1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: librt_has_floatuntixf
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// tu_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
19COMPILER_RT_ABI long double __floatuntixf(tu_int a);
20
21int test__floatuntixf(tu_int a, long double expected)
22{
23 long double x = __floatuntixf(a);
24 if (x != expected)
25 {
26 utwords at;
27 at.all = a;
28 printf(format: "error in __floatuntixf(0x%.16llX%.16llX) = %LA, expected %LA\n",
29 at.s.high, at.s.low, x, expected);
30 }
31 return x != expected;
32}
33
34COMPILE_TIME_ASSERT(sizeof(tu_int) == 2*sizeof(du_int));
35COMPILE_TIME_ASSERT(sizeof(tu_int)*CHAR_BIT == 128);
36COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128);
37
38#endif
39
40int main()
41{
42#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
43 if (test__floatuntixf(a: 0, expected: 0.0))
44 return 1;
45
46 if (test__floatuntixf(a: 1, expected: 1.0))
47 return 1;
48 if (test__floatuntixf(a: 2, expected: 2.0))
49 return 1;
50 if (test__floatuntixf(a: 20, expected: 20.0))
51 return 1;
52
53 if (test__floatuntixf(a: 0x7FFFFF8000000000ULL, expected: 0x1.FFFFFEp+62))
54 return 1;
55 if (test__floatuntixf(a: 0x7FFFFFFFFFFFF800ULL, expected: 0x1.FFFFFFFFFFFFEp+62))
56 return 1;
57 if (test__floatuntixf(a: 0x7FFFFF0000000000ULL, expected: 0x1.FFFFFCp+62))
58 return 1;
59 if (test__floatuntixf(a: 0x7FFFFFFFFFFFF000ULL, expected: 0x1.FFFFFFFFFFFFCp+62))
60 return 1;
61 if (test__floatuntixf(a: 0x7FFFFFFFFFFFFFFFULL, expected: 0xF.FFFFFFFFFFFFFFEp+59L))
62 return 1;
63 if (test__floatuntixf(a: 0xFFFFFFFFFFFFFFFEULL, expected: 0xF.FFFFFFFFFFFFFFEp+60L))
64 return 1;
65 if (test__floatuntixf(a: 0xFFFFFFFFFFFFFFFFULL, expected: 0xF.FFFFFFFFFFFFFFFp+60L))
66 return 1;
67
68 if (test__floatuntixf(a: 0x8000008000000000ULL, expected: 0x8.000008p+60))
69 return 1;
70 if (test__floatuntixf(a: 0x8000000000000800ULL, expected: 0x8.0000000000008p+60))
71 return 1;
72 if (test__floatuntixf(a: 0x8000010000000000ULL, expected: 0x8.00001p+60))
73 return 1;
74 if (test__floatuntixf(a: 0x8000000000001000ULL, expected: 0x8.000000000001p+60))
75 return 1;
76
77 if (test__floatuntixf(a: 0x8000000000000000ULL, expected: 0x8p+60))
78 return 1;
79 if (test__floatuntixf(a: 0x8000000000000001ULL, expected: 0x8.000000000000001p+60L))
80 return 1;
81
82 if (test__floatuntixf(a: 0x0007FB72E8000000LL, expected: 0x1.FEDCBAp+50))
83 return 1;
84
85 if (test__floatuntixf(a: 0x0007FB72EA000000LL, expected: 0x1.FEDCBA8p+50))
86 return 1;
87 if (test__floatuntixf(a: 0x0007FB72EB000000LL, expected: 0x1.FEDCBACp+50))
88 return 1;
89 if (test__floatuntixf(a: 0x0007FB72EBFFFFFFLL, expected: 0x1.FEDCBAFFFFFFCp+50))
90 return 1;
91 if (test__floatuntixf(a: 0x0007FB72EC000000LL, expected: 0x1.FEDCBBp+50))
92 return 1;
93 if (test__floatuntixf(a: 0x0007FB72E8000001LL, expected: 0x1.FEDCBA0000004p+50))
94 return 1;
95
96 if (test__floatuntixf(a: 0x0007FB72E6000000LL, expected: 0x1.FEDCB98p+50))
97 return 1;
98 if (test__floatuntixf(a: 0x0007FB72E7000000LL, expected: 0x1.FEDCB9Cp+50))
99 return 1;
100 if (test__floatuntixf(a: 0x0007FB72E7FFFFFFLL, expected: 0x1.FEDCB9FFFFFFCp+50))
101 return 1;
102 if (test__floatuntixf(a: 0x0007FB72E4000001LL, expected: 0x1.FEDCB90000004p+50))
103 return 1;
104 if (test__floatuntixf(a: 0x0007FB72E4000000LL, expected: 0x1.FEDCB9p+50))
105 return 1;
106
107 if (test__floatuntixf(a: 0x023479FD0E092DC0LL, expected: 0x1.1A3CFE870496Ep+57))
108 return 1;
109 if (test__floatuntixf(a: 0x023479FD0E092DA1LL, expected: 0x1.1A3CFE870496D08p+57L))
110 return 1;
111 if (test__floatuntixf(a: 0x023479FD0E092DB0LL, expected: 0x1.1A3CFE870496D8p+57L))
112 return 1;
113 if (test__floatuntixf(a: 0x023479FD0E092DB8LL, expected: 0x1.1A3CFE870496DCp+57L))
114 return 1;
115 if (test__floatuntixf(a: 0x023479FD0E092DB6LL, expected: 0x1.1A3CFE870496DBp+57L))
116 return 1;
117 if (test__floatuntixf(a: 0x023479FD0E092DBFLL, expected: 0x1.1A3CFE870496DF8p+57L))
118 return 1;
119 if (test__floatuntixf(a: 0x023479FD0E092DC1LL, expected: 0x1.1A3CFE870496E08p+57L))
120 return 1;
121 if (test__floatuntixf(a: 0x023479FD0E092DC7LL, expected: 0x1.1A3CFE870496E38p+57L))
122 return 1;
123 if (test__floatuntixf(a: 0x023479FD0E092DC8LL, expected: 0x1.1A3CFE870496E4p+57L))
124 return 1;
125 if (test__floatuntixf(a: 0x023479FD0E092DCFLL, expected: 0x1.1A3CFE870496E78p+57L))
126 return 1;
127 if (test__floatuntixf(a: 0x023479FD0E092DD0LL, expected: 0x1.1A3CFE870496E8p+57L))
128 return 1;
129 if (test__floatuntixf(a: 0x023479FD0E092DD1LL, expected: 0x1.1A3CFE870496E88p+57L))
130 return 1;
131 if (test__floatuntixf(a: 0x023479FD0E092DD8LL, expected: 0x1.1A3CFE870496ECp+57L))
132 return 1;
133 if (test__floatuntixf(a: 0x023479FD0E092DDFLL, expected: 0x1.1A3CFE870496EF8p+57L))
134 return 1;
135 if (test__floatuntixf(a: 0x023479FD0E092DE0LL, expected: 0x1.1A3CFE870496Fp+57))
136 return 1;
137
138 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DC0LL, l: 0), expected: 0x1.1A3CFE870496Ep+121L))
139 return 1;
140 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DA1LL, l: 1), expected: 0x1.1A3CFE870496D08p+121L))
141 return 1;
142 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DB0LL, l: 2), expected: 0x1.1A3CFE870496D8p+121L))
143 return 1;
144 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DB8LL, l: 3), expected: 0x1.1A3CFE870496DCp+121L))
145 return 1;
146 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DB6LL, l: 4), expected: 0x1.1A3CFE870496DBp+121L))
147 return 1;
148 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DBFLL, l: 5), expected: 0x1.1A3CFE870496DF8p+121L))
149 return 1;
150 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DC1LL, l: 6), expected: 0x1.1A3CFE870496E08p+121L))
151 return 1;
152 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DC7LL, l: 7), expected: 0x1.1A3CFE870496E38p+121L))
153 return 1;
154 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DC8LL, l: 8), expected: 0x1.1A3CFE870496E4p+121L))
155 return 1;
156 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DCFLL, l: 9), expected: 0x1.1A3CFE870496E78p+121L))
157 return 1;
158 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DD0LL, l: 0), expected: 0x1.1A3CFE870496E8p+121L))
159 return 1;
160 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DD1LL, l: 11), expected: 0x1.1A3CFE870496E88p+121L))
161 return 1;
162 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DD8LL, l: 12), expected: 0x1.1A3CFE870496ECp+121L))
163 return 1;
164 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DDFLL, l: 13), expected: 0x1.1A3CFE870496EF8p+121L))
165 return 1;
166 if (test__floatuntixf(a: make_ti(h: 0x023479FD0E092DE0LL, l: 14), expected: 0x1.1A3CFE870496Fp+121L))
167 return 1;
168
169 if (test__floatuntixf(a: make_ti(h: 0, l: 0xFFFFFFFFFFFFFFFFLL), expected: 0x1.FFFFFFFFFFFFFFFEp+63L))
170 return 1;
171
172 if (test__floatuntixf(a: make_ti(h: 0xFFFFFFFFFFFFFFFFLL, l: 0x0000000000000000LL),
173 expected: 0x1.FFFFFFFFFFFFFFFEp+127L))
174 return 1;
175 if (test__floatuntixf(a: make_ti(h: 0xFFFFFFFFFFFFFFFFLL, l: 0xFFFFFFFFFFFFFFFFLL),
176 expected: 0x1.0000000000000000p+128L))
177 return 1;
178
179 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x3456100000000001LL),
180 expected: 0x1.2345678901234562p+108L))
181 return 1;
182 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x3456200000000000LL),
183 expected: 0x1.2345678901234562p+108L))
184 return 1;
185 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x34562FFFFFFFFFFFLL),
186 expected: 0x1.2345678901234562p+108L))
187 return 1;
188 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x3456300000000000LL),
189 expected: 0x1.2345678901234564p+108L))
190 return 1;
191 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x3456400000000000LL),
192 expected: 0x1.2345678901234564p+108L))
193 return 1;
194 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x34564FFFFFFFFFFFLL),
195 expected: 0x1.2345678901234564p+108L))
196 return 1;
197 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x3456500000000000LL),
198 expected: 0x1.2345678901234564p+108L))
199 return 1;
200 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x3456500000000001LL),
201 expected: 0x1.2345678901234566p+108L))
202 return 1;
203 if (test__floatuntixf(a: make_ti(h: 0x0000123456789012LL, l: 0x34566FFFFFFFFFFFLL),
204 expected: 0x1.2345678901234566p+108L))
205 return 1;
206#else
207 printf("skipped\n");
208#endif
209 return 0;
210}
211

source code of compiler-rt/test/builtins/Unit/floatuntixf_test.c