1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
//===-- ffsti2_test.c - Test __ffsti2 -------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tests __ffsti2 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
#ifdef CRT_HAS_128BIT
// Returns: the index of the least significant 1-bit in a, or
// the value zero if a is zero. The least significant bit is index one.
si_int __ffsti2(ti_int a);
int test__ffsti2(ti_int a, si_int expected)
{
si_int x = __ffsti2(a);
if (x != expected)
{
twords at;
at.all = a;
printf("error in __ffsti2(0x%llX%.16llX) = %d, expected %d\n",
at.s.high, at.s.low, x, expected);
}
return x != expected;
}
char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
#endif
int main()
{
#ifdef CRT_HAS_128BIT
if (test__ffsti2(0x00000000, 0))
return 1;
if (test__ffsti2(0x00000001, 1))
return 1;
if (test__ffsti2(0x00000002, 2))
return 1;
if (test__ffsti2(0x00000003, 1))
return 1;
if (test__ffsti2(0x00000004, 3))
return 1;
if (test__ffsti2(0x00000005, 1))
return 1;
if (test__ffsti2(0x0000000A, 2))
return 1;
if (test__ffsti2(0x10000000, 29))
return 1;
if (test__ffsti2(0x20000000, 30))
return 1;
if (test__ffsti2(0x60000000, 30))
return 1;
if (test__ffsti2(0x80000000uLL, 32))
return 1;
if (test__ffsti2(0x0000050000000000uLL, 41))
return 1;
if (test__ffsti2(0x0200080000000000uLL, 44))
return 1;
if (test__ffsti2(0x7200000000000000uLL, 58))
return 1;
if (test__ffsti2(0x8000000000000000uLL, 64))
return 1;
if (test__ffsti2(make_ti(0x8000000800000000uLL, 0), 100))
return 1;
if (test__ffsti2(make_ti(0x8000000000000000uLL, 0), 128))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
|
