1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_trunctfhf2
3
4 #include "int_lib.h"
5 #include <stdio.h>
6
7 #if __LDBL_MANT_DIG__ == 113 && defined(COMPILER_RT_HAS_FLOAT16)
8
9 #include "fp_test.h"
10
11 TYPE_FP16 __trunctfhf2(long double a);
12
test__trunctfhf2(long double a,uint16_t expected)13 int test__trunctfhf2(long double a, uint16_t expected) {
14 TYPE_FP16 x = __trunctfhf2(a);
15 int ret = compareResultH(x, expected);
16
17 if (ret) {
18 printf("error in test__trunctfhf2(%.20Lf) = %#.4x, "
19 "expected %#.4x\n",
20 a, toRep16(x), expected);
21 }
22 return ret;
23 }
24
25 char assumption_1[sizeof(TYPE_FP16) * CHAR_BIT == 16] = {0};
26
27 #endif
28
main()29 int main() {
30 #if __LDBL_MANT_DIG__ == 113 && defined(COMPILER_RT_HAS_FLOAT16)
31 // qNaN
32 if (test__trunctfhf2(makeQNaN128(),
33 UINT16_C(0x7e00)))
34 return 1;
35 // NaN
36 if (test__trunctfhf2(makeNaN128(UINT64_C(0x810000000000)),
37 UINT16_C(0x7e00)))
38 return 1;
39 // inf
40 if (test__trunctfhf2(makeInf128(),
41 UINT16_C(0x7c00)))
42 return 1;
43 if (test__trunctfhf2(-makeInf128(),
44 UINT16_C(0xfc00)))
45 return 1;
46 // zero
47 if (test__trunctfhf2(0.0L, UINT16_C(0x0)))
48 return 1;
49 if (test__trunctfhf2(-0.0L, UINT16_C(0x8000)))
50 return 1;
51
52 if (test__trunctfhf2(3.1415926535L,
53 UINT16_C(0x4248)))
54 return 1;
55 if (test__trunctfhf2(-3.1415926535L,
56 UINT16_C(0xc248)))
57 return 1;
58 if (test__trunctfhf2(0x1.987124876876324p+100L,
59 UINT16_C(0x7c00)))
60 return 1;
61 if (test__trunctfhf2(0x1.987124876876324p+12L,
62 UINT16_C(0x6e62)))
63 return 1;
64 if (test__trunctfhf2(0x1.0p+0L,
65 UINT16_C(0x3c00)))
66 return 1;
67 if (test__trunctfhf2(0x1.0p-14L,
68 UINT16_C(0x0400)))
69 return 1;
70 // denormal
71 if (test__trunctfhf2(0x1.0p-20L,
72 UINT16_C(0x0010)))
73 return 1;
74 if (test__trunctfhf2(0x1.0p-24L,
75 UINT16_C(0x0001)))
76 return 1;
77 if (test__trunctfhf2(-0x1.0p-24L,
78 UINT16_C(0x8001)))
79 return 1;
80 if (test__trunctfhf2(0x1.5p-25L,
81 UINT16_C(0x0001)))
82 return 1;
83 // and back to zero
84 if (test__trunctfhf2(0x1.0p-25L,
85 UINT16_C(0x0000)))
86 return 1;
87 if (test__trunctfhf2(-0x1.0p-25L,
88 UINT16_C(0x8000)))
89 return 1;
90 // max (precise)
91 if (test__trunctfhf2(65504.0L,
92 UINT16_C(0x7bff)))
93 return 1;
94 // max (rounded)
95 if (test__trunctfhf2(65519.0L,
96 UINT16_C(0x7bff)))
97 return 1;
98 // max (to +inf)
99 if (test__trunctfhf2(65520.0L,
100 UINT16_C(0x7c00)))
101 return 1;
102 if (test__trunctfhf2(65536.0L,
103 UINT16_C(0x7c00)))
104 return 1;
105 if (test__trunctfhf2(-65520.0L,
106 UINT16_C(0xfc00)))
107 return 1;
108
109 if (test__trunctfhf2(0x1.23a2abb4a2ddee355f36789abcdep+5L,
110 UINT16_C(0x508f)))
111 return 1;
112 if (test__trunctfhf2(0x1.e3d3c45bd3abfd98b76a54cc321fp-9L,
113 UINT16_C(0x1b8f)))
114 return 1;
115 if (test__trunctfhf2(0x1.234eebb5faa678f4488693abcdefp+453L,
116 UINT16_C(0x7c00)))
117 return 1;
118 if (test__trunctfhf2(0x1.edcba9bb8c76a5a43dd21f334634p-43L,
119 UINT16_C(0x0)))
120 return 1;
121 #else
122 printf("skipped\n");
123 #endif
124 return 0;
125 }
126