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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
extern inline unsigned libj2_fls_j2u(const struct libj2_j2u *a);
/* TODO Add man page */
#else
static uintmax_t
random_ju(void)
{
size_t n = LIBJ2_JU_BIT;
uintmax_t r = 0;
while (n--)
if (rand() < rand())
r |= (uintmax_t)1 << n;
return r;
}
int
main(void)
{
struct libj2_j2u a, b, a_saved, b_saved;
unsigned i, j;
srand((unsigned)time(NULL));
libj2_ju_to_j2u(0, &a);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == 0);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
libj2_ju_to_j2u(1, &a);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == 1);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
libj2_ju_to_j2u(2, &a);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == 2);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
libj2_ju_to_j2u(3, &a);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == 2);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
libj2_ju_to_j2u(4, &a);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == 3);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
libj2_ju_to_j2u(5, &a);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == 3);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
libj2_ju_to_j2u(6, &a);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == 3);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
libj2_j2u_max(&a);
EXPECT(libj2_fls_j2u(&a) == LIBJ2_J2U_BIT);
EXPECT(libj2_j2u_is_max(&a));
for (i = 0; i < LIBJ2_J2U_BIT; i++) {
libj2_j2u_zero(&a);
libj2_j2u_or_bit(&a, i);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == i + 1U);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
}
for (i = LIBJ2_JU_BIT; i < LIBJ2_J2U_BIT; i++) {
libj2_j2u_zero(&a);
libj2_j2u_or_bit(&a, i);
a.low = UINTMAX_MAX;
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == i + 1U);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
}
for (i = 0; i < LIBJ2_J2U_BIT; i++) {
libj2_j2u_max(&a);
libj2_j2u_rsh(&a, i);
a_saved = a;
EXPECT(libj2_fls_j2u(&a) == LIBJ2_J2U_BIT - i);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
for (j = 0; j < 32; j++) {
EXPECT(libj2_j2u_test_bit(&a, LIBJ2_J2U_BIT - 1U - i));
b.high = random_ju();
b.low = random_ju();
libj2_j2u_and_j2u(&b, &a);
libj2_j2u_or_bit(&b, LIBJ2_J2U_BIT - 1U - i);
EXPECT(libj2_j2u_eq_j2u(&a, &a_saved));
b_saved = b;
EXPECT(libj2_fls_j2u(&b) == LIBJ2_J2U_BIT - i);
EXPECT(libj2_j2u_eq_j2u(&b, &b_saved));
}
}
return 0;
}
#endif
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