEST_ASSERT_EQUAL_STRING("2.8", fptoa(test, 1));
82 TEST_ASSERT_EQUAL_STRING("2750.0", fptoms(test, 1));