123 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_floatundidf3 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// du_int is a 64 bit integral type12 13// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm14 15COMPILER_RT_ABI double __floatundidf(du_int a);16 17int test__floatundidf(di_int a, double expected)18{19 double x = __floatundidf(a);20 if (x != expected)21 printf("error in __floatundidf(%llX) = %a, expected %a\n",22 a, x, expected);23 return x != expected;24}25 26char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};27char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};28char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};29 30int main()31{32 if (test__floatundidf(0, 0.0))33 return 1;34 35 if (test__floatundidf(1, 1.0))36 return 1;37 if (test__floatundidf(2, 2.0))38 return 1;39 if (test__floatundidf(20, 20.0))40 return 1;41 42 if (test__floatundidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))43 return 1;44 if (test__floatundidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))45 return 1;46 if (test__floatundidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))47 return 1;48 if (test__floatundidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))49 return 1;50 51 if (test__floatundidf(0x8000008000000000LL, 0x1.000001p+63))52 return 1;53 if (test__floatundidf(0x8000000000000800LL, 0x1.0000000000001p+63))54 return 1;55 if (test__floatundidf(0x8000010000000000LL, 0x1.000002p+63))56 return 1;57 if (test__floatundidf(0x8000000000001000LL, 0x1.0000000000002p+63))58 return 1;59 60 if (test__floatundidf(0x8000000000000000LL, 0x1p+63))61 return 1;62 if (test__floatundidf(0x8000000000000001LL, 0x1p+63))63 return 1;64 65 if (test__floatundidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))66 return 1;67 68 if (test__floatundidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))69 return 1;70 if (test__floatundidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))71 return 1;72 if (test__floatundidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))73 return 1;74 if (test__floatundidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))75 return 1;76 if (test__floatundidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))77 return 1;78 79 if (test__floatundidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))80 return 1;81 if (test__floatundidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))82 return 1;83 if (test__floatundidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))84 return 1;85 if (test__floatundidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))86 return 1;87 if (test__floatundidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))88 return 1;89 90 if (test__floatundidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))91 return 1;92 if (test__floatundidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))93 return 1;94 if (test__floatundidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))95 return 1;96 if (test__floatundidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))97 return 1;98 if (test__floatundidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))99 return 1;100 if (test__floatundidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))101 return 1;102 if (test__floatundidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))103 return 1;104 if (test__floatundidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))105 return 1;106 if (test__floatundidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))107 return 1;108 if (test__floatundidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))109 return 1;110 if (test__floatundidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))111 return 1;112 if (test__floatundidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))113 return 1;114 if (test__floatundidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))115 return 1;116 if (test__floatundidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))117 return 1;118 if (test__floatundidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))119 return 1;120 121 return 0;122}123