42 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_paritydi23 4#include "int_lib.h"5#include <stdio.h>6#include <stdlib.h>7 8// Returns: 1 if number of bits is odd else returns 09 10COMPILER_RT_ABI int __paritydi2(di_int a);11 12int naive_parity(di_int a)13{14 int r = 0;15 for (; a; a = a & (a - 1))16 r = ~r;17 return r & 1;18}19 20int test__paritydi2(di_int a)21{22 si_int x = __paritydi2(a);23 si_int expected = naive_parity(a);24 if (x != expected)25 printf("error in __paritydi2(0x%llX) = %d, expected %d\n",26 a, x, expected);27 return x != expected;28}29 30char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};31char assumption_2[sizeof(si_int)*CHAR_BIT == 32] = {0};32 33int main()34{35 int i;36 for (i = 0; i < 10000; ++i)37 if (test__paritydi2(((di_int)rand() << 32) + rand()))38 return 1;39 40 return 0;41}42