1 //===-- floatundidf_test.c - Test __floatundidf ---------------------------===//
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 __floatundidf for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "int_lib.h"
15 #include <float.h>
16 #include <stdio.h>
17 
18 // Returns: convert a to a double, rounding toward even.
19 
20 // Assumption: double is a IEEE 64 bit floating point type
21 //             du_int is a 64 bit integral type
22 
23 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
24 
25 double __floatundidf(du_int a);
26 
test__floatundidf(di_int a,double expected)27 int test__floatundidf(di_int a, double expected)
28 {
29     double x = __floatundidf(a);
30     if (x != expected)
31         printf("error in __floatundidf(%llX) = %a, expected %a\n",
32                a, x, expected);
33     return x != expected;
34 }
35 
36 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
37 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
38 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
39 
main()40 int main()
41 {
42     if (test__floatundidf(0, 0.0))
43         return 1;
44 
45     if (test__floatundidf(1, 1.0))
46         return 1;
47     if (test__floatundidf(2, 2.0))
48         return 1;
49     if (test__floatundidf(20, 20.0))
50         return 1;
51 
52     if (test__floatundidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
53         return 1;
54     if (test__floatundidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
55         return 1;
56     if (test__floatundidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
57         return 1;
58     if (test__floatundidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
59         return 1;
60 
61     if (test__floatundidf(0x8000008000000000LL, 0x1.000001p+63))
62         return 1;
63     if (test__floatundidf(0x8000000000000800LL, 0x1.0000000000001p+63))
64         return 1;
65     if (test__floatundidf(0x8000010000000000LL, 0x1.000002p+63))
66         return 1;
67     if (test__floatundidf(0x8000000000001000LL, 0x1.0000000000002p+63))
68         return 1;
69 
70     if (test__floatundidf(0x8000000000000000LL, 0x1p+63))
71         return 1;
72     if (test__floatundidf(0x8000000000000001LL, 0x1p+63))
73         return 1;
74 
75     if (test__floatundidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
76         return 1;
77 
78     if (test__floatundidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
79         return 1;
80     if (test__floatundidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
81         return 1;
82     if (test__floatundidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
83         return 1;
84     if (test__floatundidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
85         return 1;
86     if (test__floatundidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
87         return 1;
88 
89     if (test__floatundidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
90         return 1;
91     if (test__floatundidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
92         return 1;
93     if (test__floatundidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
94         return 1;
95     if (test__floatundidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
96         return 1;
97     if (test__floatundidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
98         return 1;
99 
100     if (test__floatundidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
101         return 1;
102     if (test__floatundidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
103         return 1;
104     if (test__floatundidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
105         return 1;
106     if (test__floatundidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
107         return 1;
108     if (test__floatundidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
109         return 1;
110     if (test__floatundidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
111         return 1;
112     if (test__floatundidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
113         return 1;
114     if (test__floatundidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
115         return 1;
116     if (test__floatundidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
117         return 1;
118     if (test__floatundidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
119         return 1;
120     if (test__floatundidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
121         return 1;
122     if (test__floatundidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
123         return 1;
124     if (test__floatundidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
125         return 1;
126     if (test__floatundidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
127         return 1;
128     if (test__floatundidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
129         return 1;
130 
131    return 0;
132 }
133