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