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(unsigned long long a);
16
test__floatunditf(unsigned long long a,uint64_t expectedHi,uint64_t expectedLo)17 int test__floatunditf(unsigned long long 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
main()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