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# ChangelogAll notable changes to this project will be documented in this file.## [0.11.0](https://github.com/brick/math/releases/tag/0.11.0) - 2023-01-16💥 **Breaking changes**- Minimum PHP version is now 8.0- Methods accepting a union of types are now strongly typed<sup>*</sup>- `MathException` now extends `Exception` instead of `RuntimeException`<sup>* You may now run into type errors if you were passing `Stringable` objects to `of()` or any of the methodsinternally calling `of()`, with `strict_types` enabled. You can fix this by casting `Stringable` objects to `string`first.</sup>## [0.10.2](https://github.com/brick/math/releases/tag/0.10.2) - 2022-08-11👌 **Improvements**- `BigRational::toFloat()` now simplifies the fraction before performing division (#73) thanks to @olsavmic## [0.10.1](https://github.com/brick/math/releases/tag/0.10.1) - 2022-08-02✨ **New features**- `BigInteger::gcdMultiple()` returns the GCD of multiple `BigInteger` numbers## [0.10.0](https://github.com/brick/math/releases/tag/0.10.0) - 2022-06-18💥 **Breaking changes**- Minimum PHP version is now 7.4## [0.9.3](https://github.com/brick/math/releases/tag/0.9.3) - 2021-08-15🚀 **Compatibility with PHP 8.1**- Support for custom object serialization; this removes a warning on PHP 8.1 due to the `Serializable` interface being deprecated (#60) thanks @TRowbotham## [0.9.2](https://github.com/brick/math/releases/tag/0.9.2) - 2021-01-20🐛 **Bug fix**- Incorrect results could be returned when using the BCMath calculator, with a default scale set with `bcscale()`, on PHP >= 7.2 (#55).## [0.9.1](https://github.com/brick/math/releases/tag/0.9.1) - 2020-08-19✨ **New features**- `BigInteger::not()` returns the bitwise `NOT` value🐛 **Bug fixes**- `BigInteger::toBytes()` could return an incorrect binary representation for some numbers- The bitwise operations `and()`, `or()`, `xor()` on `BigInteger` could return an incorrect result when the GMP extension is not available## [0.9.0](https://github.com/brick/math/releases/tag/0.9.0) - 2020-08-18👌 **Improvements**- `BigNumber::of()` now accepts `.123` and `123.` formats, both of which return a `BigDecimal`💥 **Breaking changes**- Deprecated method `BigInteger::powerMod()` has been removed - use `modPow()` instead- Deprecated method `BigInteger::parse()` has been removed - use `fromBase()` instead## [0.8.17](https://github.com/brick/math/releases/tag/0.8.17) - 2020-08-19🐛 **Bug fix**- `BigInteger::toBytes()` could return an incorrect binary representation for some numbers- The bitwise operations `and()`, `or()`, `xor()` on `BigInteger` could return an incorrect result when the GMP extension is not available## [0.8.16](https://github.com/brick/math/releases/tag/0.8.16) - 2020-08-18🚑 **Critical fix**- This version reintroduces the deprecated `BigInteger::parse()` method, that has been removed by mistake in version `0.8.9` and should have lasted for the whole `0.8` release cycle.✨ **New features**- `BigInteger::modInverse()` calculates a modular multiplicative inverse- `BigInteger::fromBytes()` creates a `BigInteger` from a byte string- `BigInteger::toBytes()` converts a `BigInteger` to a byte string- `BigInteger::randomBits()` creates a pseudo-random `BigInteger` of a given bit length- `BigInteger::randomRange()` creates a pseudo-random `BigInteger` between two bounds💩 **Deprecations**- `BigInteger::powerMod()` is now deprecated in favour of `modPow()`## [0.8.15](https://github.com/brick/math/releases/tag/0.8.15) - 2020-04-15🐛 **Fixes**- added missing `ext-json` requirement, due to `BigNumber` implementing `JsonSerializable`âš¡ï¸ **Optimizations**- additional optimization in `BigInteger::remainder()`## [0.8.14](https://github.com/brick/math/releases/tag/0.8.14) - 2020-02-18✨ **New features**- `BigInteger::getLowestSetBit()` returns the index of the rightmost one bit## [0.8.13](https://github.com/brick/math/releases/tag/0.8.13) - 2020-02-16✨ **New features**- `BigInteger::isEven()` tests whether the number is even- `BigInteger::isOdd()` tests whether the number is odd- `BigInteger::testBit()` tests if a bit is set- `BigInteger::getBitLength()` returns the number of bits in the minimal representation of the number## [0.8.12](https://github.com/brick/math/releases/tag/0.8.12) - 2020-02-03🛠️ **Maintenance release**Classes are now annotated for better static analysis with [psalm](https://psalm.dev/).This is a maintenance release: no bug fixes, no new features, no breaking changes.## [0.8.11](https://github.com/brick/math/releases/tag/0.8.11) - 2020-01-23✨ **New feature**`BigInteger::powerMod()` performs a power-with-modulo operation. Useful for crypto.## [0.8.10](https://github.com/brick/math/releases/tag/0.8.10) - 2020-01-21✨ **New feature**`BigInteger::mod()` returns the **modulo** of two numbers. The *modulo* differs from the *remainder* when the signs of the operands are different.## [0.8.9](https://github.com/brick/math/releases/tag/0.8.9) - 2020-01-08âš¡ï¸ **Performance improvements**A few additional optimizations in `BigInteger` and `BigDecimal` when one of the operands can be returned as is. Thanks to @tomtomsen in #24.## [0.8.8](https://github.com/brick/math/releases/tag/0.8.8) - 2019-04-25🐛 **Bug fixes**- `BigInteger::toBase()` could return an empty string for zero values (BCMath & Native calculators only, GMP calculator unaffected)✨ **New features**- `BigInteger::toArbitraryBase()` converts a number to an arbitrary base, using a custom alphabet- `BigInteger::fromArbitraryBase()` converts a string in an arbitrary base, using a custom alphabet, back to a numberThese methods can be used as the foundation to convert strings between different bases/alphabets, using BigInteger as an intermediate representation.💩 **Deprecations**- `BigInteger::parse()` is now deprecated in favour of `fromBase()``BigInteger::fromBase()` works the same way as `parse()`, with 2 minor differences:- the `$base` parameter is required, it does not default to `10`- it throws a `NumberFormatException` instead of an `InvalidArgumentException` when the number is malformed## [0.8.7](https://github.com/brick/math/releases/tag/0.8.7) - 2019-04-20**Improvements**- Safer conversion from `float` when using custom locales- **Much faster** `NativeCalculator` implementation 🚀You can expect **at least a 3x performance improvement** for common arithmetic operations when using the library on systems without GMP or BCMath; it gets exponentially faster on multiplications with a high number of digits. This is due to calculations now being performed on whole blocks of digits (the block size depending on the platform, 32-bit or 64-bit) instead of digit-by-digit as before.## [0.8.6](https://github.com/brick/math/releases/tag/0.8.6) - 2019-04-11**New method**`BigNumber::sum()` returns the sum of one or more numbers.## [0.8.5](https://github.com/brick/math/releases/tag/0.8.5) - 2019-02-12**Bug fix**: `of()` factory methods could fail when passing a `float` in environments using a `LC_NUMERIC` locale with a decimal separator other than `'.'` (#20).Thanks @manowark 👍## [0.8.4](https://github.com/brick/math/releases/tag/0.8.4) - 2018-12-07**New method**`BigDecimal::sqrt()` calculates the square root of a decimal number, to a given scale.## [0.8.3](https://github.com/brick/math/releases/tag/0.8.3) - 2018-12-06**New method**`BigInteger::sqrt()` calculates the square root of a number (thanks @peter279k).**New exception**`NegativeNumberException` is thrown when calling `sqrt()` on a negative number.## [0.8.2](https://github.com/brick/math/releases/tag/0.8.2) - 2018-11-08**Performance update**- Further improvement of `toInt()` performance- `NativeCalculator` can now perform some multiplications more efficiently## [0.8.1](https://github.com/brick/math/releases/tag/0.8.1) - 2018-11-07Performance optimization of `toInt()` methods.## [0.8.0](https://github.com/brick/math/releases/tag/0.8.0) - 2018-10-13**Breaking changes**The following deprecated methods have been removed. Use the new method name instead:| Method removed | Replacement method || --- | --- || `BigDecimal::getIntegral()` | `BigDecimal::getIntegralPart()` || `BigDecimal::getFraction()` | `BigDecimal::getFractionalPart()` |---**New features**`BigInteger` has been augmented with 5 new methods for bitwise operations:| New method | Description || --- | --- || `and()` | performs a bitwise `AND` operation on two numbers || `or()` | performs a bitwise `OR` operation on two numbers || `xor()` | performs a bitwise `XOR` operation on two numbers || `shiftedLeft()` | returns the number shifted left by a number of bits || `shiftedRight()` | returns the number shifted right by a number of bits |Thanks to @DASPRiD 👍## [0.7.3](https://github.com/brick/math/releases/tag/0.7.3) - 2018-08-20**New method:** `BigDecimal::hasNonZeroFractionalPart()`**Renamed/deprecated methods:**- `BigDecimal::getIntegral()` has been renamed to `getIntegralPart()` and is now deprecated- `BigDecimal::getFraction()` has been renamed to `getFractionalPart()` and is now deprecated## [0.7.2](https://github.com/brick/math/releases/tag/0.7.2) - 2018-07-21**Performance update**`BigInteger::parse()` and `toBase()` now use GMP's built-in base conversion features when available.## [0.7.1](https://github.com/brick/math/releases/tag/0.7.1) - 2018-03-01This is a maintenance release, no code has been changed.- When installed with `--no-dev`, the autoloader does not autoload tests anymore- Tests and other files unnecessary for production are excluded from the dist packageThis will help make installations more compact.## [0.7.0](https://github.com/brick/math/releases/tag/0.7.0) - 2017-10-02Methods renamed:- `BigNumber:sign()` has been renamed to `getSign()`- `BigDecimal::unscaledValue()` has been renamed to `getUnscaledValue()`- `BigDecimal::scale()` has been renamed to `getScale()`- `BigDecimal::integral()` has been renamed to `getIntegral()`- `BigDecimal::fraction()` has been renamed to `getFraction()`- `BigRational::numerator()` has been renamed to `getNumerator()`- `BigRational::denominator()` has been renamed to `getDenominator()`Classes renamed:- `ArithmeticException` has been renamed to `MathException`## [0.6.2](https://github.com/brick/math/releases/tag/0.6.2) - 2017-10-02The base class for all exceptions is now `MathException`.`ArithmeticException` has been deprecated, and will be removed in 0.7.0.## [0.6.1](https://github.com/brick/math/releases/tag/0.6.1) - 2017-10-02A number of methods have been renamed:- `BigNumber:sign()` is deprecated; use `getSign()` instead- `BigDecimal::unscaledValue()` is deprecated; use `getUnscaledValue()` instead- `BigDecimal::scale()` is deprecated; use `getScale()` instead- `BigDecimal::integral()` is deprecated; use `getIntegral()` instead- `BigDecimal::fraction()` is deprecated; use `getFraction()` instead- `BigRational::numerator()` is deprecated; use `getNumerator()` instead- `BigRational::denominator()` is deprecated; use `getDenominator()` insteadThe old methods will be removed in version 0.7.0.## [0.6.0](https://github.com/brick/math/releases/tag/0.6.0) - 2017-08-25- Minimum PHP version is now [7.1](https://gophp71.org/); for PHP 5.6 and PHP 7.0 support, use version `0.5`- Deprecated method `BigDecimal::withScale()` has been removed; use `toScale()` instead- Method `BigNumber::toInteger()` has been renamed to `toInt()`## [0.5.4](https://github.com/brick/math/releases/tag/0.5.4) - 2016-10-17`BigNumber` classes now implement [JsonSerializable](http://php.net/manual/en/class.jsonserializable.php).The JSON output is always a string.## [0.5.3](https://github.com/brick/math/releases/tag/0.5.3) - 2016-03-31This is a bugfix release. Dividing by a negative power of 1 with the same scale as the dividend could trigger an incorrect optimization which resulted in a wrong result. See #6.## [0.5.2](https://github.com/brick/math/releases/tag/0.5.2) - 2015-08-06The `$scale` parameter of `BigDecimal::dividedBy()` is now optional again.## [0.5.1](https://github.com/brick/math/releases/tag/0.5.1) - 2015-07-05**New method: `BigNumber::toScale()`**This allows to convert any `BigNumber` to a `BigDecimal` with a given scale, using rounding if necessary.## [0.5.0](https://github.com/brick/math/releases/tag/0.5.0) - 2015-07-04**New features**- Common `BigNumber` interface for all classes, with the following methods:- `sign()` and derived methods (`isZero()`, `isPositive()`, ...)- `compareTo()` and derived methods (`isEqualTo()`, `isGreaterThan()`, ...) that work across different `BigNumber` types- `toBigInteger()`, `toBigDecimal()`, `toBigRational`() conversion methods- `toInteger()` and `toFloat()` conversion methods to native types- Unified `of()` behaviour: every class now accepts any type of number, provided that it can be safely converted to the current type- New method: `BigDecimal::exactlyDividedBy()`; this method automatically computes the scale of the result, provided that the division yields a finite number of digits- New methods: `BigRational::quotient()` and `remainder()`- Fine-grained exceptions: `DivisionByZeroException`, `RoundingNecessaryException`, `NumberFormatException`- Factory methods `zero()`, `one()` and `ten()` available in all classes- Rounding mode reintroduced in `BigInteger::dividedBy()`This release also comes with many performance improvements.---**Breaking changes**- `BigInteger`:- `getSign()` is renamed to `sign()`- `toString()` is renamed to `toBase()`- `BigInteger::dividedBy()` now throws an exception by default if the remainder is not zero; use `quotient()` to get the previous behaviour- `BigDecimal`:- `getSign()` is renamed to `sign()`- `getUnscaledValue()` is renamed to `unscaledValue()`- `getScale()` is renamed to `scale()`- `getIntegral()` is renamed to `integral()`- `getFraction()` is renamed to `fraction()`- `divideAndRemainder()` is renamed to `quotientAndRemainder()`- `dividedBy()` now takes a **mandatory** `$scale` parameter **before** the rounding mode- `toBigInteger()` does not accept a `$roundingMode` parameter anymore- `toBigRational()` does not simplify the fraction anymore; explicitly add `->simplified()` to get the previous behaviour- `BigRational`:- `getSign()` is renamed to `sign()`- `getNumerator()` is renamed to `numerator()`- `getDenominator()` is renamed to `denominator()`- `of()` is renamed to `nd()`, while `parse()` is renamed to `of()`- Miscellaneous:- `ArithmeticException` is moved to an `Exception\` sub-namespace- `of()` factory methods now throw `NumberFormatException` instead of `InvalidArgumentException`## [0.4.3](https://github.com/brick/math/releases/tag/0.4.3) - 2016-03-31Backport of two bug fixes from the 0.5 branch:- `BigInteger::parse()` did not always throw `InvalidArgumentException` as expected- Dividing by a negative power of 1 with the same scale as the dividend could trigger an incorrect optimization which resulted in a wrong result. See #6.## [0.4.2](https://github.com/brick/math/releases/tag/0.4.2) - 2015-06-16New method: `BigDecimal::stripTrailingZeros()`## [0.4.1](https://github.com/brick/math/releases/tag/0.4.1) - 2015-06-12Introducing a `BigRational` class, to perform calculations on fractions of any size.## [0.4.0](https://github.com/brick/math/releases/tag/0.4.0) - 2015-06-12Rounding modes have been removed from `BigInteger`, and are now a concept specific to `BigDecimal`.`BigInteger::dividedBy()` now always returns the quotient of the division.## [0.3.5](https://github.com/brick/math/releases/tag/0.3.5) - 2016-03-31Backport of two bug fixes from the 0.5 branch:- `BigInteger::parse()` did not always throw `InvalidArgumentException` as expected- Dividing by a negative power of 1 with the same scale as the dividend could trigger an incorrect optimization which resulted in a wrong result. See #6.## [0.3.4](https://github.com/brick/math/releases/tag/0.3.4) - 2015-06-11New methods:- `BigInteger::remainder()` returns the remainder of a division only- `BigInteger::gcd()` returns the greatest common divisor of two numbers## [0.3.3](https://github.com/brick/math/releases/tag/0.3.3) - 2015-06-07Fix `toString()` not handling negative numbers.## [0.3.2](https://github.com/brick/math/releases/tag/0.3.2) - 2015-06-07`BigInteger` and `BigDecimal` now have a `getSign()` method that returns:- `-1` if the number is negative- `0` if the number is zero- `1` if the number is positive## [0.3.1](https://github.com/brick/math/releases/tag/0.3.1) - 2015-06-05Minor performance improvements## [0.3.0](https://github.com/brick/math/releases/tag/0.3.0) - 2015-06-04The `$roundingMode` and `$scale` parameters have been swapped in `BigDecimal::dividedBy()`.## [0.2.2](https://github.com/brick/math/releases/tag/0.2.2) - 2015-06-04Stronger immutability guarantee for `BigInteger` and `BigDecimal`.So far, it would have been possible to break immutability of these classes by calling the `unserialize()` internal function. This release fixes that.## [0.2.1](https://github.com/brick/math/releases/tag/0.2.1) - 2015-06-02Added `BigDecimal::divideAndRemainder()`## [0.2.0](https://github.com/brick/math/releases/tag/0.2.0) - 2015-05-22- `min()` and `max()` do not accept an `array` anymore, but a variable number of parameters- **minimum PHP version is now 5.6**- continuous integration with PHP 7## [0.1.1](https://github.com/brick/math/releases/tag/0.1.1) - 2014-09-01- Added `BigInteger::power()`- Added HHVM support## [0.1.0](https://github.com/brick/math/releases/tag/0.1.0) - 2014-08-31First beta release.