1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_floatunditf
3
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 been
10 // fixed the defined(CRT_HAS_IEEE_TF) guard can be removed to enable it for
11 // 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 double
17
18 COMPILER_RT_ABI tf_float __floatunditf(du_int a);
19
test__floatunditf(du_int a,uint64_t expectedHi,uint64_t expectedLo)20 int 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
31 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
32
33 #endif
34
main()35 int 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 #else
60 printf("skipped\n");
61
62 #endif
63 return 0;
64 }
65