1//===-- ctzdi2_test.c - Test __ctzdi2 -------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file tests __ctzdi2 for the compiler_rt library.
11//
12//===----------------------------------------------------------------------===//
13
14#include "int_lib.h"
15#include <stdio.h>
16
17// Returns: the number of trailing 0-bits
18
19// Precondition: a != 0
20
21si_int __ctzdi2(di_int a);
22
23int test__ctzdi2(di_int a, si_int expected)
24{
25    si_int x = __ctzdi2(a);
26    if (x != expected)
27        printf("error in __ctzdi2(0x%llX) = %d, expected %d\n", a, x, expected);
28    return x != expected;
29}
30
31char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
32
33int main()
34{
35//    if (test__ctzdi2(0x00000000, N))  // undefined
36//        return 1;
37    if (test__ctzdi2(0x00000001, 0))
38        return 1;
39    if (test__ctzdi2(0x00000002, 1))
40        return 1;
41    if (test__ctzdi2(0x00000003, 0))
42        return 1;
43    if (test__ctzdi2(0x00000004, 2))
44        return 1;
45    if (test__ctzdi2(0x00000005, 0))
46        return 1;
47    if (test__ctzdi2(0x0000000A, 1))
48        return 1;
49    if (test__ctzdi2(0x10000000, 28))
50        return 1;
51    if (test__ctzdi2(0x20000000, 29))
52        return 1;
53    if (test__ctzdi2(0x60000000, 29))
54        return 1;
55    if (test__ctzdi2(0x80000000uLL, 31))
56        return 1;
57    if (test__ctzdi2(0x0000050000000000uLL, 40))
58        return 1;
59    if (test__ctzdi2(0x0200080000000000uLL, 43))
60        return 1;
61    if (test__ctzdi2(0x7200000000000000uLL, 57))
62        return 1;
63    if (test__ctzdi2(0x8000000000000000uLL, 63))
64        return 1;
65
66   return 0;
67}
68