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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
extern inline void libj2_ji_abs_diff_ju_to_j2u(intmax_t a, uintmax_t b, struct libj2_j2u *res);
#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 r, expected;
uintmax_t a;
intmax_t b;
unsigned i;
srand((unsigned)time(NULL));
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u(0, 0, &r);
EXPECT(libj2_j2u_eq_ju(&r, 0));
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u(0, UINTMAX_MAX, &r);
EXPECT(libj2_j2u_eq_ju(&r, UINTMAX_MAX));
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u(INTMAX_MAX, 0, &r);
EXPECT(libj2_j2u_eq_ji(&r, INTMAX_MAX));
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u(-INTMAX_MAX, 0, &r);
EXPECT(libj2_j2u_eq_ju(&r, INTMAX_MAX));
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u(INTMAX_MAX, UINTMAX_MAX, &r);
EXPECT(libj2_j2u_eq_ju(&r, (uintmax_t)INTMAX_MAX + 1U));
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u(-INTMAX_MAX, UINTMAX_MAX, &r);
libj2_ju_to_j2u(UINTMAX_MAX, &expected);
libj2_j2u_add_ju(&expected, (uintmax_t)INTMAX_MAX);
EXPECT(libj2_j2u_eq_j2u(&r, &expected));
for (i = 0; i < 256U; i++) {
a = random_ju();
b = (intmax_t)(random_ju() >> 1);
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u(-b, a, &r);
libj2_ju_to_j2u(a, &expected);
libj2_j2u_add_ju(&expected, (uintmax_t)b);
EXPECT(libj2_j2u_eq_j2u(&r, &expected));
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u(b, a, &r);
if ((uintmax_t)b < a) {
libj2_ju_to_j2u(a, &expected);
libj2_j2u_sub_ju(&expected, (uintmax_t)b);
} else {
libj2_ju_to_j2u((uintmax_t)b, &expected);
libj2_j2u_sub_ju(&expected, a);
}
EXPECT(libj2_j2u_eq_j2u(&r, &expected));
if (a <= (uintmax_t)INTMAX_MAX) {
r = (struct libj2_j2u){111, 222};
libj2_ji_abs_diff_ju_to_j2u((intmax_t)a, (uintmax_t)b, &r);
EXPECT(libj2_j2u_eq_j2u(&r, &expected));
}
}
return 0;
}
#endif
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