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1 //===-- ctzti2_test.c - Test __ctzti2 -------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file tests __ctzti2 for the compiler_rt library.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "int_lib.h"
15 #include <stdio.h>
16 
17 #ifdef CRT_HAS_128BIT
18 
19 // Returns: the number of trailing 0-bits
20 
21 // Precondition: a != 0
22 
23 COMPILER_RT_ABI si_int __ctzti2(ti_int a);
24 
test__ctzti2(ti_int a,si_int expected)25 int test__ctzti2(ti_int a, si_int expected)
26 {
27     si_int x = __ctzti2(a);
28     if (x != expected)
29     {
30         twords at;
31         at.all = a;
32         printf("error in __ctzti2(0x%llX%.16llX) = %d, expected %d\n",
33                at.s.high, at.s.low, x, expected);
34     }
35     return x != expected;
36 }
37 
38 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
39 
40 #endif
41 
main()42 int main()
43 {
44 #ifdef CRT_HAS_128BIT
45     if (test__ctzti2(0x00000001, 0))
46         return 1;
47     if (test__ctzti2(0x00000002, 1))
48         return 1;
49     if (test__ctzti2(0x00000003, 0))
50         return 1;
51     if (test__ctzti2(0x00000004, 2))
52         return 1;
53     if (test__ctzti2(0x00000005, 0))
54         return 1;
55     if (test__ctzti2(0x0000000A, 1))
56         return 1;
57     if (test__ctzti2(0x10000000, 28))
58         return 1;
59     if (test__ctzti2(0x20000000, 29))
60         return 1;
61     if (test__ctzti2(0x60000000, 29))
62         return 1;
63     if (test__ctzti2(0x80000000uLL, 31))
64         return 1;
65     if (test__ctzti2(0x0000050000000000uLL, 40))
66         return 1;
67     if (test__ctzti2(0x0200080000000000uLL, 43))
68         return 1;
69     if (test__ctzti2(0x7200000000000000uLL, 57))
70         return 1;
71     if (test__ctzti2(0x8000000000000000uLL, 63))
72         return 1;
73     if (test__ctzti2(make_ti(0x00000000A0000000LL, 0x0000000000000000LL), 93))
74         return 1;
75     if (test__ctzti2(make_ti(0xF000000000000000LL, 0x0000000000000000LL), 124))
76         return 1;
77     if (test__ctzti2(make_ti(0x8000000000000000LL, 0x0000000000000000LL), 127))
78         return 1;
79 #else
80     printf("skipped\n");
81 #endif
82 
83    return 0;
84 }
85