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#include <usual/bits.h>
#include "test_common.h"
/*
* is_power_of_2
*/
static void test_pow2(void *p)
{
int_check(is_power_of_2(0), 0);
int_check(is_power_of_2(1), 1);
int_check(is_power_of_2(2), 1);
int_check(is_power_of_2(3), 0);
end:;
}
/*
* rol
*/
static void test_rol(void *p)
{
/* rol16 */
int_check(rol16(1, 1), 2);
int_check(rol16(1, 15), 32768);
int_check(rol16(0x8000, 1), 1);
/* rol32 */
int_check(rol32(1, 1), 2);
int_check(rol32(0x80000000, 1), 1);
/* rol64 */
ull_check(rol64(1, 1), 2);
ull_check(rol64(1, 63), 0x8000000000000000ULL);
end:;
}
/*
* ror
*/
static void test_ror(void *p)
{
/* ror16 */
int_check(ror16(1, 1), 0x8000);
/* ror32 */
int_check(ror32(1, 1), 0x80000000);
/* ror64 */
ull_check(ror64(1, 1), 0x8000000000000000ULL);
end:;
}
/*
* fls
*/
static void test_fls(void *p)
{
/* fls */
int_check(fls(0), 0);
int_check(fls(1), 1);
int_check(fls(3), 2);
int_check(fls((int)-1), 32);
/* flsl */
int_check(flsl(0), 0);
int_check(flsl(1), 1);
int_check(flsl(3), 2);
if (sizeof(long) == 4)
int_check(flsl((long)-1), 32);
else
int_check(flsl((long)-1), 64);
/* flsll */
int_check(flsll(0), 0);
int_check(flsll(1), 1);
int_check(flsll(3), 2);
int_check(flsll((long long)-1), 64);
end:;
}
/*
* ffs
*/
static void test_ffs(void *p)
{
/* ffs */
int_check(ffs(0), 0);
int_check(ffs(1), 1);
int_check(ffs(3), 1);
int_check(ffs((int)-1), 1);
int_check(ffs(ror32(1,1)), 32);
/* flsl */
int_check(ffsl(0), 0);
int_check(ffsl(1), 1);
int_check(ffsl(3), 1);
int_check(ffsl((long)-1), 1);
if (sizeof(long) == 4)
int_check(ffsl(ror32(1,1)), 32);
else
int_check(ffsl(ror64(1,1)), 64);
/* ffsll */
int_check(ffsll(0), 0);
int_check(ffsll(1), 1);
int_check(ffsll(3), 1);
int_check(ffsll((long long)-1), 1);
ull_check((1ULL << 63), ror64(1,1));
int_check(ffsll(1ULL << 63), 64);
int_check(ffsll(ror64(1,1)), 64);
end:;
}
/*
* Describe
*/
struct testcase_t bits_tests[] = {
{ "is_power_of_2", test_pow2 },
{ "rol", test_rol },
{ "ror", test_ror },
{ "ffs", test_ffs },
{ "fls", test_fls },
END_OF_TESTCASES
};
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