1*4684ddb6SLionel Sambuc //===-- ffsdi2_test.c - Test __ffsdi2 -------------------------------------===//
2*4684ddb6SLionel Sambuc //
3*4684ddb6SLionel Sambuc // The LLVM Compiler Infrastructure
4*4684ddb6SLionel Sambuc //
5*4684ddb6SLionel Sambuc // This file is dual licensed under the MIT and the University of Illinois Open
6*4684ddb6SLionel Sambuc // Source Licenses. See LICENSE.TXT for details.
7*4684ddb6SLionel Sambuc //
8*4684ddb6SLionel Sambuc //===----------------------------------------------------------------------===//
9*4684ddb6SLionel Sambuc //
10*4684ddb6SLionel Sambuc // This file tests __ffsdi2 for the compiler_rt library.
11*4684ddb6SLionel Sambuc //
12*4684ddb6SLionel Sambuc //===----------------------------------------------------------------------===//
13*4684ddb6SLionel Sambuc
14*4684ddb6SLionel Sambuc #include "int_lib.h"
15*4684ddb6SLionel Sambuc #include <stdio.h>
16*4684ddb6SLionel Sambuc
17*4684ddb6SLionel Sambuc // Returns: the index of the least significant 1-bit in a, or
18*4684ddb6SLionel Sambuc // the value zero if a is zero. The least significant bit is index one.
19*4684ddb6SLionel Sambuc
20*4684ddb6SLionel Sambuc si_int __ffsdi2(di_int a);
21*4684ddb6SLionel Sambuc
test__ffsdi2(di_int a,si_int expected)22*4684ddb6SLionel Sambuc int test__ffsdi2(di_int a, si_int expected)
23*4684ddb6SLionel Sambuc {
24*4684ddb6SLionel Sambuc si_int x = __ffsdi2(a);
25*4684ddb6SLionel Sambuc if (x != expected)
26*4684ddb6SLionel Sambuc printf("error in __ffsdi2(0x%llX) = %d, expected %d\n", a, x, expected);
27*4684ddb6SLionel Sambuc return x != expected;
28*4684ddb6SLionel Sambuc }
29*4684ddb6SLionel Sambuc
30*4684ddb6SLionel Sambuc char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
31*4684ddb6SLionel Sambuc
main()32*4684ddb6SLionel Sambuc int main()
33*4684ddb6SLionel Sambuc {
34*4684ddb6SLionel Sambuc if (test__ffsdi2(0x00000000, 0))
35*4684ddb6SLionel Sambuc return 1;
36*4684ddb6SLionel Sambuc if (test__ffsdi2(0x00000001, 1))
37*4684ddb6SLionel Sambuc return 1;
38*4684ddb6SLionel Sambuc if (test__ffsdi2(0x00000002, 2))
39*4684ddb6SLionel Sambuc return 1;
40*4684ddb6SLionel Sambuc if (test__ffsdi2(0x00000003, 1))
41*4684ddb6SLionel Sambuc return 1;
42*4684ddb6SLionel Sambuc if (test__ffsdi2(0x00000004, 3))
43*4684ddb6SLionel Sambuc return 1;
44*4684ddb6SLionel Sambuc if (test__ffsdi2(0x00000005, 1))
45*4684ddb6SLionel Sambuc return 1;
46*4684ddb6SLionel Sambuc if (test__ffsdi2(0x0000000A, 2))
47*4684ddb6SLionel Sambuc return 1;
48*4684ddb6SLionel Sambuc if (test__ffsdi2(0x10000000, 29))
49*4684ddb6SLionel Sambuc return 1;
50*4684ddb6SLionel Sambuc if (test__ffsdi2(0x20000000, 30))
51*4684ddb6SLionel Sambuc return 1;
52*4684ddb6SLionel Sambuc if (test__ffsdi2(0x60000000, 30))
53*4684ddb6SLionel Sambuc return 1;
54*4684ddb6SLionel Sambuc if (test__ffsdi2(0x80000000uLL, 32))
55*4684ddb6SLionel Sambuc return 1;
56*4684ddb6SLionel Sambuc if (test__ffsdi2(0x0000050000000000uLL, 41))
57*4684ddb6SLionel Sambuc return 1;
58*4684ddb6SLionel Sambuc if (test__ffsdi2(0x0200080000000000uLL, 44))
59*4684ddb6SLionel Sambuc return 1;
60*4684ddb6SLionel Sambuc if (test__ffsdi2(0x7200000000000000uLL, 58))
61*4684ddb6SLionel Sambuc return 1;
62*4684ddb6SLionel Sambuc if (test__ffsdi2(0x8000000000000000uLL, 64))
63*4684ddb6SLionel Sambuc return 1;
64*4684ddb6SLionel Sambuc
65*4684ddb6SLionel Sambuc return 0;
66*4684ddb6SLionel Sambuc }
67