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gerrit-public.fairphone.software / toolchain / llvm-project / ac24bb53bb5424b7bb4db4414f988a27182cd70c / . / compiler-rt / test / builtins / Unit / floatundixf_test.c
blob: 47b431697d1566df952a86dc844dd735189d03ae [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//===-- floatundixf_test.c - Test __floatundixf ---------------------------===//
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 __floatundixf 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
19#if HAS_80_BIT_LONG_DOUBLE
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]20// Returns: convert a to a long double, rounding toward even.
21
22// Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
23// du_int is a 64 bit integral type
24
25// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
26// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
27
Derek Schuffeb0ebc32015-04-24 15:45:57 +0000[diff] [blame]28COMPILER_RT_ABI long double __floatundixf(du_int a);
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]29
30int test__floatundixf(du_int a, long double expected)
31{
32 long double x = __floatundixf(a);
33 if (x != expected)
34 printf("error in __floatundixf(%llX) = %LA, expected %LA\n",
35 a, x, expected);
36 return x != expected;
37}
38
39char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
40char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
41char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]42#endif
43
44int main()
45{
Nick Kledzik7e718652009-09-11 19:09:36 +0000[diff] [blame]46#if HAS_80_BIT_LONG_DOUBLE
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]47 if (test__floatundixf(0, 0.0))
48 return 1;
49
50 if (test__floatundixf(1, 1.0))
51 return 1;
52 if (test__floatundixf(2, 2.0))
53 return 1;
54 if (test__floatundixf(20, 20.0))
55 return 1;
56
57 if (test__floatundixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
58 return 1;
59 if (test__floatundixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
60 return 1;
61 if (test__floatundixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
62 return 1;
63 if (test__floatundixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
64 return 1;
65 if (test__floatundixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
66 return 1;
67 if (test__floatundixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
68 return 1;
69 if (test__floatundixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
70 return 1;
71
72 if (test__floatundixf(0x8000008000000000ULL, 0x8.000008p+60))
73 return 1;
74 if (test__floatundixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
75 return 1;
76 if (test__floatundixf(0x8000010000000000ULL, 0x8.00001p+60))
77 return 1;
78 if (test__floatundixf(0x8000000000001000ULL, 0x8.000000000001p+60))
79 return 1;
80
81 if (test__floatundixf(0x8000000000000000ULL, 0x8p+60))
82 return 1;
83 if (test__floatundixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
84 return 1;
85
86 if (test__floatundixf(0x0007FB72E8000000ULL, 0x1.FEDCBAp+50))
87 return 1;
88
89 if (test__floatundixf(0x0007FB72EA000000ULL, 0x1.FEDCBA8p+50))
90 return 1;
91 if (test__floatundixf(0x0007FB72EB000000ULL, 0x1.FEDCBACp+50))
92 return 1;
93 if (test__floatundixf(0x0007FB72EBFFFFFFULL, 0x1.FEDCBAFFFFFFCp+50))
94 return 1;
95 if (test__floatundixf(0x0007FB72EC000000ULL, 0x1.FEDCBBp+50))
96 return 1;
97 if (test__floatundixf(0x0007FB72E8000001ULL, 0x1.FEDCBA0000004p+50))
98 return 1;
99
100 if (test__floatundixf(0x0007FB72E6000000ULL, 0x1.FEDCB98p+50))
101 return 1;
102 if (test__floatundixf(0x0007FB72E7000000ULL, 0x1.FEDCB9Cp+50))
103 return 1;
104 if (test__floatundixf(0x0007FB72E7FFFFFFULL, 0x1.FEDCB9FFFFFFCp+50))
105 return 1;
106 if (test__floatundixf(0x0007FB72E4000001ULL, 0x1.FEDCB90000004p+50))
107 return 1;
108 if (test__floatundixf(0x0007FB72E4000000ULL, 0x1.FEDCB9p+50))
109 return 1;
110
111 if (test__floatundixf(0x023479FD0E092DC0ULL, 0x1.1A3CFE870496Ep+57))
112 return 1;
113 if (test__floatundixf(0x023479FD0E092DA1ULL, 0x8.D1E7F43824B684p+54L))
114 return 1;
115 if (test__floatundixf(0x023479FD0E092DB0ULL, 0x8.D1E7f43824B6Cp+54L))
116 return 1;
117 if (test__floatundixf(0x023479FD0E092DB8ULL, 0x8.D1E7F43824B6Ep+54L))
118 return 1;
119 if (test__floatundixf(0x023479FD0E092DB6ULL, 0x8.D1E7F43824B6D8p+54L))
120 return 1;
121 if (test__floatundixf(0x023479FD0E092DBFULL, 0x8.D1E7F43824B6FCp+54L))
122 return 1;
123 if (test__floatundixf(0x023479FD0E092DC1ULL, 0x8.D1E7F43824B704p+54L))
124 return 1;
125 if (test__floatundixf(0x023479FD0E092DC7ULL, 0x8.D1E7F43824B71Cp+54L))
126 return 1;
127 if (test__floatundixf(0x023479FD0E092DC8ULL, 0x8.D1E7F43824B72p+54L))
128 return 1;
129 if (test__floatundixf(0x023479FD0E092DCFULL, 0x8.D1E7F43824B73Cp+54L))
130 return 1;
131 if (test__floatundixf(0x023479FD0E092DD0ULL, 0x8.D1E7F43824B74p+54L))
132 return 1;
133 if (test__floatundixf(0x023479FD0E092DD1ULL, 0x8.D1E7F43824B744p+54L))
134 return 1;
135 if (test__floatundixf(0x023479FD0E092DD8ULL, 0x8.D1E7F43824B76p+54L))
136 return 1;
137 if (test__floatundixf(0x023479FD0E092DDFULL, 0x8.D1E7F43824B77Cp+54L))
138 return 1;
139 if (test__floatundixf(0x023479FD0E092DE0ULL, 0x1.1A3CFE870496Fp+57))
140 return 1;
141
Joerg Sonnenbergerd9bcddd2011-05-29 21:43:29 +0000[diff] [blame]142#else
143 printf("skipped\n");
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]144#endif
145 return 0;
146}