mirror of https://github.com/BOINC/boinc.git
24 lines
580 B
PHP
24 lines
580 B
PHP
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<?php
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define("CREDIT_HALF_LIFE", 86400*7);
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// update a credit average.
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// this must match the function in lib/util.C
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function update_average($now, $work_start_time, $work, &$avg, &$avg_time) {
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if ($avg_time) {
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$diff = $now - $avg_time;
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if ($diff <=0) $diff = 3600;
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$diff_days = $diff/86400;
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$weight = exp(-$diff*M_LN2/CREDIT_HALF_LIFE);
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$avg *= $weight;
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$avg += (1-$weight)*($work/$diff_days);
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} else if ($work) {
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$dd = ($now - $work_start_time)/86400;
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$avg = $work/$dd;
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}
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$avg_time = $now;
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}
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?>
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