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gerrit-public.fairphone.software / toolchain / llvm-project / ac24bb53bb5424b7bb4db4414f988a27182cd70c / . / compiler-rt / test / builtins / Unit / floatdixf_test.c
blob: 0a4ca3a574b9bbaf8a4f59d84788dbe641c92fe2 [file] [log] [blame]
Weiming Zhao9b7bbec2017-03-21 05:32:51 +0000[diff] [blame]1// RUN: %clang_builtins %s %librt -o %t && %run %t
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]2//===-- floatdixf_test.c - Test __floatdixf -------------------------------===//
3//
4// The LLVM Compiler Infrastructure
5//
Howard Hinnant5b791f62010-11-16 22:13:33 +0000[diff] [blame]6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]8//
9//===----------------------------------------------------------------------===//
10//
11// This file tests __floatdixf for the compiler_rt library.
12//
13//===----------------------------------------------------------------------===//
14
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]15#include "int_lib.h"
16#include <stdio.h>
17
Nick Kledzik7e718652009-09-11 19:09:36 +0000[diff] [blame]18#if HAS_80_BIT_LONG_DOUBLE
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]19// Returns: convert a to a long double, rounding toward even.
20
21// Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
22// di_int is a 64 bit integral type
23
24// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
25// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
26
Derek Schuffeb0ebc32015-04-24 15:45:57 +0000[diff] [blame]27long COMPILER_RT_ABI double __floatdixf(di_int a);
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]28
29int test__floatdixf(di_int a, long double expected)
30{
31 long double x = __floatdixf(a);
32 if (x != expected)
33 printf("error in __floatdixf(%llX) = %LA, expected %LA\n",
34 a, x, expected);
35 return x != expected;
36}
37
38char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
39char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
40char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]41#endif
42
43int main()
44{
Nick Kledzik7e718652009-09-11 19:09:36 +0000[diff] [blame]45#if HAS_80_BIT_LONG_DOUBLE
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]46 if (test__floatdixf(0, 0.0))
47 return 1;
48
49 if (test__floatdixf(1, 1.0))
50 return 1;
51 if (test__floatdixf(2, 2.0))
52 return 1;
53 if (test__floatdixf(20, 20.0))
54 return 1;
55 if (test__floatdixf(-1, -1.0))
56 return 1;
57 if (test__floatdixf(-2, -2.0))
58 return 1;
59 if (test__floatdixf(-20, -20.0))
60 return 1;
61
62 if (test__floatdixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
63 return 1;
64 if (test__floatdixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
65 return 1;
66 if (test__floatdixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
67 return 1;
68 if (test__floatdixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
69 return 1;
70
71 if (test__floatdixf(0x8000008000000000LL, -0x1.FFFFFEp+62))
72 return 1;
73 if (test__floatdixf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
74 return 1;
75 if (test__floatdixf(0x8000010000000000LL, -0x1.FFFFFCp+62))
76 return 1;
77 if (test__floatdixf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
78 return 1;
79
80 if (test__floatdixf(0x8000000000000000LL, -0x1.000000p+63))
81 return 1;
82 if (test__floatdixf(0x8000000000000001LL, -0x1.FFFFFFFFFFFFFFFCp+62L))
83 return 1;
84
85 if (test__floatdixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
86 return 1;
87
88 if (test__floatdixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
89 return 1;
90 if (test__floatdixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
91 return 1;
92 if (test__floatdixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
93 return 1;
94 if (test__floatdixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
95 return 1;
96 if (test__floatdixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
97 return 1;
98
99 if (test__floatdixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
100 return 1;
101 if (test__floatdixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
102 return 1;
103 if (test__floatdixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
104 return 1;
105 if (test__floatdixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
106 return 1;
107 if (test__floatdixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
108 return 1;
109
110 if (test__floatdixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
111 return 1;
112 if (test__floatdixf(0x023479FD0E092DA1LL, 0x8.D1E7F43824B684p+54L))
113 return 1;
114 if (test__floatdixf(0x023479FD0E092DB0LL, 0x8.D1E7f43824B6Cp+54L))
115 return 1;
116 if (test__floatdixf(0x023479FD0E092DB8LL, 0x8.D1E7F43824B6Ep+54L))
117 return 1;
118 if (test__floatdixf(0x023479FD0E092DB6LL, 0x8.D1E7F43824B6D8p+54L))
119 return 1;
120 if (test__floatdixf(0x023479FD0E092DBFLL, 0x8.D1E7F43824B6FCp+54L))
121 return 1;
122 if (test__floatdixf(0x023479FD0E092DC1LL, 0x8.D1E7F43824B704p+54L))
123 return 1;
124 if (test__floatdixf(0x023479FD0E092DC7LL, 0x8.D1E7F43824B71Cp+54L))
125 return 1;
126 if (test__floatdixf(0x023479FD0E092DC8LL, 0x8.D1E7F43824B72p+54L))
127 return 1;
128 if (test__floatdixf(0x023479FD0E092DCFLL, 0x8.D1E7F43824B73Cp+54L))
129 return 1;
130 if (test__floatdixf(0x023479FD0E092DD0LL, 0x8.D1E7F43824B74p+54L))
131 return 1;
132 if (test__floatdixf(0x023479FD0E092DD1LL, 0x8.D1E7F43824B744p+54L))
133 return 1;
134 if (test__floatdixf(0x023479FD0E092DD8LL, 0x8.D1E7F43824B76p+54L))
135 return 1;
136 if (test__floatdixf(0x023479FD0E092DDFLL, 0x8.D1E7F43824B77Cp+54L))
137 return 1;
138 if (test__floatdixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
139 return 1;
140
Joerg Sonnenbergerd9bcddd2011-05-29 21:43:29 +0000[diff] [blame]141#else
142 printf("skipped\n");
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]143#endif
144 return 0;
145}