1218822Sdim//===-- ctzdi2_test.c - Test __ctzdi2 -------------------------------------===// 238889Sjdp// 3218822Sdim// The LLVM Compiler Infrastructure 4218822Sdim// 5218822Sdim// This file is dual licensed under the MIT and the University of Illinois Open 6218822Sdim// Source Licenses. See LICENSE.TXT for details. 7218822Sdim// 838889Sjdp//===----------------------------------------------------------------------===// 9218822Sdim// 10218822Sdim// This file tests __ctzdi2 for the compiler_rt library. 11218822Sdim// 12218822Sdim//===----------------------------------------------------------------------===// 1338889Sjdp 14218822Sdim#include "int_lib.h" 15218822Sdim#include <stdio.h> 16218822Sdim 17218822Sdim// Returns: the number of trailing 0-bits 18218822Sdim 1938889Sjdp// Precondition: a != 0 20218822Sdim 21218822SdimCOMPILER_RT_ABI si_int __ctzdi2(di_int a); 22218822Sdim 23218822Sdimint test__ctzdi2(di_int a, si_int expected) 24218822Sdim{ 25218822Sdim si_int x = __ctzdi2(a); 26218822Sdim if (x != expected) 27218822Sdim printf("error in __ctzdi2(0x%llX) = %d, expected %d\n", a, x, expected); 28218822Sdim return x != expected; 29218822Sdim} 30218822Sdim 31218822Sdimchar assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0}; 32218822Sdim 33218822Sdimint main() 34218822Sdim{ 35218822Sdim// if (test__ctzdi2(0x00000000, N)) // undefined 36218822Sdim// return 1; 37218822Sdim if (test__ctzdi2(0x00000001, 0)) 38218822Sdim return 1; 39218822Sdim if (test__ctzdi2(0x00000002, 1)) 40218822Sdim return 1; 41218822Sdim if (test__ctzdi2(0x00000003, 0)) 42218822Sdim return 1; 43218822Sdim if (test__ctzdi2(0x00000004, 2)) 44218822Sdim return 1; 45218822Sdim if (test__ctzdi2(0x00000005, 0)) 46218822Sdim return 1; 47218822Sdim if (test__ctzdi2(0x0000000A, 1)) 48218822Sdim return 1; 49218822Sdim if (test__ctzdi2(0x10000000, 28)) 50218822Sdim return 1; 51218822Sdim if (test__ctzdi2(0x20000000, 29)) 52218822Sdim return 1; 53218822Sdim if (test__ctzdi2(0x60000000, 29)) 54218822Sdim return 1; 55218822Sdim if (test__ctzdi2(0x80000000uLL, 31)) 56218822Sdim return 1; 57218822Sdim if (test__ctzdi2(0x0000050000000000uLL, 40)) 58218822Sdim return 1; 59218822Sdim if (test__ctzdi2(0x0200080000000000uLL, 43)) 60218822Sdim return 1; 61218822Sdim if (test__ctzdi2(0x7200000000000000uLL, 57)) 62218822Sdim return 1; 63218822Sdim if (test__ctzdi2(0x8000000000000000uLL, 63)) 64218822Sdim return 1; 65218822Sdim 66218822Sdim return 0; 67218822Sdim} 68218822Sdim