Created Credit calculation script (markdown)

Credit-calculation-script.md

@@ -0,0 +1,64 @@
+```php
+#!/usr/bin/php
+<?php
+
+
+function getReward($block) {
+ if ($block == 0) {
+   return 400000000;
+ }
+ elseif ($block <= 5100) {
+   return 1;
+ }
+ elseif ($block <= 55000) {
+   return 1 + floor(($block - 5001) / 100);
+ }
+ else {
+   return max(0, 500 - floor(((sqrt(($block - 55001) / 4 + 1)) - 1) / 2));
+ }
+}
+
+
+function getTotalReward($fromBlock, $toBlock) {
+ if ($toBlock < $fromBlock) return 0;
+ return array_sum(array_map('getReward', range($fromBlock,$toBlock)));
+}
+
+
+
+
+$blockTime = 161.58;
+$start = 1466646588;
+$now = gmdate('U');
+
+$blocksNow = floor(($now - $start) / $blockTime);
+
+$arg = isset($_SERVER['argv'][1]) ? $_SERVER['argv'][1] : 'now';
+
+if (preg_match('/^\d+b$/', $arg)) {
+ $blocksAtTarget = (int)substr($arg,0,-1);
+ $target = $start + $blocksAtTarget*$blockTime;
+}
+else {
+ $target = gmdate('U', strtotime($arg));
+ $blocksAtTarget = floor(($target - $start) / $blockTime);
+}
+
+echo "Start: $start (" . date('Y-m-d H:i:s', $start) . ")\n";
+echo "Now: $now (" . date('Y-m-d H:i:s', $now) . ")\n";
+echo "Target: $target (" . date('Y-m-d H:i:s', $target) . ")\n";
+
+echo "\n";
+
+echo "Blocks now (assuming {$blockTime} seconds per block): " . number_format($blocksNow) . "\n";
+echo "Credits now (assuming {$blockTime} seconds per block): " . number_format(getTotalReward(1,$blocksNow)) . "\n";
+
+echo "\n";
+
+echo "Blocks at target: " . number_format($blocksAtTarget) . "\n";
+echo "Credits from now to target: " . ($blocksNow>=$blocksAtTarget ? 0 : number_format(getTotalReward($blocksNow,$blocksAtTarget))) . "\n";
+echo "Credits at target: " . number_format(getTotalReward(1,$blocksAtTarget)) . "\n";
+echo "Reward of target block: " . number_format(getReward($blocksAtTarget)) . "\n";
+
+?>
+```