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gerrit-public.fairphone.software / toolchain / llvm-project / ac24bb53bb5424b7bb4db4414f988a27182cd70c / . / compiler-rt / test / builtins / Unit / fixunsxfti_test.c
blob: 256ba0cf452e732305bd3f40b0683f40c4749c13 [file] [log] [blame]
Weiming Zhao9b7bbec2017-03-21 05:32:51 +0000[diff] [blame]1// RUN: %clang_builtins %s %librt -o %t && %run %t
Sterling Augustine3eaab962017-08-03 18:56:54 +0000[diff] [blame]2// REQUIRES: x86-target-arch
Simon Dardis19a4d972017-05-04 13:34:17 +0000[diff] [blame]3
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]4//===-- fixunsxfti_test.c - Test __fixunsxfti -----------------------------===//
5//
6// The LLVM Compiler Infrastructure
7//
Howard Hinnant5b791f62010-11-16 22:13:33 +0000[diff] [blame]8// This file is dual licensed under the MIT and the University of Illinois Open
9// Source Licenses. See LICENSE.TXT for details.
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]10//
11//===----------------------------------------------------------------------===//
12//
13// This file tests __fixunsxfti for the compiler_rt library.
14//
15//===----------------------------------------------------------------------===//
16
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]17#include "int_lib.h"
18#include <stdio.h>
19
Joerg Sonnenberger14743122014-03-18 21:35:30 +0000[diff] [blame]20#ifdef CRT_HAS_128BIT
21
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]22// Returns: convert a to a unsigned long long, rounding toward zero.
23// Negative values all become zero.
24
25// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
26// tu_int is a 64 bit integral type
27// value in long double is representable in tu_int or is negative
28// (no range checking performed)
29
30// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
31// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
32
Derek Schuffeb0ebc32015-04-24 15:45:57 +0000[diff] [blame]33COMPILER_RT_ABI tu_int __fixunsxfti(long double a);
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]34
35int test__fixunsxfti(long double a, tu_int expected)
36{
37 tu_int x = __fixunsxfti(a);
38 if (x != expected)
39 {
40 utwords xt;
41 xt.all = x;
42 utwords expectedt;
43 expectedt.all = expected;
44 printf("error in __fixunsxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
Daniel Dunbar64857202009-10-27 17:49:07 +0000[diff] [blame]45 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]46 }
47 return x != expected;
48}
49
50char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
51char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
52char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
53
54#endif
55
56int main()
57{
Joerg Sonnenberger14743122014-03-18 21:35:30 +0000[diff] [blame]58#ifdef CRT_HAS_128BIT
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]59 if (test__fixunsxfti(0.0, 0))
60 return 1;
61
62 if (test__fixunsxfti(0.5, 0))
63 return 1;
64 if (test__fixunsxfti(0.99, 0))
65 return 1;
66 if (test__fixunsxfti(1.0, 1))
67 return 1;
68 if (test__fixunsxfti(1.5, 1))
69 return 1;
70 if (test__fixunsxfti(1.99, 1))
71 return 1;
72 if (test__fixunsxfti(2.0, 2))
73 return 1;
74 if (test__fixunsxfti(2.01, 2))
75 return 1;
76 if (test__fixunsxfti(-0.5, 0))
77 return 1;
78 if (test__fixunsxfti(-0.99, 0))
79 return 1;
80 if (test__fixunsxfti(-1.0, 0))
81 return 1;
82 if (test__fixunsxfti(-1.5, 0))
83 return 1;
84 if (test__fixunsxfti(-1.99, 0))
85 return 1;
86 if (test__fixunsxfti(-2.0, 0))
87 return 1;
88 if (test__fixunsxfti(-2.01, 0))
89 return 1;
90
91 if (test__fixunsxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
92 return 1;
93 if (test__fixunsxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
94 return 1;
95
96 if (test__fixunsxfti(-0x1.FFFFFEp+62, 0))
97 return 1;
98 if (test__fixunsxfti(-0x1.FFFFFCp+62, 0))
99 return 1;
100
101 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
102 return 1;
103 if (test__fixunsxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
104 return 1;
105
106 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFp+62, 0))
107 return 1;
108 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFEp+62, 0))
109 return 1;
110
111 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
112 return 1;
113 if (test__fixunsxfti(0x1.0000000000000002p+63L, 0x8000000000000001LL))
114 return 1;
115 if (test__fixunsxfti(0x1.0000000000000000p+63L, 0x8000000000000000LL))
116 return 1;
117 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
118 return 1;
119 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
120 return 1;
121
122 if (test__fixunsxfti(-0x1.0000000000000000p+63L, 0))
123 return 1;
124 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
125 return 1;
126 if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
127 return 1;
128
129 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+127L, make_ti(0xFFFFFFFFFFFFFFFFLL, 0)))
130 return 1;
131 if (test__fixunsxfti(0x1.0000000000000002p+127L, make_ti(0x8000000000000001LL, 0)))
132 return 1;
133 if (test__fixunsxfti(0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL, 0)))
134 return 1;
135 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, 0)))
136 return 1;
137 if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+126L, make_ti(0x7FFFFFFFFFFFFFFELL, 0)))
138 return 1;
139
Joerg Sonnenbergerd9bcddd2011-05-29 21:43:29 +0000[diff] [blame]140#else
141 printf("skipped\n");
Daniel Dunbarfd089992009-06-26 16:47:03 +0000[diff] [blame]142#endif
143 return 0;
144}