1 /* $NetBSD: refidsmear.c,v 1.1.1.3 2015/10/23 17:47:45 christos Exp $ */ 2 3 #include "config.h" 4 5 #include <ntp.h> 6 #include <ntp_fp.h> 7 #include <refidsmear.h> 8 9 //#include "ntp_stdlib.h" 10 //#include "ntp_calendar.h" 11 12 #include "unity.h" 13 14 #include <stdio.h> 15 16 /* 17 * we want to test a refid format of: 18 * 254.x.y.x 19 * 20 * where x.y.z are 24 bits containing 2 (signed) integer bits 21 * and 22 fractional bits. 22 * 23 * we want functions to convert to/from this format, with unit tests. 24 * 25 * Interesting test cases include: 26 * 254.0.0.0 27 * 254.0.0.1 28 * 254.127.255.255 29 * 254.128.0.0 30 * 254.255.255.255 31 */ 32 33 34 35 void rtol(uint32_t r, char *es); 36 void rtoltor(uint32_t er, char *es); 37 void ltor(l_fp l, char *er); 38 void test_refidsmear(void); 39 40 void 41 rtol(uint32_t r, char *es) 42 { 43 l_fp l; 44 char *as; 45 char msg[100]; 46 47 TEST_ASSERT_NOT_NULL(es); 48 49 snprintf(msg, 100, "rtol was called with r=%#.8x, es=%s", r, es); 50 51 l = convertRefIDToLFP(htonl(r)); 52 as = lfptoa(&l, 8); 53 54 //printf("refid %#x, smear %s\n", r, as); 55 56 TEST_ASSERT_NOT_NULL_MESSAGE(as, msg); 57 TEST_ASSERT_EQUAL_STRING_MESSAGE(es, as, msg); 58 59 return; 60 } 61 62 63 64 65 void 66 rtoltor(uint32_t er, char *es) 67 { 68 l_fp l; 69 char *as; 70 uint32_t ar; 71 char msg[100]; 72 73 TEST_ASSERT_NOT_NULL(es); 74 75 snprintf(msg, 100, "rtoltor was called with er=%#.8x, es=%s", er, es); 76 77 l = convertRefIDToLFP(htonl(er)); 78 as = lfptoa(&l, 8); 79 80 ar = convertLFPToRefID(l); 81 82 //printf("smear %s, refid %#.8x\n", lfptoa(&l, 8), ntohl(ar)); 83 84 TEST_ASSERT_NOT_NULL_MESSAGE(as, msg); 85 TEST_ASSERT_EQUAL_STRING_MESSAGE(es, as, msg); 86 TEST_ASSERT_EQUAL_UINT_MESSAGE(er, ntohl(ar), msg); 87 88 return; 89 } 90 91 92 void 93 ltor(l_fp l, char *er) 94 { 95 uint32_t r; 96 97 printf("ltor: "); 98 99 r = convertLFPToRefID(l); 100 printf("smear %s, refid %#.8x\n", lfptoa(&l, 8), ntohl(r)); 101 102 return; 103 } 104 105 106 void test_refidsmear(void) 107 { 108 109 rtol(0xfe800000, "-2.00000000"); 110 rtol(0xfe800001, "-1.99999976"); 111 rtol(0xfe8ffffe, "-1.75000048"); 112 rtol(0xfe8fffff, "-1.75000024"); 113 rtol(0xfef00000, "-0.25000000"); 114 rtol(0xfef00001, "-0.24999976"); 115 rtol(0xfefffffe, "-0.00000048"); 116 rtol(0xfeffffff, "-0.00000024"); 117 118 rtol(0xfe000000, "0.00000000"); 119 rtol(0xfe000001, "0.00000024"); 120 rtol(0xfe6ffffe, "1.74999952"); 121 rtol(0xfe6fffff, "1.74999976"); 122 rtol(0xfe700000, "1.75000000"); 123 rtol(0xfe700001, "1.75000024"); 124 rtol(0xfe7ffffe, "1.99999952"); 125 rtol(0xfe7fffff, "1.99999976"); 126 127 rtoltor(0xfe800000, "-2.00000000"); 128 rtoltor(0xfe800001, "-1.99999976"); 129 rtoltor(0xfe8ffffe, "-1.75000048"); 130 rtoltor(0xfe8fffff, "-1.75000024"); 131 rtoltor(0xfef00000, "-0.25000000"); 132 rtoltor(0xfef00001, "-0.24999976"); 133 rtoltor(0xfefffffe, "-0.00000048"); 134 rtoltor(0xfeffffff, "-0.00000024"); 135 136 rtoltor(0xfe000000, "0.00000000"); 137 rtoltor(0xfe000001, "0.00000024"); 138 rtoltor(0xfe6ffffe, "1.74999952"); 139 rtoltor(0xfe6fffff, "1.74999976"); 140 rtoltor(0xfe700000, "1.75000000"); 141 rtoltor(0xfe700001, "1.75000024"); 142 rtoltor(0xfe7ffffe, "1.99999952"); 143 rtoltor(0xfe7fffff, "1.99999976"); 144 145 return; 146 } 147