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c838b2a071
2002-11-26 Sebastian Wilhelmi <wilhelmi@ira.uka.de> * glib/grand.c, gthread/gthread-impl.c, tests/rand-test.c: Improved the seeding algorithm. Old behaviour can be achived by setting envvar G_RANDOM_VERSION to "2.0". (#99262) * docs/reference/glib/glib-docs.sgml, docs/reference/glib/Makefile.am: Renamed docs/reference/glib/changes-2.0.sgml to docs/reference/glib/changes.sgml and added section for changes from 2.0 to 2.2 (Also corrected 1.0 to 1.2). * README.in, docs/reference/glib/running.sgml, docs/reference/glib/tmpl/random_numbers.sgml, docs/reference/glib/changes.sgml: Added notes about the new seeding algorithm.
78 lines
1.3 KiB
C
78 lines
1.3 KiB
C
#undef G_DISABLE_ASSERT
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#undef G_LOG_DOMAIN
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#include <glib.h>
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const gint32 first_numbers[] =
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{
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0x7a7a7a7a,
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0xfdcc2d54,
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0x3a279ceb,
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0xc4d39c33,
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0xf31895cd,
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0x46ca0afc,
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0x3f5484ff,
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0x54bc9557,
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0xed2c24b1,
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0x84062503,
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0x8f6404b3,
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0x599a94b3,
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0xe46d03d5,
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0x310beb78,
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0x7bee5d08,
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0x760d09be,
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0x59b6e163,
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0xbf6d16ec,
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0xcca5fb54,
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0x5de7259b,
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0x1696330c,
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};
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const gint length = sizeof (first_numbers) / sizeof (first_numbers[0]);
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int main()
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{
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guint n;
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GRand* rand = g_rand_new_with_seed (first_numbers[0]);
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for (n = 1; n < length; n++)
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g_assert (first_numbers[n] == g_rand_int (rand));
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for (n = 1; n < 100000; n++)
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{
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gint32 i;
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gdouble d;
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gboolean b;
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i = g_rand_int_range (rand, 8,16);
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g_assert (i >= 8 && i < 16);
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i = g_random_int_range (8,16);
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g_assert (i >= 8 && i < 16);
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d = g_rand_double (rand);
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g_assert (d >= 0 && d < 1);
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d = g_random_double ();
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g_assert (d >= 0 && d < 1);
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d = g_rand_double_range (rand, -8, 32);
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g_assert (d >= -8 && d < 32);
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d = g_random_double_range (-8, 32);
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g_assert (d >= -8 && d < 32);
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b = g_random_boolean ();
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g_assert (b == TRUE || b == FALSE);
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b = g_rand_boolean (rand);
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g_assert (b == TRUE || b == FALSE);
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}
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g_rand_free (rand);
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return 0;
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}
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