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gerrit-public.fairphone.software / platform / external / compiler-rt / 7482815716cd9b87931d82dca7298fc3c707229f / . / test / Unit / fixxfti_test.c
blob: 11296b0368715857ecb8f3531c835fe3c845c9fe [file] [log] [blame]
Daniel Dunbarb3a69012009-06-26 16:47:03 +0000[diff] [blame]1//===-- fixxfti_test.c - Test __fixxfti -----------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
Howard Hinnant9ad441f2010-11-16 22:13:33 +0000[diff] [blame]5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
Daniel Dunbarb3a69012009-06-26 16:47:03 +0000[diff] [blame]7//
8//===----------------------------------------------------------------------===//
9//
10// This file tests __fixxfti for the compiler_rt library.
11//
12//===----------------------------------------------------------------------===//
13
14#if __x86_64
15
16#include "int_lib.h"
17#include <stdio.h>
18
19// Returns: convert a to a signed long long, rounding toward zero.
20
21// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
22// su_int is a 32 bit integral type
23// value in long double is representable in ti_int (no range checking performed)
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
28ti_int __fixxfti(long double a);
29
30int test__fixxfti(long double a, ti_int expected)
31{
32 ti_int x = __fixxfti(a);
33 if (x != expected)
34 {
35 utwords xt;
36 xt.all = x;
37 utwords expectedt;
38 expectedt.all = expected;
39 printf("error in __fixxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
Daniel Dunbarcff52482009-10-27 17:49:07 +0000[diff] [blame]40 a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
Daniel Dunbarb3a69012009-06-26 16:47:03 +0000[diff] [blame]41 }
42 return x != expected;
43}
44
45char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
46char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
47char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
48
49#endif
50
51int main()
52{
53#if __x86_64
54 if (test__fixxfti(0.0, 0))
55 return 1;
56
57 if (test__fixxfti(0.5, 0))
58 return 1;
59 if (test__fixxfti(0.99, 0))
60 return 1;
61 if (test__fixxfti(1.0, 1))
62 return 1;
63 if (test__fixxfti(1.5, 1))
64 return 1;
65 if (test__fixxfti(1.99, 1))
66 return 1;
67 if (test__fixxfti(2.0, 2))
68 return 1;
69 if (test__fixxfti(2.01, 2))
70 return 1;
71 if (test__fixxfti(-0.5, 0))
72 return 1;
73 if (test__fixxfti(-0.99, 0))
74 return 1;
75 if (test__fixxfti(-1.0, -1))
76 return 1;
77 if (test__fixxfti(-1.5, -1))
78 return 1;
79 if (test__fixxfti(-1.99, -1))
80 return 1;
81 if (test__fixxfti(-2.0, -2))
82 return 1;
83 if (test__fixxfti(-2.01, -2))
84 return 1;
85
86 if (test__fixxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
87 return 1;
88 if (test__fixxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
89 return 1;
90
91 if (test__fixxfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
92 0x8000008000000000LL)))
93 return 1;
94 if (test__fixxfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
95 0x8000010000000000LL)))
96 return 1;
97
98 if (test__fixxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
99 return 1;
100 if (test__fixxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
101 return 1;
102
103 if (test__fixxfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
104 0x8000000000000400LL)))
105 return 1;
106 if (test__fixxfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
107 0x8000000000000800LL)))
108 return 1;
109
110 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
111 return 1;
112 if (test__fixxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
113 return 1;
114
115 if (test__fixxfti(-0x1.0000000000000000p+63L, make_ti(0xFFFFFFFFFFFFFFFFLL,
116 0x8000000000000000LL)))
117 return 1;
118 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,
119 0x8000000000000001LL)))
120 return 1;
121 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,
122 0x8000000000000002LL)))
123 return 1;
124
125 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,
126 0x8000000000000000LL)))
127 return 1;
128 if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,
129 0x0000000000000000LL)))
130
131 return 1;
132
133 if (test__fixxfti(-0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL,
134 0x0000000000000000LL)))
135 return 1;
136 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x8000000000000000LL,
137 0x8000000000000000LL)))
138 return 1;
139 if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x8000000000000001LL,
140 0x0000000000000000LL)))
141 return 1;
Joerg Sonnenberger74828152011-05-29 21:43:29 +0000[diff] [blame^]142#else
143 printf("skipped\n");
Daniel Dunbarb3a69012009-06-26 16:47:03 +0000[diff] [blame]144#endif
145 return 0;
146}