1// RUN: %clang_builtins %s %librt -o %t && %run %t
2// REQUIRES: x86-target-arch
3
4//===-- floattixf.c - Test __floattixf ------------------------------------===//
5//
6// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
7// See https://llvm.org/LICENSE.txt for license information.
8// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
9//
10//===----------------------------------------------------------------------===//
11//
12// This file tests __floattixf for the compiler_rt library.
13//
14//===----------------------------------------------------------------------===//
15
16#include "int_lib.h"
17#include <float.h>
18#include <stdio.h>
19
20#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
21
22// Returns: convert a to a long double, rounding toward even.
23
24// Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
25//             ti_int is a 128 bit integral type
26
27// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
28// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
29
30COMPILER_RT_ABI long double __floattixf(ti_int a);
31
32int test__floattixf(ti_int a, long double expected)
33{
34    long double x = __floattixf(a);
35    if (x != expected)
36    {
37        twords at;
38        at.all = a;
39        printf("error in __floattixf(0x%.16llX%.16llX) = %LA, expected %LA\n",
40               at.s.high, at.s.low, x, expected);
41    }
42    return x != expected;
43}
44
45COMPILE_TIME_ASSERT(sizeof(ti_int) == 2*sizeof(di_int));
46COMPILE_TIME_ASSERT(sizeof(ti_int)*CHAR_BIT == 128);
47COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128);
48
49#endif
50
51int main()
52{
53#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
54    if (test__floattixf(0, 0.0))
55        return 1;
56
57    if (test__floattixf(1, 1.0))
58        return 1;
59    if (test__floattixf(2, 2.0))
60        return 1;
61    if (test__floattixf(20, 20.0))
62        return 1;
63    if (test__floattixf(-1, -1.0))
64        return 1;
65    if (test__floattixf(-2, -2.0))
66        return 1;
67    if (test__floattixf(-20, -20.0))
68        return 1;
69
70    if (test__floattixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
71        return 1;
72    if (test__floattixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
73        return 1;
74    if (test__floattixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
75        return 1;
76    if (test__floattixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
77        return 1;
78
79    if (test__floattixf(make_ti(0x8000008000000000LL, 0), -0x1.FFFFFEp+126))
80        return 1;
81    if (test__floattixf(make_ti(0x8000000000000800LL, 0), -0x1.FFFFFFFFFFFFEp+126))
82        return 1;
83    if (test__floattixf(make_ti(0x8000010000000000LL, 0), -0x1.FFFFFCp+126))
84        return 1;
85    if (test__floattixf(make_ti(0x8000000000001000LL, 0), -0x1.FFFFFFFFFFFFCp+126))
86        return 1;
87
88    if (test__floattixf(make_ti(0x8000000000000000LL, 0), -0x1.000000p+127))
89        return 1;
90    if (test__floattixf(make_ti(0x8000000000000001LL, 0), -0x1.FFFFFFFFFFFFFFFCp+126L))
91        return 1;
92
93    if (test__floattixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
94        return 1;
95
96    if (test__floattixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
97        return 1;
98    if (test__floattixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
99        return 1;
100    if (test__floattixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
101        return 1;
102    if (test__floattixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
103        return 1;
104    if (test__floattixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
105        return 1;
106
107    if (test__floattixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
108        return 1;
109    if (test__floattixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
110        return 1;
111    if (test__floattixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
112        return 1;
113    if (test__floattixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
114        return 1;
115    if (test__floattixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
116        return 1;
117
118    if (test__floattixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
119        return 1;
120    if (test__floattixf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496D08p+57L))
121        return 1;
122    if (test__floattixf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496D8p+57L))
123        return 1;
124    if (test__floattixf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496DCp+57L))
125        return 1;
126    if (test__floattixf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496DBp+57L))
127        return 1;
128    if (test__floattixf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496DF8p+57L))
129        return 1;
130    if (test__floattixf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496E08p+57L))
131        return 1;
132    if (test__floattixf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496E38p+57L))
133        return 1;
134    if (test__floattixf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496E4p+57L))
135        return 1;
136    if (test__floattixf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496E78p+57L))
137        return 1;
138    if (test__floattixf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496E8p+57L))
139        return 1;
140    if (test__floattixf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496E88p+57L))
141        return 1;
142    if (test__floattixf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496ECp+57L))
143        return 1;
144    if (test__floattixf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496EF8p+57L))
145        return 1;
146    if (test__floattixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
147        return 1;
148
149    if (test__floattixf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121L))
150        return 1;
151    if (test__floattixf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496D08p+121L))
152        return 1;
153    if (test__floattixf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496D8p+121L))
154        return 1;
155    if (test__floattixf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496DCp+121L))
156        return 1;
157    if (test__floattixf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496DBp+121L))
158        return 1;
159    if (test__floattixf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496DF8p+121L))
160        return 1;
161    if (test__floattixf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496E08p+121L))
162        return 1;
163    if (test__floattixf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496E38p+121L))
164        return 1;
165    if (test__floattixf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496E4p+121L))
166        return 1;
167    if (test__floattixf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496E78p+121L))
168        return 1;
169    if (test__floattixf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496E8p+121L))
170        return 1;
171    if (test__floattixf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496E88p+121L))
172        return 1;
173    if (test__floattixf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496ECp+121L))
174        return 1;
175    if (test__floattixf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496EF8p+121L))
176        return 1;
177    if (test__floattixf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121L))
178        return 1;
179
180    if (test__floattixf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL), 0x1.FFFFFFFFFFFFFFFEp+63L))
181        return 1;
182
183    if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456100000000001LL),
184                        0x1.2345678901234562p+108L))
185        return 1;
186    if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456200000000000LL),
187                        0x1.2345678901234562p+108L))
188        return 1;
189    if (test__floattixf(make_ti(0x0000123456789012LL, 0x34562FFFFFFFFFFFLL),
190                        0x1.2345678901234562p+108L))
191        return 1;
192    if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456300000000000LL),
193                        0x1.2345678901234564p+108L))
194        return 1;
195    if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456400000000000LL),
196                        0x1.2345678901234564p+108L))
197        return 1;
198    if (test__floattixf(make_ti(0x0000123456789012LL, 0x34564FFFFFFFFFFFLL),
199                        0x1.2345678901234564p+108L))
200        return 1;
201    if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456500000000000LL),
202                        0x1.2345678901234564p+108L))
203        return 1;
204    if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456500000000001LL),
205                        0x1.2345678901234566p+108L))
206        return 1;
207    if (test__floattixf(make_ti(0x0000123456789012LL, 0x34566FFFFFFFFFFFLL),
208                        0x1.2345678901234566p+108L))
209        return 1;
210#else
211    printf("skipped\n");
212#endif
213   return 0;
214}
215