115 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_fixdfti3// REQUIRES: int1284 5#include "int_lib.h"6#include <stdio.h>7 8#ifdef CRT_HAS_128BIT9 10// Returns: convert a to a signed long long, rounding toward zero.11 12// Assumption: double is a IEEE 64 bit floating point type 13// su_int is a 32 bit integral type14// value in double is representable in ti_int (no range checking performed)15 16// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm17 18COMPILER_RT_ABI ti_int __fixdfti(double a);19 20int test__fixdfti(double a, ti_int expected)21{22 ti_int x = __fixdfti(a);23 if (x != expected)24 {25 twords xt;26 xt.all = x;27 twords expectedt;28 expectedt.all = expected;29 printf("error in __fixdfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",30 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);31 }32 return x != expected;33}34 35char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};36char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};37char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};38 39#endif40 41int main()42{43#ifdef CRT_HAS_128BIT44 if (test__fixdfti(0.0, 0))45 return 1;46 47 if (test__fixdfti(0.5, 0))48 return 1;49 if (test__fixdfti(0.99, 0))50 return 1;51 if (test__fixdfti(1.0, 1))52 return 1;53 if (test__fixdfti(1.5, 1))54 return 1;55 if (test__fixdfti(1.99, 1))56 return 1;57 if (test__fixdfti(2.0, 2))58 return 1;59 if (test__fixdfti(2.01, 2))60 return 1;61 if (test__fixdfti(-0.5, 0))62 return 1;63 if (test__fixdfti(-0.99, 0))64 return 1;65 if (test__fixdfti(-1.0, -1))66 return 1;67 if (test__fixdfti(-1.5, -1))68 return 1;69 if (test__fixdfti(-1.99, -1))70 return 1;71 if (test__fixdfti(-2.0, -2))72 return 1;73 if (test__fixdfti(-2.01, -2))74 return 1;75 76 if (test__fixdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))77 return 1;78 if (test__fixdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))79 return 1;80 81 if (test__fixdfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,82 0x8000008000000000LL)))83 return 1;84 if (test__fixdfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,85 0x8000010000000000LL)))86 return 1;87 88 if (test__fixdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))89 return 1;90 if (test__fixdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))91 return 1;92 93 if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,94 0x8000000000000400LL)))95 return 1;96 if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,97 0x8000000000000800LL)))98 return 1;99 100 if (test__fixdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0)))101 return 1;102 if (test__fixdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0)))103 return 1;104 105 if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+126, make_ti(0x8000000000000400LL, 0)))106 return 1;107 if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+126, make_ti(0x8000000000000800LL, 0)))108 return 1;109 110#else111 printf("skipped\n");112#endif113 return 0;114}115