0.8.17

🐛 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

🚑 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

🐛 Fixes

• added missing ext-json requirement, due to BigNumber implementing JsonSerializable

⚡️ Optimizations

• additional optimization in BigInteger::remainder()

0.8.14

✨ New features

• BigInteger::getLowestSetBit() returns the index of the rightmost one bit

0.8.13

✨ 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

🛠️ Maintenance release

Classes are now annotated for better static analysis with psalm.

This is a maintenance release: no bug fixes, no new features, no breaking changes.

0.8.11

✨ New feature

BigInteger::powerMod() performs a power-with-modulo operation. Useful for crypto.

0.8.10

✨ 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

⚡️ 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

🐛 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 number

These 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