1// RUN: %clang_builtins %s %librt -o %t && %run %t 2// REQUIRES: int128 3//===-- floatuntidf.c - Test __floatuntidf --------------------------------===// 4// 5// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 6// See https://llvm.org/LICENSE.txt for license information. 7// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 8// 9//===----------------------------------------------------------------------===// 10// 11// This file tests __floatuntidf for the compiler_rt library. 12// 13//===----------------------------------------------------------------------===// 14 15#include "int_lib.h" 16#include <float.h> 17#include <stdio.h> 18 19#ifdef CRT_HAS_128BIT 20 21// Returns: convert a to a double, rounding toward even. 22 23// Assumption: double is a IEEE 64 bit floating point type 24// tu_int is a 64 bit integral type 25 26// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 27 28COMPILER_RT_ABI double __floatuntidf(tu_int a); 29 30int test__floatuntidf(tu_int a, double expected) 31{ 32 double x = __floatuntidf(a); 33 if (x != expected) 34 { 35 utwords at; 36 at.all = a; 37 printf("error in __floatuntidf(0x%.16llX%.16llX) = %a, expected %a\n", 38 at.s.high, at.s.low, x, expected); 39 } 40 return x != expected; 41} 42 43char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; 44char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0}; 45char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; 46 47#endif 48 49int main() 50{ 51#ifdef CRT_HAS_128BIT 52 if (test__floatuntidf(0, 0.0)) 53 return 1; 54 55 if (test__floatuntidf(1, 1.0)) 56 return 1; 57 if (test__floatuntidf(2, 2.0)) 58 return 1; 59 if (test__floatuntidf(20, 20.0)) 60 return 1; 61 62 if (test__floatuntidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62)) 63 return 1; 64 if (test__floatuntidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62)) 65 return 1; 66 if (test__floatuntidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62)) 67 return 1; 68 if (test__floatuntidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62)) 69 return 1; 70 71 if (test__floatuntidf(make_ti(0x8000008000000000LL, 0), 0x1.000001p+127)) 72 return 1; 73 if (test__floatuntidf(make_ti(0x8000000000000800LL, 0), 0x1.0000000000001p+127)) 74 return 1; 75 if (test__floatuntidf(make_ti(0x8000010000000000LL, 0), 0x1.000002p+127)) 76 return 1; 77 if (test__floatuntidf(make_ti(0x8000000000001000LL, 0), 0x1.0000000000002p+127)) 78 return 1; 79 80 if (test__floatuntidf(make_ti(0x8000000000000000LL, 0), 0x1.000000p+127)) 81 return 1; 82 if (test__floatuntidf(make_ti(0x8000000000000001LL, 0), 0x1.0000000000000002p+127)) 83 return 1; 84 85 if (test__floatuntidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50)) 86 return 1; 87 88 if (test__floatuntidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50)) 89 return 1; 90 if (test__floatuntidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50)) 91 return 1; 92 if (test__floatuntidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50)) 93 return 1; 94 if (test__floatuntidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50)) 95 return 1; 96 if (test__floatuntidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50)) 97 return 1; 98 99 if (test__floatuntidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50)) 100 return 1; 101 if (test__floatuntidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50)) 102 return 1; 103 if (test__floatuntidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50)) 104 return 1; 105 if (test__floatuntidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50)) 106 return 1; 107 if (test__floatuntidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50)) 108 return 1; 109 110 if (test__floatuntidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57)) 111 return 1; 112 if (test__floatuntidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57)) 113 return 1; 114 if (test__floatuntidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57)) 115 return 1; 116 if (test__floatuntidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57)) 117 return 1; 118 if (test__floatuntidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57)) 119 return 1; 120 if (test__floatuntidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57)) 121 return 1; 122 if (test__floatuntidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57)) 123 return 1; 124 if (test__floatuntidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57)) 125 return 1; 126 if (test__floatuntidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57)) 127 return 1; 128 if (test__floatuntidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57)) 129 return 1; 130 if (test__floatuntidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57)) 131 return 1; 132 if (test__floatuntidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57)) 133 return 1; 134 if (test__floatuntidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57)) 135 return 1; 136 if (test__floatuntidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57)) 137 return 1; 138 if (test__floatuntidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57)) 139 return 1; 140 141 if (test__floatuntidf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121)) 142 return 1; 143 if (test__floatuntidf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496Dp+121)) 144 return 1; 145 if (test__floatuntidf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496Ep+121)) 146 return 1; 147 if (test__floatuntidf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496Ep+121)) 148 return 1; 149 if (test__floatuntidf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496Ep+121)) 150 return 1; 151 if (test__floatuntidf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496Ep+121)) 152 return 1; 153 if (test__floatuntidf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496Ep+121)) 154 return 1; 155 if (test__floatuntidf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496Ep+121)) 156 return 1; 157 if (test__floatuntidf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496Ep+121)) 158 return 1; 159 if (test__floatuntidf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496Ep+121)) 160 return 1; 161 if (test__floatuntidf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496Ep+121)) 162 return 1; 163 if (test__floatuntidf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496Fp+121)) 164 return 1; 165 if (test__floatuntidf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496Fp+121)) 166 return 1; 167 if (test__floatuntidf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496Fp+121)) 168 return 1; 169 if (test__floatuntidf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121)) 170 return 1; 171#else 172 printf("skipped\n"); 173#endif 174 return 0; 175} 176