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1 //===-- floatundixf_test.c - Test __floatundixf ---------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file tests __floatundixf for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "int_lib.h"
15 #include <stdio.h>
16 
17 
18 #if HAS_80_BIT_LONG_DOUBLE
19 // Returns: convert a to a long double, rounding toward even.
20 
21 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
22 //             du_int is a 64 bit integral type
23 
24 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
25 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
26 
27 COMPILER_RT_ABI long double __floatundixf(du_int a);
28 
test__floatundixf(du_int a,long double expected)29 int test__floatundixf(du_int a, long double expected)
30 {
31     long double x = __floatundixf(a);
32     if (x != expected)
33         printf("error in __floatundixf(%llX) = %LA, expected %LA\n",
34                a, x, expected);
35     return x != expected;
36 }
37 
38 char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
39 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
40 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
41 #endif
42 
main()43 int main()
44 {
45 #if HAS_80_BIT_LONG_DOUBLE
46     if (test__floatundixf(0, 0.0))
47         return 1;
48 
49     if (test__floatundixf(1, 1.0))
50         return 1;
51     if (test__floatundixf(2, 2.0))
52         return 1;
53     if (test__floatundixf(20, 20.0))
54         return 1;
55 
56     if (test__floatundixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
57         return 1;
58     if (test__floatundixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
59         return 1;
60     if (test__floatundixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
61         return 1;
62     if (test__floatundixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
63         return 1;
64     if (test__floatundixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
65         return 1;
66     if (test__floatundixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
67         return 1;
68     if (test__floatundixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
69         return 1;
70 
71     if (test__floatundixf(0x8000008000000000ULL, 0x8.000008p+60))
72         return 1;
73     if (test__floatundixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
74         return 1;
75     if (test__floatundixf(0x8000010000000000ULL, 0x8.00001p+60))
76         return 1;
77     if (test__floatundixf(0x8000000000001000ULL, 0x8.000000000001p+60))
78         return 1;
79 
80     if (test__floatundixf(0x8000000000000000ULL, 0x8p+60))
81         return 1;
82     if (test__floatundixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
83         return 1;
84 
85     if (test__floatundixf(0x0007FB72E8000000ULL, 0x1.FEDCBAp+50))
86         return 1;
87 
88     if (test__floatundixf(0x0007FB72EA000000ULL, 0x1.FEDCBA8p+50))
89         return 1;
90     if (test__floatundixf(0x0007FB72EB000000ULL, 0x1.FEDCBACp+50))
91         return 1;
92     if (test__floatundixf(0x0007FB72EBFFFFFFULL, 0x1.FEDCBAFFFFFFCp+50))
93         return 1;
94     if (test__floatundixf(0x0007FB72EC000000ULL, 0x1.FEDCBBp+50))
95         return 1;
96     if (test__floatundixf(0x0007FB72E8000001ULL, 0x1.FEDCBA0000004p+50))
97         return 1;
98 
99     if (test__floatundixf(0x0007FB72E6000000ULL, 0x1.FEDCB98p+50))
100         return 1;
101     if (test__floatundixf(0x0007FB72E7000000ULL, 0x1.FEDCB9Cp+50))
102         return 1;
103     if (test__floatundixf(0x0007FB72E7FFFFFFULL, 0x1.FEDCB9FFFFFFCp+50))
104         return 1;
105     if (test__floatundixf(0x0007FB72E4000001ULL, 0x1.FEDCB90000004p+50))
106         return 1;
107     if (test__floatundixf(0x0007FB72E4000000ULL, 0x1.FEDCB9p+50))
108         return 1;
109 
110     if (test__floatundixf(0x023479FD0E092DC0ULL, 0x1.1A3CFE870496Ep+57))
111         return 1;
112     if (test__floatundixf(0x023479FD0E092DA1ULL, 0x8.D1E7F43824B684p+54L))
113         return 1;
114     if (test__floatundixf(0x023479FD0E092DB0ULL, 0x8.D1E7f43824B6Cp+54L))
115         return 1;
116     if (test__floatundixf(0x023479FD0E092DB8ULL, 0x8.D1E7F43824B6Ep+54L))
117         return 1;
118     if (test__floatundixf(0x023479FD0E092DB6ULL, 0x8.D1E7F43824B6D8p+54L))
119         return 1;
120     if (test__floatundixf(0x023479FD0E092DBFULL, 0x8.D1E7F43824B6FCp+54L))
121         return 1;
122     if (test__floatundixf(0x023479FD0E092DC1ULL, 0x8.D1E7F43824B704p+54L))
123         return 1;
124     if (test__floatundixf(0x023479FD0E092DC7ULL, 0x8.D1E7F43824B71Cp+54L))
125         return 1;
126     if (test__floatundixf(0x023479FD0E092DC8ULL, 0x8.D1E7F43824B72p+54L))
127         return 1;
128     if (test__floatundixf(0x023479FD0E092DCFULL, 0x8.D1E7F43824B73Cp+54L))
129         return 1;
130     if (test__floatundixf(0x023479FD0E092DD0ULL, 0x8.D1E7F43824B74p+54L))
131         return 1;
132     if (test__floatundixf(0x023479FD0E092DD1ULL, 0x8.D1E7F43824B744p+54L))
133         return 1;
134     if (test__floatundixf(0x023479FD0E092DD8ULL, 0x8.D1E7F43824B76p+54L))
135         return 1;
136     if (test__floatundixf(0x023479FD0E092DDFULL, 0x8.D1E7F43824B77Cp+54L))
137         return 1;
138     if (test__floatundixf(0x023479FD0E092DE0ULL, 0x1.1A3CFE870496Fp+57))
139         return 1;
140 
141 #else
142     printf("skipped\n");
143 #endif
144    return 0;
145 }
146