1 //===-- floattidf.c - Test __floattidf ------------------------------------===//
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 __floattidf for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "int_lib.h"
15 #include <float.h>
16 #include <stdio.h>
17 
18 #ifdef CRT_HAS_128BIT
19 
20 // Returns: convert a to a double, rounding toward even.
21 
22 // Assumption: double is a IEEE 64 bit floating point type
23 //             ti_int is a 64 bit integral type
24 
25 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
26 
27 double __floattidf(ti_int a);
28 
test__floattidf(ti_int a,double expected)29 int test__floattidf(ti_int a, double expected)
30 {
31     double x = __floattidf(a);
32     if (x != expected)
33     {
34         twords at;
35         at.all = a;
36         printf("error in __floattidf(0x%.16llX%.16llX) = %a, expected %a\n",
37                at.s.high, at.s.low, x, expected);
38     }
39     return x != expected;
40 }
41 
42 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
43 char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
44 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
45 
46 #endif
47 
main()48 int main()
49 {
50 #ifdef CRT_HAS_128BIT
51     if (test__floattidf(0, 0.0))
52         return 1;
53 
54     if (test__floattidf(1, 1.0))
55         return 1;
56     if (test__floattidf(2, 2.0))
57         return 1;
58     if (test__floattidf(20, 20.0))
59         return 1;
60     if (test__floattidf(-1, -1.0))
61         return 1;
62     if (test__floattidf(-2, -2.0))
63         return 1;
64     if (test__floattidf(-20, -20.0))
65         return 1;
66 
67     if (test__floattidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
68         return 1;
69     if (test__floattidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
70         return 1;
71     if (test__floattidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
72         return 1;
73     if (test__floattidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
74         return 1;
75 
76     if (test__floattidf(make_ti(0x8000008000000000LL, 0), -0x1.FFFFFEp+126))
77         return 1;
78     if (test__floattidf(make_ti(0x8000000000000800LL, 0), -0x1.FFFFFFFFFFFFEp+126))
79         return 1;
80     if (test__floattidf(make_ti(0x8000010000000000LL, 0), -0x1.FFFFFCp+126))
81         return 1;
82     if (test__floattidf(make_ti(0x8000000000001000LL, 0), -0x1.FFFFFFFFFFFFCp+126))
83         return 1;
84 
85     if (test__floattidf(make_ti(0x8000000000000000LL, 0), -0x1.000000p+127))
86         return 1;
87     if (test__floattidf(make_ti(0x8000000000000001LL, 0), -0x1.000000p+127))
88         return 1;
89 
90     if (test__floattidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
91         return 1;
92 
93     if (test__floattidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
94         return 1;
95     if (test__floattidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
96         return 1;
97     if (test__floattidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
98         return 1;
99     if (test__floattidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
100         return 1;
101     if (test__floattidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
102         return 1;
103 
104     if (test__floattidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
105         return 1;
106     if (test__floattidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
107         return 1;
108     if (test__floattidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
109         return 1;
110     if (test__floattidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
111         return 1;
112     if (test__floattidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
113         return 1;
114 
115     if (test__floattidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
116         return 1;
117     if (test__floattidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
118         return 1;
119     if (test__floattidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
120         return 1;
121     if (test__floattidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
122         return 1;
123     if (test__floattidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
124         return 1;
125     if (test__floattidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
126         return 1;
127     if (test__floattidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
128         return 1;
129     if (test__floattidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
130         return 1;
131     if (test__floattidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
132         return 1;
133     if (test__floattidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
134         return 1;
135     if (test__floattidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
136         return 1;
137     if (test__floattidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
138         return 1;
139     if (test__floattidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
140         return 1;
141     if (test__floattidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
142         return 1;
143     if (test__floattidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
144         return 1;
145 
146     if (test__floattidf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121))
147         return 1;
148     if (test__floattidf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496Dp+121))
149         return 1;
150     if (test__floattidf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496Ep+121))
151         return 1;
152     if (test__floattidf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496Ep+121))
153         return 1;
154     if (test__floattidf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496Ep+121))
155         return 1;
156     if (test__floattidf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496Ep+121))
157         return 1;
158     if (test__floattidf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496Ep+121))
159         return 1;
160     if (test__floattidf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496Ep+121))
161         return 1;
162     if (test__floattidf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496Ep+121))
163         return 1;
164     if (test__floattidf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496Ep+121))
165         return 1;
166     if (test__floattidf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496Ep+121))
167         return 1;
168     if (test__floattidf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496Fp+121))
169         return 1;
170     if (test__floattidf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496Fp+121))
171         return 1;
172     if (test__floattidf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496Fp+121))
173         return 1;
174     if (test__floattidf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121))
175         return 1;
176 #else
177     printf("skipped\n");
178 #endif
179    return 0;
180 }
181