1*b9829059Sjoerg //===-- ctzdi2_test.c - Test __ctzdi2 -------------------------------------===//
2*b9829059Sjoerg //
3*b9829059Sjoerg // The LLVM Compiler Infrastructure
4*b9829059Sjoerg //
5*b9829059Sjoerg // This file is dual licensed under the MIT and the University of Illinois Open
6*b9829059Sjoerg // Source Licenses. See LICENSE.TXT for details.
7*b9829059Sjoerg //
8*b9829059Sjoerg //===----------------------------------------------------------------------===//
9*b9829059Sjoerg //
10*b9829059Sjoerg // This file tests __ctzdi2 for the compiler_rt library.
11*b9829059Sjoerg //
12*b9829059Sjoerg //===----------------------------------------------------------------------===//
13*b9829059Sjoerg
14*b9829059Sjoerg #include "int_lib.h"
15*b9829059Sjoerg #include <stdio.h>
16*b9829059Sjoerg
17*b9829059Sjoerg // Returns: the number of trailing 0-bits
18*b9829059Sjoerg
19*b9829059Sjoerg // Precondition: a != 0
20*b9829059Sjoerg
21*b9829059Sjoerg si_int __ctzdi2(di_int a);
22*b9829059Sjoerg
test__ctzdi2(di_int a,si_int expected)23*b9829059Sjoerg int test__ctzdi2(di_int a, si_int expected)
24*b9829059Sjoerg {
25*b9829059Sjoerg si_int x = __ctzdi2(a);
26*b9829059Sjoerg if (x != expected)
27*b9829059Sjoerg printf("error in __ctzdi2(0x%llX) = %d, expected %d\n", a, x, expected);
28*b9829059Sjoerg return x != expected;
29*b9829059Sjoerg }
30*b9829059Sjoerg
31*b9829059Sjoerg char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
32*b9829059Sjoerg
main()33*b9829059Sjoerg int main()
34*b9829059Sjoerg {
35*b9829059Sjoerg // if (test__ctzdi2(0x00000000, N)) // undefined
36*b9829059Sjoerg // return 1;
37*b9829059Sjoerg if (test__ctzdi2(0x00000001, 0))
38*b9829059Sjoerg return 1;
39*b9829059Sjoerg if (test__ctzdi2(0x00000002, 1))
40*b9829059Sjoerg return 1;
41*b9829059Sjoerg if (test__ctzdi2(0x00000003, 0))
42*b9829059Sjoerg return 1;
43*b9829059Sjoerg if (test__ctzdi2(0x00000004, 2))
44*b9829059Sjoerg return 1;
45*b9829059Sjoerg if (test__ctzdi2(0x00000005, 0))
46*b9829059Sjoerg return 1;
47*b9829059Sjoerg if (test__ctzdi2(0x0000000A, 1))
48*b9829059Sjoerg return 1;
49*b9829059Sjoerg if (test__ctzdi2(0x10000000, 28))
50*b9829059Sjoerg return 1;
51*b9829059Sjoerg if (test__ctzdi2(0x20000000, 29))
52*b9829059Sjoerg return 1;
53*b9829059Sjoerg if (test__ctzdi2(0x60000000, 29))
54*b9829059Sjoerg return 1;
55*b9829059Sjoerg if (test__ctzdi2(0x80000000uLL, 31))
56*b9829059Sjoerg return 1;
57*b9829059Sjoerg if (test__ctzdi2(0x0000050000000000uLL, 40))
58*b9829059Sjoerg return 1;
59*b9829059Sjoerg if (test__ctzdi2(0x0200080000000000uLL, 43))
60*b9829059Sjoerg return 1;
61*b9829059Sjoerg if (test__ctzdi2(0x7200000000000000uLL, 57))
62*b9829059Sjoerg return 1;
63*b9829059Sjoerg if (test__ctzdi2(0x8000000000000000uLL, 63))
64*b9829059Sjoerg return 1;
65*b9829059Sjoerg
66*b9829059Sjoerg return 0;
67*b9829059Sjoerg }
68