1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_floatunditf
3 
4 #include "int_lib.h"
5 #include <math.h>
6 #include <complex.h>
7 #include <stdio.h>
8 
9 #if __LDBL_MANT_DIG__ == 113
10 
11 #include "fp_test.h"
12 
13 // Returns: long integer converted to long double
14 
15 COMPILER_RT_ABI long double __floatunditf(du_int a);
16 
17 int test__floatunditf(du_int a, uint64_t expectedHi, uint64_t expectedLo)
18 {
19     long double x = __floatunditf(a);
20     int ret = compareResultLD(x, expectedHi, expectedLo);
21 
22     if (ret)
23         printf("error in __floatunditf(%Lu) = %.20Lf, "
24                "expected %.20Lf\n", a, x, fromRep128(expectedHi, expectedLo));
25     return ret;
26 }
27 
28 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
29 
30 #endif
31 
32 int main()
33 {
34 #if __LDBL_MANT_DIG__ == 113
35     if (test__floatunditf(0xffffffffffffffffULL, UINT64_C(0x403effffffffffff), UINT64_C(0xfffe000000000000)))
36         return 1;
37     if (test__floatunditf(0xfffffffffffffffeULL, UINT64_C(0x403effffffffffff), UINT64_C(0xfffc000000000000)))
38         return 1;
39     if (test__floatunditf(0x8000000000000000ULL, UINT64_C(0x403e000000000000), UINT64_C(0x0)))
40         return 1;
41     if (test__floatunditf(0x7fffffffffffffffULL, UINT64_C(0x403dffffffffffff), UINT64_C(0xfffc000000000000)))
42         return 1;
43     if (test__floatunditf(0x123456789abcdef1ULL, UINT64_C(0x403b23456789abcd), UINT64_C(0xef10000000000000)))
44         return 1;
45     if (test__floatunditf(0x2ULL, UINT64_C(0x4000000000000000), UINT64_C(0x0)))
46         return 1;
47     if (test__floatunditf(0x1ULL, UINT64_C(0x3fff000000000000), UINT64_C(0x0)))
48         return 1;
49     if (test__floatunditf(0x0ULL, UINT64_C(0x0), UINT64_C(0x0)))
50         return 1;
51 
52 #else
53     printf("skipped\n");
54 
55 #endif
56     return 0;
57 }
58