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
25double __floatundidf(du_int a);
26
27int 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
36char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
37char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
38char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
39
40int 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