1 // RUN: %clang_builtins %s %librt -o %t && %run %t 2 // REQUIRES: librt_has_parityti2 3 // REQUIRES: int128 4 5 #include "int_lib.h" 6 #include <stdio.h> 7 #include <stdlib.h> 8 9 #ifdef CRT_HAS_128BIT 10 11 // Returns: 1 if number of bits is odd else returns 0 12 13 COMPILER_RT_ABI int __parityti2(ti_int a); 14 naive_parity(ti_int a)15int naive_parity(ti_int a) 16 { 17 int r = 0; 18 for (; a; a = a & (a - 1)) 19 r = ~r; 20 return r & 1; 21 } 22 test__parityti2(ti_int a)23int test__parityti2(ti_int a) 24 { 25 si_int x = __parityti2(a); 26 si_int expected = naive_parity(a); 27 if (x != expected) 28 { 29 twords at; 30 at.all = a; 31 printf("error in __parityti2(0x%.16llX%.16llX) = %d, expected %d\n", 32 at.s.high, at.s.low, x, expected); 33 } 34 return x != expected; 35 } 36 37 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; 38 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0}; 39 40 #endif 41 main()42int main() 43 { 44 #ifdef CRT_HAS_128BIT 45 int i; 46 for (i = 0; i < 10000; ++i) 47 if (test__parityti2(((ti_int)rand() << 96) + ((ti_int)rand() << 64) + 48 ((ti_int)rand() << 32) + rand())) 49 return 1; 50 51 #else 52 printf("skipped\n"); 53 #endif 54 return 0; 55 } 56