124 lines
No EOL
2.6 KiB
PHP
124 lines
No EOL
2.6 KiB
PHP
<?php
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class Math_Bcmath
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{
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public function setPrecision($precision)
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{
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bcscale($precision);
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}
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public function add($a, $b)
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{
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return bcadd($a, $b);
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}
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public function mul($a, $b)
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{
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return bcmul($a, $b);
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}
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public function sub($a, $b)
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{
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return bcsub($a, $b);
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}
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public function div($a, $b)
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{
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return bcdiv($a, $b);
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}
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public function mod($a, $b)
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{
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return bcmod($a, $b);
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}
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public function pow($a, $b)
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{
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return bcpow($a, $b);
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}
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public function comp($a, $b)
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{
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return bccomp($a, $b);
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}
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public function ceil($x)
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{
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$integer = bcmul($x, 1, 0);
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$decimals = bcsub($x, $integer);
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if (bccomp($decimals, 0) > 0) {
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return bcadd($integer, 1);
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} else {
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return $integer;
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}
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}
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public function floor($x)
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{
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$integer = bcmul($x, 1, 0);
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$decimals = bcsub($x, $integer);
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if (bccomp($decimals, 0) < 0) {
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return bcsub($integer, 1);
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} else {
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return $integer;
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}
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}
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public function round($x, $range = 0)
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{
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$integer = bcmul($x, 1, 0);
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$decimals = bcsub($x, $integer, $range);
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if (bccomp($decimals, 0) > 0) {
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return bcadd($integer, '0.' . str_pad('5', $range, STR_PAD_LEFT), $range);
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} else {
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return bcsub($integer, '0.' . str_pad('5', $range, STR_PAD_LEFT), $range);
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}
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}
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public function render($a)
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{
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if (!$a) {
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return '0';
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}
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$pos = strrpos(strval($a), '.');
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$a = substr(strval($a), 0, $pos);
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$length = $pos + ((3 - ($pos % 3)) % 3);
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$a = str_pad($a, $length, ' ', STR_PAD_LEFT);
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$parts = str_split($a, 3);
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switch ((int) (count($parts) / 3)) {
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case 0:
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case 1:
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return implode('.', $parts);
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break;
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case 2:
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return implode('.', array_slice($parts, 0, 2)) . 'M';
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break;
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case 3:
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return implode('.', array_slice($parts, 0, 2)) . 'G';
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break;
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case 4:
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return implode('.', array_slice($parts, 0, 2)) . 'T';
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break;
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case 5:
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return implode('.', array_slice($parts, 0, 2)) . 'P';
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break;
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case 6:
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return implode('.', array_slice($parts, 0, 2)) . 'Y';
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break;
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default:
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return implode('.', array_slice($parts, 0, sizeof($parts) - 18)) . 'Z';
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break;
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}
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}
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} |