Current File : /home/alliance/domains/sedl.alnetis.fr/public_html/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/MathTrig/SeriesSum.php
<?php
namespace PhpOffice\PhpSpreadsheet\Calculation\MathTrig;
use PhpOffice\PhpSpreadsheet\Calculation\ArrayEnabled;
use PhpOffice\PhpSpreadsheet\Calculation\Exception;
use PhpOffice\PhpSpreadsheet\Calculation\Functions;
class SeriesSum
{
use ArrayEnabled;
/**
* SERIESSUM.
*
* Returns the sum of a power series
*
* @param mixed $x Input value
* @param mixed $n Initial power
* @param mixed $m Step
* @param mixed[] $args An array of coefficients for the Data Series
*
* @return array|float|string The result, or a string containing an error
*/
public static function evaluate($x, $n, $m, ...$args)
{
if (is_array($x) || is_array($n) || is_array($m)) {
return self::evaluateArrayArgumentsSubset([self::class, __FUNCTION__], 3, $x, $n, $m, ...$args);
}
try {
$x = Helpers::validateNumericNullSubstitution($x, 0);
$n = Helpers::validateNumericNullSubstitution($n, 0);
$m = Helpers::validateNumericNullSubstitution($m, 0);
// Loop through arguments
$aArgs = Functions::flattenArray($args);
$returnValue = 0;
$i = 0;
foreach ($aArgs as $argx) {
if ($argx !== null) {
$arg = Helpers::validateNumericNullSubstitution($argx, 0);
$returnValue += $arg * $x ** ($n + ($m * $i));
++$i;
}
}
} catch (Exception $e) {
return $e->getMessage();
}
return $returnValue;
}
}
Mini Shell