vendor/phpoffice/phpexcel/Classes/PHPExcel/Shared/JAMA/utils/Maths.php

   1 <?php
   2 /**
   3  *      @package JAMA
   4  *
   5  *      Pythagorean Theorem:
   6  *
   7  *      a = 3
   8  *      b = 4
   9  *      r = sqrt(square(a) + square(b))
  10  *      r = 5
  11  *
  12  *      r = sqrt(a^2 + b^2) without under/overflow.
  13  */
  14 function hypo($a, $b) {
  15         if (abs($a) > abs($b)) {
  16                 $r = $b / $a;
  17                 $r = abs($a) * sqrt(1 + $r * $r);
  18         } elseif ($b != 0) {
  19                 $r = $a / $b;
  20                 $r = abs($b) * sqrt(1 + $r * $r);
  21         } else {
  22                 $r = 0.0;
  23         }
  24         return $r;
  25 }       //      function hypo()
  26
  27
  28 /**
  29  *      Mike Bommarito's version.
  30  *      Compute n-dimensional hyotheneuse.
  31  *
  32 function hypot() {
  33         $s = 0;
  34         foreach (func_get_args() as $d) {
  35                 if (is_numeric($d)) {
  36                         $s += pow($d, 2);
  37                 } else {
  38                         throw new PHPExcel_Calculation_Exception(JAMAError(ArgumentTypeException));
  39                 }
  40         }
  41         return sqrt($s);
  42 }
  43 */