[Summary view]

Differences Between: [Versions 400 and 401]

   1  <?php
   2  
   3  namespace PhpOffice\PhpSpreadsheet\Calculation\MathTrig;
   4  
   5  use PhpOffice\PhpSpreadsheet\Calculation\Exception;
   6  use PhpOffice\PhpSpreadsheet\Calculation\Functions;
   7  use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;
   8  
   9  class Gcd
  10  {
  11      /**
  12       * Recursively determine GCD.
  13       *
  14       * Returns the greatest common divisor of a series of numbers.
  15       * The greatest common divisor is the largest integer that divides both
  16       *        number1 and number2 without a remainder.
  17       *
  18       * Excel Function:
  19       *        GCD(number1[,number2[, ...]])
  20       *
  21       * @param float|int $a
  22       * @param float|int $b
  23       *
  24       * @return float|int
  25       */
  26      private static function evaluateGCD($a, $b)
  27      {
  28          return $b ? self::evaluateGCD($b, $a % $b) : $a;
  29      }
  30  
  31      /**
  32       * GCD.
  33       *
  34       * Returns the greatest common divisor of a series of numbers.
  35       * The greatest common divisor is the largest integer that divides both
  36       *        number1 and number2 without a remainder.
  37       *
  38       * Excel Function:
  39       *        GCD(number1[,number2[, ...]])
  40       *
  41       * @param mixed ...$args Data values
  42       *
  43       * @return float|int|string Greatest Common Divisor, or a string containing an error
  44       */
  45      public static function evaluate(...$args)
  46      {
  47          try {
  48              $arrayArgs = [];
  49              foreach (Functions::flattenArray($args) as $value1) {
  50                  if ($value1 !== null) {
  51                      $value = Helpers::validateNumericNullSubstitution($value1, 1);
  52                      Helpers::validateNotNegative($value);
  53                      $arrayArgs[] = (int) $value;
  54                  }
  55              }
  56          } catch (Exception $e) {
  57              return $e->getMessage();
  58          }
  59  
  60          if (count($arrayArgs) <= 0) {
  61              return ExcelError::VALUE();
  62          }
  63          $gcd = (int) array_pop($arrayArgs);
  64          do {
  65              $gcd = self::evaluateGCD($gcd, (int) array_pop($arrayArgs));
  66          } while (!empty($arrayArgs));
  67  
  68          return $gcd;
  69      }
  70  }