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Added independent symmetry check

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This commit is contained in:
Dennis Eichhorn 2018-05-31 17:38:36 +02:00
parent 31209d2b30
commit e611105b60
1 changed files with 8 additions and 1 deletions
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9
Math/Matrix/Matrix.php
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@ -278,7 +278,14 @@ class Matrix implements \ArrayAccess, \Iterator
*/ */
public function isSymmetric() : bool public function isSymmetric() : bool
{ {
return (new EigenvalueDecomposition($this))->isSymmetric(); $isSymmetric = true;
for ($j = 0; ($j < $this->m) & $isSymmetric; ++$j) {
for ($i = 0; ($i < $this->n) & $isSymmetric; ++$i) {
$isSymmetric = ($this->matrix[$i][$j] === $this->matrix[$j][$i]);
}
}
return $isSymmetric;
} }
/** /**