65 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_floatunditf3 4#include "int_lib.h"5#include <complex.h>6#include <math.h>7#include <stdio.h>8 9// The testcase currently assumes IEEE TF format, once that has been10// fixed the defined(CRT_HAS_IEEE_TF) guard can be removed to enable it for11// IBM 128 floats as well.12#if defined(CRT_HAS_IEEE_TF)13 14# include "fp_test.h"15 16// Returns: long integer converted to long double17 18COMPILER_RT_ABI tf_float __floatunditf(du_int a);19 20int test__floatunditf(du_int a, uint64_t expectedHi, uint64_t expectedLo) {21 tf_float x = __floatunditf(a);22 int ret = compareResultF128(x, expectedHi, expectedLo);23 24 if (ret)25 printf("error in __floatunditf(%Lu) = %.20Lf, "26 "expected %.20Lf\n",27 a, x, fromRep128(expectedHi, expectedLo));28 return ret;29}30 31char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};32 33#endif34 35int main() {36#if defined(CRT_HAS_IEEE_TF)37 if (test__floatunditf(0xffffffffffffffffULL, UINT64_C(0x403effffffffffff),38 UINT64_C(0xfffe000000000000)))39 return 1;40 if (test__floatunditf(0xfffffffffffffffeULL, UINT64_C(0x403effffffffffff),41 UINT64_C(0xfffc000000000000)))42 return 1;43 if (test__floatunditf(0x8000000000000000ULL, UINT64_C(0x403e000000000000),44 UINT64_C(0x0)))45 return 1;46 if (test__floatunditf(0x7fffffffffffffffULL, UINT64_C(0x403dffffffffffff),47 UINT64_C(0xfffc000000000000)))48 return 1;49 if (test__floatunditf(0x123456789abcdef1ULL, UINT64_C(0x403b23456789abcd),50 UINT64_C(0xef10000000000000)))51 return 1;52 if (test__floatunditf(0x2ULL, UINT64_C(0x4000000000000000), UINT64_C(0x0)))53 return 1;54 if (test__floatunditf(0x1ULL, UINT64_C(0x3fff000000000000), UINT64_C(0x0)))55 return 1;56 if (test__floatunditf(0x0ULL, UINT64_C(0x0), UINT64_C(0x0)))57 return 1;58 59#else60 printf("skipped\n");61 62#endif63 return 0;64}65