135 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_floatdixf3 4#include "int_lib.h"5#include <stdio.h>6 7#if HAS_80_BIT_LONG_DOUBLE8// Returns: convert a to a long double, rounding toward even.9 10// Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits11// di_int is a 64 bit integral type12 13// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |14// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm15 16long COMPILER_RT_ABI double __floatdixf(di_int a);17 18int test__floatdixf(di_int a, long double expected)19{20 long double x = __floatdixf(a);21 if (x != expected)22 printf("error in __floatdixf(%llX) = %LA, expected %LA\n",23 a, x, expected);24 return x != expected;25}26 27char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};28char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};29char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};30#endif31 32int main()33{34#if HAS_80_BIT_LONG_DOUBLE35 if (test__floatdixf(0, 0.0))36 return 1;37 38 if (test__floatdixf(1, 1.0))39 return 1;40 if (test__floatdixf(2, 2.0))41 return 1;42 if (test__floatdixf(20, 20.0))43 return 1;44 if (test__floatdixf(-1, -1.0))45 return 1;46 if (test__floatdixf(-2, -2.0))47 return 1;48 if (test__floatdixf(-20, -20.0))49 return 1;50 51 if (test__floatdixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))52 return 1;53 if (test__floatdixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))54 return 1;55 if (test__floatdixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))56 return 1;57 if (test__floatdixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))58 return 1;59 60 if (test__floatdixf(0x8000008000000000LL, -0x1.FFFFFEp+62))61 return 1;62 if (test__floatdixf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))63 return 1;64 if (test__floatdixf(0x8000010000000000LL, -0x1.FFFFFCp+62))65 return 1;66 if (test__floatdixf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))67 return 1;68 69 if (test__floatdixf(0x8000000000000000LL, -0x1.000000p+63))70 return 1;71 if (test__floatdixf(0x8000000000000001LL, -0x1.FFFFFFFFFFFFFFFCp+62L))72 return 1;73 74 if (test__floatdixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))75 return 1;76 77 if (test__floatdixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))78 return 1;79 if (test__floatdixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))80 return 1;81 if (test__floatdixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))82 return 1;83 if (test__floatdixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))84 return 1;85 if (test__floatdixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))86 return 1;87 88 if (test__floatdixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))89 return 1;90 if (test__floatdixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))91 return 1;92 if (test__floatdixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))93 return 1;94 if (test__floatdixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))95 return 1;96 if (test__floatdixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))97 return 1;98 99 if (test__floatdixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))100 return 1;101 if (test__floatdixf(0x023479FD0E092DA1LL, 0x8.D1E7F43824B684p+54L))102 return 1;103 if (test__floatdixf(0x023479FD0E092DB0LL, 0x8.D1E7f43824B6Cp+54L))104 return 1;105 if (test__floatdixf(0x023479FD0E092DB8LL, 0x8.D1E7F43824B6Ep+54L))106 return 1;107 if (test__floatdixf(0x023479FD0E092DB6LL, 0x8.D1E7F43824B6D8p+54L))108 return 1;109 if (test__floatdixf(0x023479FD0E092DBFLL, 0x8.D1E7F43824B6FCp+54L))110 return 1;111 if (test__floatdixf(0x023479FD0E092DC1LL, 0x8.D1E7F43824B704p+54L))112 return 1;113 if (test__floatdixf(0x023479FD0E092DC7LL, 0x8.D1E7F43824B71Cp+54L))114 return 1;115 if (test__floatdixf(0x023479FD0E092DC8LL, 0x8.D1E7F43824B72p+54L))116 return 1;117 if (test__floatdixf(0x023479FD0E092DCFLL, 0x8.D1E7F43824B73Cp+54L))118 return 1;119 if (test__floatdixf(0x023479FD0E092DD0LL, 0x8.D1E7F43824B74p+54L))120 return 1;121 if (test__floatdixf(0x023479FD0E092DD1LL, 0x8.D1E7F43824B744p+54L))122 return 1;123 if (test__floatdixf(0x023479FD0E092DD8LL, 0x8.D1E7F43824B76p+54L))124 return 1;125 if (test__floatdixf(0x023479FD0E092DDFLL, 0x8.D1E7F43824B77Cp+54L))126 return 1;127 if (test__floatdixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))128 return 1;129 130#else131 printf("skipped\n");132#endif133 return 0;134}135