1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 //===-- floatunditf_test.c - Test __floatunditf ---------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 // This file tests __floatunditf for the compiler_rt library.
13 //===----------------------------------------------------------------------===//
20 #if __LDBL_MANT_DIG__ == 113
24 // Returns: long integer converted to long double
26 COMPILER_RT_ABI long double __floatunditf(unsigned long long a);
28 int test__floatunditf(unsigned long long a, uint64_t expectedHi, uint64_t expectedLo)
30 long double x = __floatunditf(a);
31 int ret = compareResultLD(x, expectedHi, expectedLo);
34 printf("error in __floatunditf(%Lu) = %.20Lf, "
35 "expected %.20Lf\n", a, x, fromRep128(expectedHi, expectedLo));
39 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
45 #if __LDBL_MANT_DIG__ == 113
46 if (test__floatunditf(0xffffffffffffffffULL, UINT64_C(0x403effffffffffff), UINT64_C(0xfffe000000000000)))
48 if (test__floatunditf(0xfffffffffffffffeULL, UINT64_C(0x403effffffffffff), UINT64_C(0xfffc000000000000)))
50 if (test__floatunditf(0x8000000000000000ULL, UINT64_C(0x403e000000000000), UINT64_C(0x0)))
52 if (test__floatunditf(0x7fffffffffffffffULL, UINT64_C(0x403dffffffffffff), UINT64_C(0xfffc000000000000)))
54 if (test__floatunditf(0x123456789abcdef1ULL, UINT64_C(0x403b23456789abcd), UINT64_C(0xef10000000000000)))
56 if (test__floatunditf(0x2ULL, UINT64_C(0x4000000000000000), UINT64_C(0x0)))
58 if (test__floatunditf(0x1ULL, UINT64_C(0x3fff000000000000), UINT64_C(0x0)))
60 if (test__floatunditf(0x0ULL, UINT64_C(0x0), UINT64_C(0x0)))