68 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_trunctfdf23 4#include "int_lib.h"5#include <stdio.h>6 7#if __LDBL_MANT_DIG__ == 1138 9#include "fp_test.h"10 11COMPILER_RT_ABI double __trunctfdf2(long double a);12 13int test__trunctfdf2(long double a, uint64_t expected)14{15 double x = __trunctfdf2(a);16 int ret = compareResultD(x, expected);17 18 if (ret)19 {20 printf("error in test__trunctfdf2(%.20Lf) = %lf, "21 "expected %lf\n", a, x, fromRep64(expected));22 }23 return ret;24}25 26char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};27 28#endif29 30int main()31{32#if __LDBL_MANT_DIG__ == 11333 // qNaN34 if (test__trunctfdf2(makeQNaN128(),35 UINT64_C(0x7ff8000000000000)))36 return 1;37 // NaN38 if (test__trunctfdf2(makeNaN128(UINT64_C(0x810000000000)),39 UINT64_C(0x7ff8100000000000)))40 return 1;41 // inf42 if (test__trunctfdf2(makeInf128(),43 UINT64_C(0x7ff0000000000000)))44 return 1;45 // zero46 if (test__trunctfdf2(0.0L, UINT64_C(0x0)))47 return 1;48 49 if (test__trunctfdf2(0x1.af23456789bbaaab347645365cdep+5L,50 UINT64_C(0x404af23456789bbb)))51 return 1;52 if (test__trunctfdf2(0x1.dedafcff354b6ae9758763545432p-9L,53 UINT64_C(0x3f6dedafcff354b7)))54 return 1;55 if (test__trunctfdf2(0x1.2f34dd5f437e849b4baab754cdefp+4534L,56 UINT64_C(0x7ff0000000000000)))57 return 1;58 if (test__trunctfdf2(0x1.edcbff8ad76ab5bf46463233214fp-435L,59 UINT64_C(0x24cedcbff8ad76ab)))60 return 1;61 62#else63 printf("skipped\n");64 65#endif66 return 0;67}68