1/* $NetBSD: sfptostr.c,v 1.2 2020/05/25 20:47:36 christos Exp $ */ 2 3/* 4 * This file contains test for both fptoa and fptoms (which uses dofptoa), 5 * since all these functions are very similar. 6 */ 7#include "config.h" 8#include "ntp_fp.h" 9#include "ntp_stdlib.h" 10#include "unity.h" 11 12#define SFP_MAX_PRECISION 6 13 14void setUp(void); 15void test_PositiveInteger(void); 16void test_NegativeInteger(void); 17void test_PositiveIntegerPositiveFraction(void); 18void test_NegativeIntegerNegativeFraction(void); 19void test_PositiveIntegerNegativeFraction(void); 20void test_NegativeIntegerPositiveFraction(void); 21void test_SingleDecimalInteger(void); 22void test_SingleDecimalRounding(void); 23 24 25void 26setUp(void) 27{ 28 init_lib(); 29 30 return; 31} 32 33 34void test_PositiveInteger(void) 35{ 36 s_fp test = 300 << 16; // exact 300.000000 37 38 TEST_ASSERT_EQUAL_STRING("300.000000", fptoa(test, SFP_MAX_PRECISION)); 39 TEST_ASSERT_EQUAL_STRING("300000.000", fptoms(test, SFP_MAX_PRECISION)); 40} 41 42void test_NegativeInteger(void) 43{ 44 s_fp test = -(200 << 16); // exact -200.000000 45 46 TEST_ASSERT_EQUAL_STRING("-200.000000", fptoa(test, SFP_MAX_PRECISION)); 47 TEST_ASSERT_EQUAL_STRING("-200000.000", fptoms(test, SFP_MAX_PRECISION)); 48} 49 50void test_PositiveIntegerPositiveFraction(void) 51{ 52 s_fp test = (300 << 16) + (1 << 15); // 300 + 0.5 53 54 TEST_ASSERT_EQUAL_STRING("300.500000", fptoa(test, SFP_MAX_PRECISION)); 55 TEST_ASSERT_EQUAL_STRING("300500.000", fptoms(test, SFP_MAX_PRECISION)); 56} 57 58void test_NegativeIntegerNegativeFraction(void) 59{ 60 s_fp test = -(200 << 16) - (1 << 15); // -200 - 0.5 61 62 TEST_ASSERT_EQUAL_STRING("-200.500000", fptoa(test, SFP_MAX_PRECISION)); 63 TEST_ASSERT_EQUAL_STRING("-200500.000", fptoms(test, SFP_MAX_PRECISION)); 64} 65 66void test_PositiveIntegerNegativeFraction(void) 67{ 68 s_fp test = (300 << 16) - (1 << 14); // 300 - 0.25 69 70 TEST_ASSERT_EQUAL_STRING("299.750000", fptoa(test, SFP_MAX_PRECISION)); 71 TEST_ASSERT_EQUAL_STRING("299750.000", fptoms(test, SFP_MAX_PRECISION)); 72} 73 74void test_NegativeIntegerPositiveFraction(void) 75{ 76 s_fp test = -(200 << 16) + (1 << 14)*3; // -200 + 0.75 77 78 TEST_ASSERT_EQUAL_STRING("-199.250000", fptoa(test, SFP_MAX_PRECISION)); 79 TEST_ASSERT_EQUAL_STRING("-199250.000", fptoms(test, SFP_MAX_PRECISION)); 80} 81 82void test_SingleDecimalInteger(void) 83{ 84 s_fp test = 300 << 16; // 300 85 86 TEST_ASSERT_EQUAL_STRING("300.0", fptoa(test, 1)); 87 TEST_ASSERT_EQUAL_STRING("300000.0", fptoms(test, 1)); 88} 89 90void test_SingleDecimalRounding(void) 91{ 92 s_fp test = (2 << 16) + (1 << 14)*3; // 2 + 0.25*3 = 2.75 93 94 TEST_ASSERT_EQUAL_STRING("2.8", fptoa(test, 1)); 95 TEST_ASSERT_EQUAL_STRING("2750.0", fptoms(test, 1)); 96} 97