projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| 2c00a5a8 | 1 | // RUN: %clang_builtins %s %librt -o %t && %run %t |
| 1a4d82fc JJ |
2 | //===-- ffsdi2_test.c - Test __ffsdi2 -------------------------------------===// |
| 3 | // | |
| 4 | // The LLVM Compiler Infrastructure | |
| 5 | // | |
| 6 | // This file is dual licensed under the MIT and the University of Illinois Open | |
| 7 | // Source Licenses. See LICENSE.TXT for details. | |
| 8 | // | |
| 9 | //===----------------------------------------------------------------------===// | |
| 10 | // | |
| 11 | // This file tests __ffsdi2 for the compiler_rt library. | |
| 12 | // | |
| 13 | //===----------------------------------------------------------------------===// | |
| 14 | ||
| 15 | #include "int_lib.h" | |
| 16 | #include <stdio.h> | |
| 17 | ||
| 18 | // Returns: the index of the least significant 1-bit in a, or | |
| 19 | // the value zero if a is zero. The least significant bit is index one. | |
| 20 | ||
| 92a42be0 | 21 | COMPILER_RT_ABI si_int __ffsdi2(di_int a); |
| 1a4d82fc JJ |
22 | |
| 23 | int test__ffsdi2(di_int a, si_int expected) | |
| 24 | { | |
| 25 | si_int x = __ffsdi2(a); | |
| 26 | if (x != expected) | |
| 27 | printf("error in __ffsdi2(0x%llX) = %d, expected %d\n", a, x, expected); | |
| 28 | return x != expected; | |
| 29 | } | |
| 30 | ||
| 31 | char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; | |
| 32 | ||
| 33 | int main() | |
| 34 | { | |
| 35 | if (test__ffsdi2(0x00000000, 0)) | |
| 36 | return 1; | |
| 37 | if (test__ffsdi2(0x00000001, 1)) | |
| 38 | return 1; | |
| 39 | if (test__ffsdi2(0x00000002, 2)) | |
| 40 | return 1; | |
| 41 | if (test__ffsdi2(0x00000003, 1)) | |
| 42 | return 1; | |
| 43 | if (test__ffsdi2(0x00000004, 3)) | |
| 44 | return 1; | |
| 45 | if (test__ffsdi2(0x00000005, 1)) | |
| 46 | return 1; | |
| 47 | if (test__ffsdi2(0x0000000A, 2)) | |
| 48 | return 1; | |
| 49 | if (test__ffsdi2(0x10000000, 29)) | |
| 50 | return 1; | |
| 51 | if (test__ffsdi2(0x20000000, 30)) | |
| 52 | return 1; | |
| 53 | if (test__ffsdi2(0x60000000, 30)) | |
| 54 | return 1; | |
| 55 | if (test__ffsdi2(0x80000000uLL, 32)) | |
| 56 | return 1; | |
| 57 | if (test__ffsdi2(0x0000050000000000uLL, 41)) | |
| 58 | return 1; | |
| 59 | if (test__ffsdi2(0x0200080000000000uLL, 44)) | |
| 60 | return 1; | |
| 61 | if (test__ffsdi2(0x7200000000000000uLL, 58)) | |
| 62 | return 1; | |
| 63 | if (test__ffsdi2(0x8000000000000000uLL, 64)) | |
| 64 | return 1; | |
| 65 | ||
| 66 | return 0; | |
| 67 | } |