glib/tests/rand-test.c

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#include <glib.h>
const gint32 first_numbers[] =
{
0x7a7a7a7a,
0x20aea82a,
0xcab337ab,
0xdcf770ea,
0xdf552b2f,
0x32d1ef7f,
0x6bed6dd9,
0x7222df44,
0x6b842128,
0x07f8579a,
0x9dad1004,
0x2df264f2,
0x13b48989,
0xf2929475,
0x30f30c97,
0x3f9a1ea7,
0x3bf04710,
0xb85bd69e,
0x790a48b0,
0xfa06b85f,
0xa64cc9e3
};
const gint length = sizeof (first_numbers) / sizeof (first_numbers[0]);
int main()
{
guint n;
GRand* rand = g_rand_new_with_seed (first_numbers[0]);
for (n = 1; n < length; n++)
g_assert (first_numbers[n] == g_rand_int (rand));
for (n = 1; n < 100000; n++)
{
gint32 i;
gdouble d;
gboolean b;
i = g_rand_int_range (rand, 8,16);
g_assert (i >= 8 && i < 16);
i = g_random_int_range (8,16);
g_assert (i >= 8 && i < 16);
d = g_rand_double (rand);
g_assert (d >= 0 && d < 1);
d = g_random_double ();
g_assert (d >= 0 && d < 1);
d = g_rand_double_range (rand, -8, 32);
g_assert (d >= -8 && d < 32);
d = g_random_double_range (-8, 32);
g_assert (d >= -8 && d < 32);
b = g_random_boolean ();
g_assert (b == TRUE || b == FALSE);
b = g_rand_boolean (rand);
g_assert (b == TRUE || b == FALSE);
}
g_rand_free (rand);
return 0;
}