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//===-- popcountti2_test.c - Test __popcountti2 ----------------------------===//
//
// 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 __popcountti2 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#if __x86_64
#include "int_lib.h"
#include <stdio.h>
#include <stdlib.h>
// Returns: count of 1 bits
si_int __popcountti2(ti_int a);
int naive_popcount(ti_int a)
{
int r = 0;
for (; a; a = (tu_int)a >> 1)
r += a & 1;
return r;
}
int test__popcountti2(ti_int a)
{
si_int x = __popcountti2(a);
si_int expected = naive_popcount(a);
if (x != expected)
{
twords at;
at.all = a;
printf("error in __popcountti2(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
if (test__popcountti2(0))
return 1;
if (test__popcountti2(1))
return 1;
if (test__popcountti2(2))
return 1;
if (test__popcountti2(0xFFFFFFFFFFFFFFFDLL))
return 1;
if (test__popcountti2(0xFFFFFFFFFFFFFFFELL))
return 1;
if (test__popcountti2(0xFFFFFFFFFFFFFFFFLL))
return 1;
if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFDLL)))
return 1;
if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFELL)))
return 1;
if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
return 1;
int i;
for (i = 0; i < 10000; ++i)
if (test__popcountti2(((ti_int)rand() << 96) | ((ti_int)rand() << 64) |
((ti_int)rand() << 32) | rand()))
return 1;
#endif
return 0;
}
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