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network: Add network_rankmod
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@ -138,6 +138,53 @@ fail:
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return false;
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}
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/* First 64 entries calculated by 1 / pow(n, 0.3) for n >= 1 */
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static const double rankmod_table[] = {
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0.1000000000, 0.8122523964, 0.7192230933, 0.6597539554,
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0.6170338627, 0.5841906811, 0.5577898253, 0.5358867313,
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0.5172818580, 0.5011872336, 0.4870596972, 0.4745102806,
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0.4632516708, 0.4530661223, 0.4437850034, 0.4352752816,
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0.4274303178, 0.4201634287, 0.4134032816, 0.4070905315,
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0.4011753236, 0.3956154062, 0.3903746872, 0.3854221125,
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0.3807307877, 0.3762772797, 0.3720410580, 0.3680040435,
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0.3641502401, 0.3604654325, 0.3569369365, 0.3535533906,
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0.3503045821, 0.3471812999, 0.3441752105, 0.3412787518,
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0.3384850430, 0.3357878061, 0.3331812996, 0.3306602598,
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0.3282198502, 0.3258556179, 0.3235634544, 0.3213395618,
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0.3191804229, 0.3170827751, 0.3150435863, 0.3130600345,
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0.3111294892, 0.3092494947, 0.3074177553, 0.3056321221,
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0.3038905808, 0.3021912409, 0.3005323264, 0.2989121662,
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0.2973291870, 0.2957819051, 0.2942689208, 0.2927889114,
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0.2913406263, 0.2899228820, 0.2885345572, 0.2871745887,
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};
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double network_rankmod(uint32_t type, const char *ssid)
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{
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const struct l_queue_entry *entry;
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int n;
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int nmax;
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for (n = 0, entry = l_queue_get_entries(networks); entry;
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entry = entry->next, n += 1) {
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const struct network_info *info = entry->data;
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if (info->type != type)
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continue;
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if (strcmp(info->ssid, ssid))
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continue;
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nmax = L_ARRAY_SIZE(rankmod_table);
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if (n >= nmax)
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n = nmax - 1;
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return rankmod_table[n];
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}
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return 0.0;
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}
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void network_init()
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{
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networks = l_queue_new();
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@ -24,6 +24,7 @@
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bool network_seen(uint32_t type, const char *ssid);
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bool network_connected(uint32_t type, const char *ssid);
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double network_rankmod(uint32_t type, const char *ssid);
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void network_init();
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void network_exit();
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