Passed
Push — master ( 9938cf...e83f7b )
by Arkadiusz
05:59
created

BinaryStep::differentiate()   A

Complexity

Conditions 3
Paths 2

Duplication

Lines 0
Ratio 0 %

Size

Total Lines 8
Code Lines 4

Importance

Changes 0
Metric Value
dl 0
loc 8
rs 9.4285
c 0
b 0
f 0
cc 3
eloc 4
nc 2
nop 2
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<?php
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declare(strict_types=1);
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namespace Phpml\NeuralNetwork\ActivationFunction;
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use Phpml\NeuralNetwork\ActivationFunction;
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class BinaryStep implements ActivationFunction
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{
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    /**
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     * @param float|int $value
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     */
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    public function compute($value): float
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    {
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        return $value >= 0 ? 1.0 : 0.0;
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    }
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    /**
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     * @param float|int $value
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     * @param float|int $computedvalue
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     */
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    public function differentiate($value, $computedvalue): float
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    {
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        if ($value === 0 || $value === 0.0) {
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            return 1;
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        }
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        return 0;
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    }
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}
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