123 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_fixunsdfti3// REQUIRES: int1284 5#include "int_lib.h"6#include <stdio.h>7 8// Returns: convert a to a unsigned long long, rounding toward zero.9// Negative values all become zero.10 11// Assumption: double is a IEEE 64 bit floating point type 12// tu_int is a 64 bit integral type13// value in double is representable in tu_int or is negative 14// (no range checking performed)15 16// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm17 18#ifdef CRT_HAS_128BIT19 20COMPILER_RT_ABI tu_int __fixunsdfti(double a);21 22int test__fixunsdfti(double a, tu_int expected)23{24 tu_int x = __fixunsdfti(a);25 if (x != expected)26 {27 utwords xt;28 xt.all = x;29 utwords expectedt;30 expectedt.all = expected;31 printf("error in __fixunsdfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",32 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);33 }34 return x != expected;35}36 37char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};38char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};39char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};40 41#endif42 43int main()44{45#ifdef CRT_HAS_128BIT46 if (test__fixunsdfti(0.0, 0))47 return 1;48 49 if (test__fixunsdfti(0.5, 0))50 return 1;51 if (test__fixunsdfti(0.99, 0))52 return 1;53 if (test__fixunsdfti(1.0, 1))54 return 1;55 if (test__fixunsdfti(1.5, 1))56 return 1;57 if (test__fixunsdfti(1.99, 1))58 return 1;59 if (test__fixunsdfti(2.0, 2))60 return 1;61 if (test__fixunsdfti(2.01, 2))62 return 1;63 if (test__fixunsdfti(-0.5, 0))64 return 1;65 if (test__fixunsdfti(-0.99, 0))66 return 1;67#if !TARGET_LIBGCC68 if (test__fixunsdfti(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec69 return 1;70 if (test__fixunsdfti(-1.5, 0))71 return 1;72 if (test__fixunsdfti(-1.99, 0))73 return 1;74 if (test__fixunsdfti(-2.0, 0))75 return 1;76 if (test__fixunsdfti(-2.01, 0))77 return 1;78#endif79 80 if (test__fixunsdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))81 return 1;82 if (test__fixunsdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))83 return 1;84 85#if !TARGET_LIBGCC86 if (test__fixunsdfti(-0x1.FFFFFEp+62, 0))87 return 1;88 if (test__fixunsdfti(-0x1.FFFFFCp+62, 0))89 return 1;90#endif91 92 if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800ULL))93 return 1;94 if (test__fixunsdfti(0x1.0000000000000p+63, 0x8000000000000000ULL))95 return 1;96 if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00ULL))97 return 1;98 if (test__fixunsdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800ULL))99 return 1;100 101 if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+127, make_ti(0xFFFFFFFFFFFFF800ULL, 0)))102 return 1;103 if (test__fixunsdfti(0x1.0000000000000p+127, make_ti(0x8000000000000000ULL, 0)))104 return 1;105 if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00ULL, 0)))106 return 1;107 if (test__fixunsdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800ULL, 0)))108 return 1;109 if (test__fixunsdfti(0x1.0000000000000p+128, make_ti(0xFFFFFFFFFFFFFFFFULL,110 0xFFFFFFFFFFFFFFFFULL)))111 return 1;112 113#if !TARGET_LIBGCC114 if (test__fixunsdfti(-0x1.FFFFFFFFFFFFFp+62, 0))115 return 1;116 if (test__fixunsdfti(-0x1.FFFFFFFFFFFFEp+62, 0))117 return 1;118#endif119 120#endif121 return 0;122}123