<?php
namespace Taschenrechner\Classes\Operationen;
class Cosinus extends Operation {
public function getSign() {
return "cos(";
}
public function calculate($a, $b=NULL) {
return cos(deg2rad($a));
}
public function findAndCalculateTerm($term, $operations) {
//arbeitet intern mit dem Array
$array = preg_split('/(?<!^)(?!$)/u', $term );
$array = $this->concatinator->concatinateArray($array,$operations);
//TODO change numeric to concatinator
//$array = $this->concatinator->concatinateNumericValues($array);
//$array = $this->concatinator->concatinateOperations($array);
for($i =0; $i < sizeof($array)-1; $i++) {
if($array[$i]=="cos(") {
$array[$i] = $this->calculate($array[$i+1]);
unset($array[$i+1]);
unset($array[$i+2]);
$array = array_values($array);
}
}
return implode("", $array);
}
}
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