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