1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_floattixf
3 // REQUIRES: x86-target-arch
4 
5 #include "int_lib.h"
6 #include <float.h>
7 #include <stdio.h>
8 
9 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
10 
11 // Returns: convert a to a long double, rounding toward even.
12 
13 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
14 //             ti_int is a 128 bit integral type
15 
16 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
17 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
18 
19 COMPILER_RT_ABI long double __floattixf(ti_int a);
20 
test__floattixf(ti_int a,long double expected)21 int test__floattixf(ti_int a, long double expected)
22 {
23     long double x = __floattixf(a);
24     if (x != expected)
25     {
26         twords at;
27         at.all = a;
28         printf("error in __floattixf(0x%.16llX%.16llX) = %LA, expected %LA\n",
29                at.s.high, at.s.low, x, expected);
30     }
31     return x != expected;
32 }
33 
34 COMPILE_TIME_ASSERT(sizeof(ti_int) == 2*sizeof(di_int));
35 COMPILE_TIME_ASSERT(sizeof(ti_int)*CHAR_BIT == 128);
36 COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128);
37 
38 #endif
39 
main()40 int main()
41 {
42 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
43     if (test__floattixf(0, 0.0))
44         return 1;
45 
46     if (test__floattixf(1, 1.0))
47         return 1;
48     if (test__floattixf(2, 2.0))
49         return 1;
50     if (test__floattixf(20, 20.0))
51         return 1;
52     if (test__floattixf(-1, -1.0))
53         return 1;
54     if (test__floattixf(-2, -2.0))
55         return 1;
56     if (test__floattixf(-20, -20.0))
57         return 1;
58 
59     if (test__floattixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
60         return 1;
61     if (test__floattixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
62         return 1;
63     if (test__floattixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
64         return 1;
65     if (test__floattixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
66         return 1;
67 
68     if (test__floattixf(make_ti(0x8000008000000000LL, 0), -0x1.FFFFFEp+126))
69         return 1;
70     if (test__floattixf(make_ti(0x8000000000000800LL, 0), -0x1.FFFFFFFFFFFFEp+126))
71         return 1;
72     if (test__floattixf(make_ti(0x8000010000000000LL, 0), -0x1.FFFFFCp+126))
73         return 1;
74     if (test__floattixf(make_ti(0x8000000000001000LL, 0), -0x1.FFFFFFFFFFFFCp+126))
75         return 1;
76 
77     if (test__floattixf(make_ti(0x8000000000000000LL, 0), -0x1.000000p+127))
78         return 1;
79     if (test__floattixf(make_ti(0x8000000000000001LL, 0), -0x1.FFFFFFFFFFFFFFFCp+126L))
80         return 1;
81 
82     if (test__floattixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
83         return 1;
84 
85     if (test__floattixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
86         return 1;
87     if (test__floattixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
88         return 1;
89     if (test__floattixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
90         return 1;
91     if (test__floattixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
92         return 1;
93     if (test__floattixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
94         return 1;
95 
96     if (test__floattixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
97         return 1;
98     if (test__floattixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
99         return 1;
100     if (test__floattixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
101         return 1;
102     if (test__floattixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
103         return 1;
104     if (test__floattixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
105         return 1;
106 
107     if (test__floattixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
108         return 1;
109     if (test__floattixf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496D08p+57L))
110         return 1;
111     if (test__floattixf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496D8p+57L))
112         return 1;
113     if (test__floattixf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496DCp+57L))
114         return 1;
115     if (test__floattixf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496DBp+57L))
116         return 1;
117     if (test__floattixf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496DF8p+57L))
118         return 1;
119     if (test__floattixf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496E08p+57L))
120         return 1;
121     if (test__floattixf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496E38p+57L))
122         return 1;
123     if (test__floattixf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496E4p+57L))
124         return 1;
125     if (test__floattixf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496E78p+57L))
126         return 1;
127     if (test__floattixf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496E8p+57L))
128         return 1;
129     if (test__floattixf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496E88p+57L))
130         return 1;
131     if (test__floattixf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496ECp+57L))
132         return 1;
133     if (test__floattixf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496EF8p+57L))
134         return 1;
135     if (test__floattixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
136         return 1;
137 
138     if (test__floattixf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121L))
139         return 1;
140     if (test__floattixf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496D08p+121L))
141         return 1;
142     if (test__floattixf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496D8p+121L))
143         return 1;
144     if (test__floattixf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496DCp+121L))
145         return 1;
146     if (test__floattixf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496DBp+121L))
147         return 1;
148     if (test__floattixf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496DF8p+121L))
149         return 1;
150     if (test__floattixf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496E08p+121L))
151         return 1;
152     if (test__floattixf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496E38p+121L))
153         return 1;
154     if (test__floattixf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496E4p+121L))
155         return 1;
156     if (test__floattixf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496E78p+121L))
157         return 1;
158     if (test__floattixf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496E8p+121L))
159         return 1;
160     if (test__floattixf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496E88p+121L))
161         return 1;
162     if (test__floattixf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496ECp+121L))
163         return 1;
164     if (test__floattixf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496EF8p+121L))
165         return 1;
166     if (test__floattixf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121L))
167         return 1;
168 
169     if (test__floattixf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL), 0x1.FFFFFFFFFFFFFFFEp+63L))
170         return 1;
171 
172     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456100000000001LL),
173                         0x1.2345678901234562p+108L))
174         return 1;
175     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456200000000000LL),
176                         0x1.2345678901234562p+108L))
177         return 1;
178     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34562FFFFFFFFFFFLL),
179                         0x1.2345678901234562p+108L))
180         return 1;
181     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456300000000000LL),
182                         0x1.2345678901234564p+108L))
183         return 1;
184     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456400000000000LL),
185                         0x1.2345678901234564p+108L))
186         return 1;
187     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34564FFFFFFFFFFFLL),
188                         0x1.2345678901234564p+108L))
189         return 1;
190     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456500000000000LL),
191                         0x1.2345678901234564p+108L))
192         return 1;
193     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456500000000001LL),
194                         0x1.2345678901234566p+108L))
195         return 1;
196     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34566FFFFFFFFFFFLL),
197                         0x1.2345678901234566p+108L))
198         return 1;
199 #else
200     printf("skipped\n");
201 #endif
202    return 0;
203 }
204