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
23si_int __ctzti2(ti_int a);
24
25int 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
38char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
39
40#endif
41
42int 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