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Math.tar
BrickMathCalculator.php 0000644 00000010745 15107543063 0011146 0 ustar 00 <?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Math; use Brick\Math\BigDecimal; use Brick\Math\BigInteger; use Brick\Math\Exception\MathException; use Brick\Math\RoundingMode as BrickMathRounding; use Ramsey\Uuid\Exception\InvalidArgumentException; use Ramsey\Uuid\Type\Decimal; use Ramsey\Uuid\Type\Hexadecimal; use Ramsey\Uuid\Type\Integer as IntegerObject; use Ramsey\Uuid\Type\NumberInterface; /** * A calculator using the brick/math library for arbitrary-precision arithmetic * * @psalm-immutable */ final class BrickMathCalculator implements CalculatorInterface { private const ROUNDING_MODE_MAP = [ RoundingMode::UNNECESSARY => BrickMathRounding::UNNECESSARY, RoundingMode::UP => BrickMathRounding::UP, RoundingMode::DOWN => BrickMathRounding::DOWN, RoundingMode::CEILING => BrickMathRounding::CEILING, RoundingMode::FLOOR => BrickMathRounding::FLOOR, RoundingMode::HALF_UP => BrickMathRounding::HALF_UP, RoundingMode::HALF_DOWN => BrickMathRounding::HALF_DOWN, RoundingMode::HALF_CEILING => BrickMathRounding::HALF_CEILING, RoundingMode::HALF_FLOOR => BrickMathRounding::HALF_FLOOR, RoundingMode::HALF_EVEN => BrickMathRounding::HALF_EVEN, ]; public function add(NumberInterface $augend, NumberInterface ...$addends): NumberInterface { $sum = BigInteger::of($augend->toString()); foreach ($addends as $addend) { $sum = $sum->plus($addend->toString()); } return new IntegerObject((string) $sum); } public function subtract(NumberInterface $minuend, NumberInterface ...$subtrahends): NumberInterface { $difference = BigInteger::of($minuend->toString()); foreach ($subtrahends as $subtrahend) { $difference = $difference->minus($subtrahend->toString()); } return new IntegerObject((string) $difference); } public function multiply(NumberInterface $multiplicand, NumberInterface ...$multipliers): NumberInterface { $product = BigInteger::of($multiplicand->toString()); foreach ($multipliers as $multiplier) { $product = $product->multipliedBy($multiplier->toString()); } return new IntegerObject((string) $product); } public function divide( int $roundingMode, int $scale, NumberInterface $dividend, NumberInterface ...$divisors ): NumberInterface { $brickRounding = $this->getBrickRoundingMode($roundingMode); $quotient = BigDecimal::of($dividend->toString()); foreach ($divisors as $divisor) { $quotient = $quotient->dividedBy($divisor->toString(), $scale, $brickRounding); } if ($scale === 0) { return new IntegerObject((string) $quotient->toBigInteger()); } return new Decimal((string) $quotient); } public function fromBase(string $value, int $base): IntegerObject { try { return new IntegerObject((string) BigInteger::fromBase($value, $base)); } catch (MathException | \InvalidArgumentException $exception) { throw new InvalidArgumentException( $exception->getMessage(), (int) $exception->getCode(), $exception ); } } public function toBase(IntegerObject $value, int $base): string { try { return BigInteger::of($value->toString())->toBase($base); } catch (MathException | \InvalidArgumentException $exception) { throw new InvalidArgumentException( $exception->getMessage(), (int) $exception->getCode(), $exception ); } } public function toHexadecimal(IntegerObject $value): Hexadecimal { return new Hexadecimal($this->toBase($value, 16)); } public function toInteger(Hexadecimal $value): IntegerObject { return $this->fromBase($value->toString(), 16); } /** * Maps ramsey/uuid rounding modes to those used by brick/math */ private function getBrickRoundingMode(int $roundingMode): int { return self::ROUNDING_MODE_MAP[$roundingMode] ?? 0; } } RoundingMode.php 0000644 00000011637 15107543063 0007663 0 ustar 00 <?php /** * This file was originally part of brick/math * * Copyright (c) 2013-present Benjamin Morel * * 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 NONINFRINGEMENT. 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. * * @link https://github.com/brick/math brick/math at GitHub */ declare(strict_types=1); namespace Ramsey\Uuid\Math; /** * Specifies a rounding behavior for numerical operations capable of discarding * precision. * * Each rounding mode indicates how the least significant returned digit of a * rounded result is to be calculated. If fewer digits are returned than the * digits needed to represent the exact numerical result, the discarded digits * will be referred to as the discarded fraction regardless the digits' * contribution to the value of the number. In other words, considered as a * numerical value, the discarded fraction could have an absolute value greater * than one. */ final class RoundingMode { /** * Private constructor. This class is not instantiable. * * @codeCoverageIgnore */ private function __construct() { } /** * Asserts that the requested operation has an exact result, hence no * rounding is necessary. */ public const UNNECESSARY = 0; /** * Rounds away from zero. * * Always increments the digit prior to a nonzero discarded fraction. * Note that this rounding mode never decreases the magnitude of the * calculated value. */ public const UP = 1; /** * Rounds towards zero. * * Never increments the digit prior to a discarded fraction (i.e., * truncates). Note that this rounding mode never increases the magnitude of * the calculated value. */ public const DOWN = 2; /** * Rounds towards positive infinity. * * If the result is positive, behaves as for UP; if negative, behaves as for * DOWN. Note that this rounding mode never decreases the calculated value. */ public const CEILING = 3; /** * Rounds towards negative infinity. * * If the result is positive, behave as for DOWN; if negative, behave as for * UP. Note that this rounding mode never increases the calculated value. */ public const FLOOR = 4; /** * Rounds towards "nearest neighbor" unless both neighbors are equidistant, * in which case round up. * * Behaves as for UP if the discarded fraction is >= 0.5; otherwise, behaves * as for DOWN. Note that this is the rounding mode commonly taught at * school. */ public const HALF_UP = 5; /** * Rounds towards "nearest neighbor" unless both neighbors are equidistant, * in which case round down. * * Behaves as for UP if the discarded fraction is > 0.5; otherwise, behaves * as for DOWN. */ public const HALF_DOWN = 6; /** * Rounds towards "nearest neighbor" unless both neighbors are equidistant, * in which case round towards positive infinity. * * If the result is positive, behaves as for HALF_UP; if negative, behaves * as for HALF_DOWN. */ public const HALF_CEILING = 7; /** * Rounds towards "nearest neighbor" unless both neighbors are equidistant, * in which case round towards negative infinity. * * If the result is positive, behaves as for HALF_DOWN; if negative, behaves * as for HALF_UP. */ public const HALF_FLOOR = 8; /** * Rounds towards the "nearest neighbor" unless both neighbors are * equidistant, in which case rounds towards the even neighbor. * * Behaves as for HALF_UP if the digit to the left of the discarded fraction * is odd; behaves as for HALF_DOWN if it's even. * * Note that this is the rounding mode that statistically minimizes * cumulative error when applied repeatedly over a sequence of calculations. * It is sometimes known as "Banker's rounding", and is chiefly used in the * USA. */ public const HALF_EVEN = 9; } CalculatorInterface.php 0000644 00000007176 15107543064 0011207 0 ustar 00 <?php /** * This file is part of the ramsey/uuid library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ declare(strict_types=1); namespace Ramsey\Uuid\Math; use Ramsey\Uuid\Type\Hexadecimal; use Ramsey\Uuid\Type\Integer as IntegerObject; use Ramsey\Uuid\Type\NumberInterface; /** * A calculator performs arithmetic operations on numbers * * @psalm-immutable */ interface CalculatorInterface { /** * Returns the sum of all the provided parameters * * @param NumberInterface $augend The first addend (the integer being added to) * @param NumberInterface ...$addends The additional integers to a add to the augend * * @return NumberInterface The sum of all the parameters */ public function add(NumberInterface $augend, NumberInterface ...$addends): NumberInterface; /** * Returns the difference of all the provided parameters * * @param NumberInterface $minuend The integer being subtracted from * @param NumberInterface ...$subtrahends The integers to subtract from the minuend * * @return NumberInterface The difference after subtracting all parameters */ public function subtract(NumberInterface $minuend, NumberInterface ...$subtrahends): NumberInterface; /** * Returns the product of all the provided parameters * * @param NumberInterface $multiplicand The integer to be multiplied * @param NumberInterface ...$multipliers The factors by which to multiply the multiplicand * * @return NumberInterface The product of multiplying all the provided parameters */ public function multiply(NumberInterface $multiplicand, NumberInterface ...$multipliers): NumberInterface; /** * Returns the quotient of the provided parameters divided left-to-right * * @param int $roundingMode The RoundingMode constant to use for this operation * @param int $scale The scale to use for this operation * @param NumberInterface $dividend The integer to be divided * @param NumberInterface ...$divisors The integers to divide $dividend by, in * the order in which the division operations should take place * (left-to-right) * * @return NumberInterface The quotient of dividing the provided parameters left-to-right */ public function divide( int $roundingMode, int $scale, NumberInterface $dividend, NumberInterface ...$divisors ): NumberInterface; /** * Converts a value from an arbitrary base to a base-10 integer value * * @param string $value The value to convert * @param int $base The base to convert from (i.e., 2, 16, 32, etc.) * * @return IntegerObject The base-10 integer value of the converted value */ public function fromBase(string $value, int $base): IntegerObject; /** * Converts a base-10 integer value to an arbitrary base * * @param IntegerObject $value The integer value to convert * @param int $base The base to convert to (i.e., 2, 16, 32, etc.) * * @return string The value represented in the specified base */ public function toBase(IntegerObject $value, int $base): string; /** * Converts an Integer instance to a Hexadecimal instance */ public function toHexadecimal(IntegerObject $value): Hexadecimal; /** * Converts a Hexadecimal instance to an Integer instance */ public function toInteger(Hexadecimal $value): IntegerObject; }
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