1 // RUN: %clang_builtins %s %librt -o %t && %run %t 2 // REQUIRES: librt_has_floatuntixf 3 // REQUIRES: x86-target-arch 4 5 //===-- floatuntixf.c - Test __floatuntixf --------------------------------===// 6 // 7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 8 // See https://llvm.org/LICENSE.txt for license information. 9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 10 // 11 //===----------------------------------------------------------------------===// 12 // 13 // This file tests __floatuntixf for the compiler_rt library. 14 // 15 //===----------------------------------------------------------------------===// 16 17 #include "int_lib.h" 18 #include <float.h> 19 #include <stdio.h> 20 21 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE 22 23 // Returns: convert a to a long double, rounding toward even. 24 25 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits 26 // tu_int is a 128 bit integral type 27 28 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee | 29 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 30 31 COMPILER_RT_ABI long double __floatuntixf(tu_int a); 32 33 int test__floatuntixf(tu_int a, long double expected) 34 { 35 long double x = __floatuntixf(a); 36 if (x != expected) 37 { 38 utwords at; 39 at.all = a; 40 printf("error in __floatuntixf(0x%.16llX%.16llX) = %LA, expected %LA\n", 41 at.s.high, at.s.low, x, expected); 42 } 43 return x != expected; 44 } 45 46 COMPILE_TIME_ASSERT(sizeof(tu_int) == 2*sizeof(du_int)); 47 COMPILE_TIME_ASSERT(sizeof(tu_int)*CHAR_BIT == 128); 48 COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128); 49 50 #endif 51 52 int main() 53 { 54 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE 55 if (test__floatuntixf(0, 0.0)) 56 return 1; 57 58 if (test__floatuntixf(1, 1.0)) 59 return 1; 60 if (test__floatuntixf(2, 2.0)) 61 return 1; 62 if (test__floatuntixf(20, 20.0)) 63 return 1; 64 65 if (test__floatuntixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62)) 66 return 1; 67 if (test__floatuntixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62)) 68 return 1; 69 if (test__floatuntixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62)) 70 return 1; 71 if (test__floatuntixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62)) 72 return 1; 73 if (test__floatuntixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L)) 74 return 1; 75 if (test__floatuntixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L)) 76 return 1; 77 if (test__floatuntixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L)) 78 return 1; 79 80 if (test__floatuntixf(0x8000008000000000ULL, 0x8.000008p+60)) 81 return 1; 82 if (test__floatuntixf(0x8000000000000800ULL, 0x8.0000000000008p+60)) 83 return 1; 84 if (test__floatuntixf(0x8000010000000000ULL, 0x8.00001p+60)) 85 return 1; 86 if (test__floatuntixf(0x8000000000001000ULL, 0x8.000000000001p+60)) 87 return 1; 88 89 if (test__floatuntixf(0x8000000000000000ULL, 0x8p+60)) 90 return 1; 91 if (test__floatuntixf(0x8000000000000001ULL, 0x8.000000000000001p+60L)) 92 return 1; 93 94 if (test__floatuntixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50)) 95 return 1; 96 97 if (test__floatuntixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50)) 98 return 1; 99 if (test__floatuntixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50)) 100 return 1; 101 if (test__floatuntixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50)) 102 return 1; 103 if (test__floatuntixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50)) 104 return 1; 105 if (test__floatuntixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50)) 106 return 1; 107 108 if (test__floatuntixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50)) 109 return 1; 110 if (test__floatuntixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50)) 111 return 1; 112 if (test__floatuntixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50)) 113 return 1; 114 if (test__floatuntixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50)) 115 return 1; 116 if (test__floatuntixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50)) 117 return 1; 118 119 if (test__floatuntixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57)) 120 return 1; 121 if (test__floatuntixf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496D08p+57L)) 122 return 1; 123 if (test__floatuntixf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496D8p+57L)) 124 return 1; 125 if (test__floatuntixf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496DCp+57L)) 126 return 1; 127 if (test__floatuntixf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496DBp+57L)) 128 return 1; 129 if (test__floatuntixf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496DF8p+57L)) 130 return 1; 131 if (test__floatuntixf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496E08p+57L)) 132 return 1; 133 if (test__floatuntixf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496E38p+57L)) 134 return 1; 135 if (test__floatuntixf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496E4p+57L)) 136 return 1; 137 if (test__floatuntixf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496E78p+57L)) 138 return 1; 139 if (test__floatuntixf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496E8p+57L)) 140 return 1; 141 if (test__floatuntixf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496E88p+57L)) 142 return 1; 143 if (test__floatuntixf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496ECp+57L)) 144 return 1; 145 if (test__floatuntixf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496EF8p+57L)) 146 return 1; 147 if (test__floatuntixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57)) 148 return 1; 149 150 if (test__floatuntixf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121L)) 151 return 1; 152 if (test__floatuntixf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496D08p+121L)) 153 return 1; 154 if (test__floatuntixf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496D8p+121L)) 155 return 1; 156 if (test__floatuntixf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496DCp+121L)) 157 return 1; 158 if (test__floatuntixf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496DBp+121L)) 159 return 1; 160 if (test__floatuntixf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496DF8p+121L)) 161 return 1; 162 if (test__floatuntixf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496E08p+121L)) 163 return 1; 164 if (test__floatuntixf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496E38p+121L)) 165 return 1; 166 if (test__floatuntixf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496E4p+121L)) 167 return 1; 168 if (test__floatuntixf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496E78p+121L)) 169 return 1; 170 if (test__floatuntixf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496E8p+121L)) 171 return 1; 172 if (test__floatuntixf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496E88p+121L)) 173 return 1; 174 if (test__floatuntixf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496ECp+121L)) 175 return 1; 176 if (test__floatuntixf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496EF8p+121L)) 177 return 1; 178 if (test__floatuntixf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121L)) 179 return 1; 180 181 if (test__floatuntixf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL), 0x1.FFFFFFFFFFFFFFFEp+63L)) 182 return 1; 183 184 if (test__floatuntixf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x0000000000000000LL), 185 0x1.FFFFFFFFFFFFFFFEp+127L)) 186 return 1; 187 if (test__floatuntixf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL), 188 0x1.0000000000000000p+128L)) 189 return 1; 190 191 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456100000000001LL), 192 0x1.2345678901234562p+108L)) 193 return 1; 194 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456200000000000LL), 195 0x1.2345678901234562p+108L)) 196 return 1; 197 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x34562FFFFFFFFFFFLL), 198 0x1.2345678901234562p+108L)) 199 return 1; 200 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456300000000000LL), 201 0x1.2345678901234564p+108L)) 202 return 1; 203 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456400000000000LL), 204 0x1.2345678901234564p+108L)) 205 return 1; 206 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x34564FFFFFFFFFFFLL), 207 0x1.2345678901234564p+108L)) 208 return 1; 209 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456500000000000LL), 210 0x1.2345678901234564p+108L)) 211 return 1; 212 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456500000000001LL), 213 0x1.2345678901234566p+108L)) 214 return 1; 215 if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x34566FFFFFFFFFFFLL), 216 0x1.2345678901234566p+108L)) 217 return 1; 218 #else 219 printf("skipped\n"); 220 #endif 221 return 0; 222 } 223