1//===-- floatdidf.c - Test __floatdidf ------------------------------------===//
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 __floatdidf 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//             di_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
25COMPILER_RT_ABI double __floatdidf(di_int a);
26
27int test__floatdidf(di_int a, double expected)
28{
29    double x = __floatdidf(a);
30    if (x != expected)
31        printf("error in __floatdidf(%llX) = %a, expected %a\n", a, x, expected);
32    return x != expected;
33}
34
35char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
36char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
37char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
38
39int main()
40{
41    if (test__floatdidf(0, 0.0))
42        return 1;
43
44    if (test__floatdidf(1, 1.0))
45        return 1;
46    if (test__floatdidf(2, 2.0))
47        return 1;
48    if (test__floatdidf(20, 20.0))
49        return 1;
50    if (test__floatdidf(-1, -1.0))
51        return 1;
52    if (test__floatdidf(-2, -2.0))
53        return 1;
54    if (test__floatdidf(-20, -20.0))
55        return 1;
56
57    if (test__floatdidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
58        return 1;
59    if (test__floatdidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
60        return 1;
61    if (test__floatdidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
62        return 1;
63    if (test__floatdidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
64        return 1;
65
66    if (test__floatdidf(0x8000008000000000LL, -0x1.FFFFFEp+62))
67        return 1;
68    if (test__floatdidf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
69        return 1;
70    if (test__floatdidf(0x8000010000000000LL, -0x1.FFFFFCp+62))
71        return 1;
72    if (test__floatdidf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
73        return 1;
74
75    if (test__floatdidf(0x8000000000000000LL, -0x1.000000p+63))
76        return 1;
77    if (test__floatdidf(0x8000000000000001LL, -0x1.000000p+63))
78        return 1;
79
80    if (test__floatdidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
81        return 1;
82
83    if (test__floatdidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
84        return 1;
85    if (test__floatdidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
86        return 1;
87    if (test__floatdidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
88        return 1;
89    if (test__floatdidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
90        return 1;
91    if (test__floatdidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
92        return 1;
93
94    if (test__floatdidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
95        return 1;
96    if (test__floatdidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
97        return 1;
98    if (test__floatdidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
99        return 1;
100    if (test__floatdidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
101        return 1;
102    if (test__floatdidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
103        return 1;
104
105    if (test__floatdidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
106        return 1;
107    if (test__floatdidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
108        return 1;
109    if (test__floatdidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
110        return 1;
111    if (test__floatdidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
112        return 1;
113    if (test__floatdidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
114        return 1;
115    if (test__floatdidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
116        return 1;
117    if (test__floatdidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
118        return 1;
119    if (test__floatdidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
120        return 1;
121    if (test__floatdidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
122        return 1;
123    if (test__floatdidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
124        return 1;
125    if (test__floatdidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
126        return 1;
127    if (test__floatdidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
128        return 1;
129    if (test__floatdidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
130        return 1;
131    if (test__floatdidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
132        return 1;
133    if (test__floatdidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
134        return 1;
135
136   return 0;
137}
138