1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_floatundixf
3 
4 #include "int_lib.h"
5 #include <stdio.h>
6 
7 
8 #if HAS_80_BIT_LONG_DOUBLE
9 // Returns: convert a to a long double, rounding toward even.
10 
11 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
12 //             du_int is a 64 bit integral type
13 
14 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
15 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
16 
17 COMPILER_RT_ABI long double __floatundixf(du_int a);
18 
test__floatundixf(du_int a,long double expected)19 int test__floatundixf(du_int a, long double expected)
20 {
21     long double x = __floatundixf(a);
22     if (x != expected)
23         printf("error in __floatundixf(%llX) = %LA, expected %LA\n",
24                a, x, expected);
25     return x != expected;
26 }
27 
28 char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
29 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
30 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
31 #endif
32 
main()33 int main()
34 {
35 #if HAS_80_BIT_LONG_DOUBLE
36     if (test__floatundixf(0, 0.0))
37         return 1;
38 
39     if (test__floatundixf(1, 1.0))
40         return 1;
41     if (test__floatundixf(2, 2.0))
42         return 1;
43     if (test__floatundixf(20, 20.0))
44         return 1;
45 
46     if (test__floatundixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
47         return 1;
48     if (test__floatundixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
49         return 1;
50     if (test__floatundixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
51         return 1;
52     if (test__floatundixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
53         return 1;
54     if (test__floatundixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
55         return 1;
56     if (test__floatundixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
57         return 1;
58     if (test__floatundixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
59         return 1;
60 
61     if (test__floatundixf(0x8000008000000000ULL, 0x8.000008p+60))
62         return 1;
63     if (test__floatundixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
64         return 1;
65     if (test__floatundixf(0x8000010000000000ULL, 0x8.00001p+60))
66         return 1;
67     if (test__floatundixf(0x8000000000001000ULL, 0x8.000000000001p+60))
68         return 1;
69 
70     if (test__floatundixf(0x8000000000000000ULL, 0x8p+60))
71         return 1;
72     if (test__floatundixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
73         return 1;
74 
75     if (test__floatundixf(0x0007FB72E8000000ULL, 0x1.FEDCBAp+50))
76         return 1;
77 
78     if (test__floatundixf(0x0007FB72EA000000ULL, 0x1.FEDCBA8p+50))
79         return 1;
80     if (test__floatundixf(0x0007FB72EB000000ULL, 0x1.FEDCBACp+50))
81         return 1;
82     if (test__floatundixf(0x0007FB72EBFFFFFFULL, 0x1.FEDCBAFFFFFFCp+50))
83         return 1;
84     if (test__floatundixf(0x0007FB72EC000000ULL, 0x1.FEDCBBp+50))
85         return 1;
86     if (test__floatundixf(0x0007FB72E8000001ULL, 0x1.FEDCBA0000004p+50))
87         return 1;
88 
89     if (test__floatundixf(0x0007FB72E6000000ULL, 0x1.FEDCB98p+50))
90         return 1;
91     if (test__floatundixf(0x0007FB72E7000000ULL, 0x1.FEDCB9Cp+50))
92         return 1;
93     if (test__floatundixf(0x0007FB72E7FFFFFFULL, 0x1.FEDCB9FFFFFFCp+50))
94         return 1;
95     if (test__floatundixf(0x0007FB72E4000001ULL, 0x1.FEDCB90000004p+50))
96         return 1;
97     if (test__floatundixf(0x0007FB72E4000000ULL, 0x1.FEDCB9p+50))
98         return 1;
99 
100     if (test__floatundixf(0x023479FD0E092DC0ULL, 0x1.1A3CFE870496Ep+57))
101         return 1;
102     if (test__floatundixf(0x023479FD0E092DA1ULL, 0x8.D1E7F43824B684p+54L))
103         return 1;
104     if (test__floatundixf(0x023479FD0E092DB0ULL, 0x8.D1E7f43824B6Cp+54L))
105         return 1;
106     if (test__floatundixf(0x023479FD0E092DB8ULL, 0x8.D1E7F43824B6Ep+54L))
107         return 1;
108     if (test__floatundixf(0x023479FD0E092DB6ULL, 0x8.D1E7F43824B6D8p+54L))
109         return 1;
110     if (test__floatundixf(0x023479FD0E092DBFULL, 0x8.D1E7F43824B6FCp+54L))
111         return 1;
112     if (test__floatundixf(0x023479FD0E092DC1ULL, 0x8.D1E7F43824B704p+54L))
113         return 1;
114     if (test__floatundixf(0x023479FD0E092DC7ULL, 0x8.D1E7F43824B71Cp+54L))
115         return 1;
116     if (test__floatundixf(0x023479FD0E092DC8ULL, 0x8.D1E7F43824B72p+54L))
117         return 1;
118     if (test__floatundixf(0x023479FD0E092DCFULL, 0x8.D1E7F43824B73Cp+54L))
119         return 1;
120     if (test__floatundixf(0x023479FD0E092DD0ULL, 0x8.D1E7F43824B74p+54L))
121         return 1;
122     if (test__floatundixf(0x023479FD0E092DD1ULL, 0x8.D1E7F43824B744p+54L))
123         return 1;
124     if (test__floatundixf(0x023479FD0E092DD8ULL, 0x8.D1E7F43824B76p+54L))
125         return 1;
126     if (test__floatundixf(0x023479FD0E092DDFULL, 0x8.D1E7F43824B77Cp+54L))
127         return 1;
128     if (test__floatundixf(0x023479FD0E092DE0ULL, 0x1.1A3CFE870496Fp+57))
129         return 1;
130 
131 #else
132     printf("skipped\n");
133 #endif
134    return 0;
135 }
136