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 COMPILER_RT_ABI 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