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<?php
namespace Chippyash\Math\Matrix\Computation;
use Chippyash\Math\Matrix\NumericMatrix;
use Chippyash\Math\Matrix\Traits\CreateCorrectMatrixType;
use Chippyash\Matrix\Traits\AssertParameterIsMatrix;
use Chippyash\Matrix\Traits\AssertMatrixColumnsAreEqual;
use Chippyash\Matrix\Traits\AssertMatrixRowsAreEqual;
use Chippyash\Math\Matrix\Special\Zeros as ZMatrix;
use Chippyash\Type\Interfaces\NumericTypeInterface;
use Chippyash\Type\TypeFactory;
use Chippyash\Math\Type\Calculator;
abstract class AbstractEntryWiseComputation extends AbstractComputation
{
use AssertParameterIsMatrix;
use AssertMatrixRowsAreEqual;
use AssertMatrixColumnsAreEqual;
use CreateCorrectMatrixType;
public function compute(NumericMatrix $mA, $extra = null)
{
$this->assertParameterIsMatrix($extra, 'Parameter is not a matrix');
if ($mA->is('empty') || $extra->is('empty')) {
return $this->createCorrectMatrixType($mA, []);
}
$this->assertMatrixColumnsAreEqual($mA, $extra)
->assertMatrixRowsAreEqual($mA, $extra);
$data = (new ZMatrix())->create([$mA->rows(), $mA->columns()])->toArray();
$dA = $mA->toArray();
$dB = $extra->toArray();
$cols = $mA->columns();
$rows = $mA->rows();
$calc = new Calculator();
for ($row=0; $row<$rows; $row++) {
for ($col=0; $col<$cols; $col++) {
$data[$row][$col] = $this->doCompute($dA[$row][$col], $dB[$row][$col], $calc);
}
}
return $this->createCorrectMatrixType($mA, $data);
}
abstract protected function doCompute(NumericTypeInterface $a, NumericTypeInterface $b, Calculator $calc);
}