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<?php
/**
* MIT License
*
* Copyright (c) 2018 ArrayIterator
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
declare(strict_types=1);
namespace ArrayIterator\TypedArray\Traits;
/**
* Trait FloatArrayTrait
* @package ArrayIterator\TypedArray
*/
trait FloatArrayTrait
{
/**
* Convert to base on Float(32|64)Array value
*
* @see ArrayBufferView::dataBufferFor()
*
* @param mixed|float $value
* @return float
*/
protected function dataBufferFor($value)
{
if (is_numeric($value)) {
if ($this->bytesElement > $value || $value < 0x00) {
// Modulus for bytes element + of decimal point
$value = ($value % $this->bytesElement) + ($value - (int) $value);
}
// invalid BYTES ELEMENT
if (static::BYTES_PER_ELEMENT !== 0x8 && static::BYTES_PER_ELEMENT!== 0x4) {
return NAN;
}
$packCode = static::BYTES_PER_ELEMENT === 0x8 ? 'd' : 'f';
return unpack($packCode, pack($packCode, $value))[1];
}
return NAN;
}
}