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2c00a5a8 | 1 | // RUN: %clang_builtins %s %librt -o %t && %run %t |
1a4d82fc JJ |
2 | //===-- ffsdi2_test.c - Test __ffsdi2 -------------------------------------===// |
3 | // | |
4 | // The LLVM Compiler Infrastructure | |
5 | // | |
6 | // This file is dual licensed under the MIT and the University of Illinois Open | |
7 | // Source Licenses. See LICENSE.TXT for details. | |
8 | // | |
9 | //===----------------------------------------------------------------------===// | |
10 | // | |
11 | // This file tests __ffsdi2 for the compiler_rt library. | |
12 | // | |
13 | //===----------------------------------------------------------------------===// | |
14 | ||
15 | #include "int_lib.h" | |
16 | #include <stdio.h> | |
17 | ||
18 | // Returns: the index of the least significant 1-bit in a, or | |
19 | // the value zero if a is zero. The least significant bit is index one. | |
20 | ||
92a42be0 | 21 | COMPILER_RT_ABI si_int __ffsdi2(di_int a); |
1a4d82fc JJ |
22 | |
23 | int test__ffsdi2(di_int a, si_int expected) | |
24 | { | |
25 | si_int x = __ffsdi2(a); | |
26 | if (x != expected) | |
27 | printf("error in __ffsdi2(0x%llX) = %d, expected %d\n", a, x, expected); | |
28 | return x != expected; | |
29 | } | |
30 | ||
31 | char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; | |
32 | ||
33 | int main() | |
34 | { | |
35 | if (test__ffsdi2(0x00000000, 0)) | |
36 | return 1; | |
37 | if (test__ffsdi2(0x00000001, 1)) | |
38 | return 1; | |
39 | if (test__ffsdi2(0x00000002, 2)) | |
40 | return 1; | |
41 | if (test__ffsdi2(0x00000003, 1)) | |
42 | return 1; | |
43 | if (test__ffsdi2(0x00000004, 3)) | |
44 | return 1; | |
45 | if (test__ffsdi2(0x00000005, 1)) | |
46 | return 1; | |
47 | if (test__ffsdi2(0x0000000A, 2)) | |
48 | return 1; | |
49 | if (test__ffsdi2(0x10000000, 29)) | |
50 | return 1; | |
51 | if (test__ffsdi2(0x20000000, 30)) | |
52 | return 1; | |
53 | if (test__ffsdi2(0x60000000, 30)) | |
54 | return 1; | |
55 | if (test__ffsdi2(0x80000000uLL, 32)) | |
56 | return 1; | |
57 | if (test__ffsdi2(0x0000050000000000uLL, 41)) | |
58 | return 1; | |
59 | if (test__ffsdi2(0x0200080000000000uLL, 44)) | |
60 | return 1; | |
61 | if (test__ffsdi2(0x7200000000000000uLL, 58)) | |
62 | return 1; | |
63 | if (test__ffsdi2(0x8000000000000000uLL, 64)) | |
64 | return 1; | |
65 | ||
66 | return 0; | |
67 | } |