1 //===-- floatdidf.c - Test __floatdidf ------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file tests __floatdidf for the compiler_rt library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "int_lib.h" 15 #include <float.h> 16 #include <stdio.h> 17 18 // Returns: convert a to a double, rounding toward even. 19 20 // Assumption: double is a IEEE 64 bit floating point type 21 // di_int is a 64 bit integral type 22 23 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm 24 25 double __floatdidf(di_int a); 26 27 int test__floatdidf(di_int a, double expected) 28 { 29 double x = __floatdidf(a); 30 if (x != expected) 31 printf("error in __floatdidf(%llX) = %a, expected %a\n", a, x, expected); 32 return x != expected; 33 } 34 35 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; 36 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0}; 37 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0}; 38 39 int main() 40 { 41 if (test__floatdidf(0, 0.0)) 42 return 1; 43 44 if (test__floatdidf(1, 1.0)) 45 return 1; 46 if (test__floatdidf(2, 2.0)) 47 return 1; 48 if (test__floatdidf(20, 20.0)) 49 return 1; 50 if (test__floatdidf(-1, -1.0)) 51 return 1; 52 if (test__floatdidf(-2, -2.0)) 53 return 1; 54 if (test__floatdidf(-20, -20.0)) 55 return 1; 56 57 if (test__floatdidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62)) 58 return 1; 59 if (test__floatdidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62)) 60 return 1; 61 if (test__floatdidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62)) 62 return 1; 63 if (test__floatdidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62)) 64 return 1; 65 66 if (test__floatdidf(0x8000008000000000LL, -0x1.FFFFFEp+62)) 67 return 1; 68 if (test__floatdidf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62)) 69 return 1; 70 if (test__floatdidf(0x8000010000000000LL, -0x1.FFFFFCp+62)) 71 return 1; 72 if (test__floatdidf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62)) 73 return 1; 74 75 if (test__floatdidf(0x8000000000000000LL, -0x1.000000p+63)) 76 return 1; 77 if (test__floatdidf(0x8000000000000001LL, -0x1.000000p+63)) 78 return 1; 79 80 if (test__floatdidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50)) 81 return 1; 82 83 if (test__floatdidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50)) 84 return 1; 85 if (test__floatdidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50)) 86 return 1; 87 if (test__floatdidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50)) 88 return 1; 89 if (test__floatdidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50)) 90 return 1; 91 if (test__floatdidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50)) 92 return 1; 93 94 if (test__floatdidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50)) 95 return 1; 96 if (test__floatdidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50)) 97 return 1; 98 if (test__floatdidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50)) 99 return 1; 100 if (test__floatdidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50)) 101 return 1; 102 if (test__floatdidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50)) 103 return 1; 104 105 if (test__floatdidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57)) 106 return 1; 107 if (test__floatdidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57)) 108 return 1; 109 if (test__floatdidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57)) 110 return 1; 111 if (test__floatdidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57)) 112 return 1; 113 if (test__floatdidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57)) 114 return 1; 115 if (test__floatdidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57)) 116 return 1; 117 if (test__floatdidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57)) 118 return 1; 119 if (test__floatdidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57)) 120 return 1; 121 if (test__floatdidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57)) 122 return 1; 123 if (test__floatdidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57)) 124 return 1; 125 if (test__floatdidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57)) 126 return 1; 127 if (test__floatdidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57)) 128 return 1; 129 if (test__floatdidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57)) 130 return 1; 131 if (test__floatdidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57)) 132 return 1; 133 if (test__floatdidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57)) 134 return 1; 135 136 return 0; 137 } 138
