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//===-- parityti2_test.c - Test __parityti2 -------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tests __parityti2 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#if __x86_64
#include "int_lib.h"
#include <stdio.h>
#include <stdlib.h>
// Returns: 1 if number of bits is odd else returns 0
si_int __parityti2(ti_int a);
int naive_parity(ti_int a)
{
int r = 0;
for (; a; a = a & (a - 1))
r = ~r;
return r & 1;
}
int test__parityti2(ti_int a)
{
si_int x = __parityti2(a);
si_int expected = naive_parity(a);
if (x != expected)
{
twords at;
at.all = a;
printf("error in __parityti2(0x%.16llX%.16llX) = %d, expected %d\n",
at.s.high, at.s.low, x, expected);
}
return x != expected;
}
char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
#endif
int main()
{
#if __x86_64
int i;
for (i = 0; i < 10000; ++i)
if (test__parityti2(((ti_int)rand() << 96) + ((ti_int)rand() << 64) +
((ti_int)rand() << 32) + rand()))
return 1;
#endif
return 0;
}
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