1 //===-- ctzdi2_test.c - Test __ctzdi2 -------------------------------------===// 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 __ctzdi2 for the compiler_rt library. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "int_lib.h" 15 #include <stdio.h> 16 17 // Returns: the number of trailing 0-bits 18 19 // Precondition: a != 0 20 21 si_int __ctzdi2(di_int a); 22 23 int test__ctzdi2(di_int a, si_int expected) 24 { 25 si_int x = __ctzdi2(a); 26 if (x != expected) 27 printf("error in __ctzdi2(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__ctzdi2(0x00000000, N)) // undefined 36 // return 1; 37 if (test__ctzdi2(0x00000001, 0)) 38 return 1; 39 if (test__ctzdi2(0x00000002, 1)) 40 return 1; 41 if (test__ctzdi2(0x00000003, 0)) 42 return 1; 43 if (test__ctzdi2(0x00000004, 2)) 44 return 1; 45 if (test__ctzdi2(0x00000005, 0)) 46 return 1; 47 if (test__ctzdi2(0x0000000A, 1)) 48 return 1; 49 if (test__ctzdi2(0x10000000, 28)) 50 return 1; 51 if (test__ctzdi2(0x20000000, 29)) 52 return 1; 53 if (test__ctzdi2(0x60000000, 29)) 54 return 1; 55 if (test__ctzdi2(0x80000000uLL, 31)) 56 return 1; 57 if (test__ctzdi2(0x0000050000000000uLL, 40)) 58 return 1; 59 if (test__ctzdi2(0x0200080000000000uLL, 43)) 60 return 1; 61 if (test__ctzdi2(0x7200000000000000uLL, 57)) 62 return 1; 63 if (test__ctzdi2(0x8000000000000000uLL, 63)) 64 return 1; 65 66 return 0; 67 } 68
