1 // RUN: %clang_builtins %s %librt -o %t && %run %t
2 // REQUIRES: librt_has_floatuntitf
3 
4 #define QUAD_PRECISION
5 #include "fp_lib.h"
6 #include "int_lib.h"
7 #include <float.h>
8 #include <stdio.h>
9 
10 #if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT)
11 
12 /* Returns: convert a tu_int to a fp_t, rounding toward even. */
13 
14 /* Assumption: fp_t is a IEEE 128 bit floating point type
15  *             tu_int is a 128 bit integral type
16  */
17 
18 /* seee eeee eeee eeee mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm |
19  * mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
20  */
21 
22 COMPILER_RT_ABI fp_t __floatuntitf(tu_int a);
23 
test__floatuntitf(tu_int a,fp_t expected)24 int test__floatuntitf(tu_int a, fp_t expected) {
25     fp_t x = __floatuntitf(a);
26     if (x != expected) {
27         utwords at;
28         at.all = a;
29         printf("error in __floatuntitf(0x%.16llX%.16llX) = %LA, expected %LA\n",
30                at.s.high, at.s.low, x, expected);
31     }
32     return x != expected;
33 }
34 
35 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
36 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
37 char assumption_3[sizeof(fp_t)*CHAR_BIT == 128] = {0};
38 
39 #endif
40 
main()41 int main() {
42 #if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT)
43     if (test__floatuntitf(0, 0.0))
44         return 1;
45 
46     if (test__floatuntitf(1, 1.0))
47         return 1;
48     if (test__floatuntitf(2, 2.0))
49         return 1;
50     if (test__floatuntitf(20, 20.0))
51         return 1;
52 
53     if (test__floatuntitf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
54         return 1;
55     if (test__floatuntitf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
56         return 1;
57     if (test__floatuntitf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
58         return 1;
59     if (test__floatuntitf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
60         return 1;
61     if (test__floatuntitf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
62         return 1;
63     if (test__floatuntitf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
64         return 1;
65     if (test__floatuntitf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
66         return 1;
67 
68     if (test__floatuntitf(0x8000008000000000ULL, 0x8.000008p+60))
69         return 1;
70     if (test__floatuntitf(0x8000000000000800ULL, 0x8.0000000000008p+60))
71         return 1;
72     if (test__floatuntitf(0x8000010000000000ULL, 0x8.00001p+60))
73         return 1;
74     if (test__floatuntitf(0x8000000000001000ULL, 0x8.000000000001p+60))
75         return 1;
76 
77     if (test__floatuntitf(0x8000000000000000ULL, 0x8p+60))
78         return 1;
79     if (test__floatuntitf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
80         return 1;
81 
82     if (test__floatuntitf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
83         return 1;
84 
85     if (test__floatuntitf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
86         return 1;
87     if (test__floatuntitf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
88         return 1;
89     if (test__floatuntitf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
90         return 1;
91     if (test__floatuntitf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
92         return 1;
93     if (test__floatuntitf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
94         return 1;
95 
96     if (test__floatuntitf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
97         return 1;
98     if (test__floatuntitf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
99         return 1;
100     if (test__floatuntitf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
101         return 1;
102     if (test__floatuntitf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
103         return 1;
104     if (test__floatuntitf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
105         return 1;
106 
107     if (test__floatuntitf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
108         return 1;
109     if (test__floatuntitf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496D08p+57L))
110         return 1;
111     if (test__floatuntitf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496D8p+57L))
112         return 1;
113     if (test__floatuntitf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496DCp+57L))
114         return 1;
115     if (test__floatuntitf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496DBp+57L))
116         return 1;
117     if (test__floatuntitf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496DF8p+57L))
118         return 1;
119     if (test__floatuntitf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496E08p+57L))
120         return 1;
121     if (test__floatuntitf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496E38p+57L))
122         return 1;
123     if (test__floatuntitf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496E4p+57L))
124         return 1;
125     if (test__floatuntitf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496E78p+57L))
126         return 1;
127     if (test__floatuntitf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496E8p+57L))
128         return 1;
129     if (test__floatuntitf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496E88p+57L))
130         return 1;
131     if (test__floatuntitf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496ECp+57L))
132         return 1;
133     if (test__floatuntitf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496EF8p+57L))
134         return 1;
135     if (test__floatuntitf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
136         return 1;
137 
138     if (test__floatuntitf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121L))
139         return 1;
140     if (test__floatuntitf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496D08p+121L))
141         return 1;
142     if (test__floatuntitf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496D8p+121L))
143         return 1;
144     if (test__floatuntitf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496DCp+121L))
145         return 1;
146     if (test__floatuntitf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496DBp+121L))
147         return 1;
148     if (test__floatuntitf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496DF8p+121L))
149         return 1;
150     if (test__floatuntitf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496E08p+121L))
151         return 1;
152     if (test__floatuntitf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496E38p+121L))
153         return 1;
154     if (test__floatuntitf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496E4p+121L))
155         return 1;
156     if (test__floatuntitf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496E78p+121L))
157         return 1;
158     if (test__floatuntitf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496E8p+121L))
159         return 1;
160     if (test__floatuntitf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496E88p+121L))
161         return 1;
162     if (test__floatuntitf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496ECp+121L))
163         return 1;
164     if (test__floatuntitf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496EF8p+121L))
165         return 1;
166     if (test__floatuntitf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121L))
167         return 1;
168 
169     if (test__floatuntitf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL), 0x1.FFFFFFFFFFFFFFFEp+63L))
170         return 1;
171 
172     if (test__floatuntitf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x0000000000000000LL),
173                           0x1.FFFFFFFFFFFFFFFEp+127L))
174         return 1;
175     if (test__floatuntitf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL),
176                           0x1.0000000000000000p+128L))
177         return 1;
178 
179     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC2801LL),
180                         0x1.23456789ABCDEF0123456789ABC3p+124L))
181         return 1;
182     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC3000LL),
183                         0x1.23456789ABCDEF0123456789ABC3p+124L))
184         return 1;
185     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC37FFLL),
186                         0x1.23456789ABCDEF0123456789ABC3p+124L))
187         return 1;
188     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC3800LL),
189                         0x1.23456789ABCDEF0123456789ABC4p+124L))
190         return 1;
191     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4000LL),
192                         0x1.23456789ABCDEF0123456789ABC4p+124L))
193         return 1;
194     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC47FFLL),
195                         0x1.23456789ABCDEF0123456789ABC4p+124L))
196         return 1;
197     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4800LL),
198                         0x1.23456789ABCDEF0123456789ABC4p+124L))
199         return 1;
200     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4801LL),
201                         0x1.23456789ABCDEF0123456789ABC5p+124L))
202         return 1;
203     if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC57FFLL),
204                         0x1.23456789ABCDEF0123456789ABC5p+124L))
205         return 1;
206 #else
207     printf("skipped\n");
208 #endif
209    return 0;
210 }
211