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# Changelog

## [Unreleased]

## [math/v1.5.0](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.5.0) - 2025-01-06

* [#11783](https://github.com/cosmos/cosmos-sdk/issues/11783) Upstream GDA based decimal type

## [math/v1.4.0](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.4.0) - 2024-11-20

### Features

* [#20034](https://github.com/cosmos/cosmos-sdk/pull/20034) Significantly speedup LegacyDec.QuoTruncate and LegacyDec.QuoRoundUp.

### Bug fixes

* Fix [ASA-2024-010: Math](https://github.com/cosmos/cosmos-sdk/security/advisories/GHSA-7225-m954-23v7) Bit length differences between Int and Dec


## [math/v1.3.0](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.3.0) - 2024-02-22

### Features

* [#18552](https://github.com/cosmos/cosmos-sdk/pull/18552) Add safe arithmetic operations for `math.Int` that return an error in case of an overflow or any mishap.
* [#18421](https://github.com/cosmos/cosmos-sdk/pull/18421) Add mutative api for `LegacyDec.BigInt()`.
* [#18874](https://github.com/cosmos/cosmos-sdk/pull/18874) Speedup `math.Int.Mul` by removing a duplicate overflow check
* [#19386](https://github.com/cosmos/cosmos-sdk/pull/19386) Speedup `math.Int` overflow checks
* [#19466](https://github.com/cosmos/cosmos-sdk/pull/19466) Speedup `math.NewLegacyDec` by one heap allocation
* [#19467](https://github.com/cosmos/cosmos-sdk/pull/19467) Slightly speedup `math.LegacyDec` `Ceil` and `MarshalTo` methods
* [#19479](https://github.com/cosmos/cosmos-sdk/pull/19479) Speedup `math.LegacyDec` functions that involve `math.Int` by removing a heap allocation. (`Ceil`, `TruncateInt`, `NewLegacyDecFromInt`)

### Bug Fixes

* [#18519](https://github.com/cosmos/cosmos-sdk/pull/18519) Prevent Overflow in `Dec.Ceil()`.

## [math/v1.2.0](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.2.0) - 2023-11-07

### Features

* [#18247](https://github.com/cosmos/cosmos-sdk/pull/18247) Add mutative api for `Uint.BigInt()`.
* [#17803](https://github.com/cosmos/cosmos-sdk/pull/17803) Add mutative api for `Int.BigInt()`.
* [#18030](https://github.com/cosmos/cosmos-sdk/pull/18030) Add mutative api for `NewIntFromBigInt`.

### Bug Fixes

* [#18228](https://github.com/cosmos/cosmos-sdk/pull/18228) Fix panic when calling `BigInt()` on an uninitialized `Uint`.
* [#18214](https://github.com/cosmos/cosmos-sdk/pull/18214) Ensure that modifying the argument to `NewUIntFromBigInt` doesn't mutate the returned value.
* [#18211](https://github.com/cosmos/cosmos-sdk/pull/18211) RelativePow now returns 1 when 0^0, before it was returning the scale factor.
* [#17725](https://github.com/cosmos/cosmos-sdk/pull/17725) Fix state break in ApproxRoot. This has been present since math/v1.0.1. It changed the rounding behavior at precision end in an intermediary division from banker's to truncation. The truncation occurs from binary right shift in the case of square roots. The change is now reverted back to banker's rounding universally for any root.

## [math/v1.1.2](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.1.2) - 2023-08-21

### Bug Fixes

* [#17489](https://github.com/cosmos/cosmos-sdk/pull/17489) Revert [#16263](https://github.com/cosmos/cosmos-sdk/pull/16263).

## [math/v1.1.1](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.1.1) - 2023-08-21

### Bug Fixes

* [#17480](https://github.com/cosmos/cosmos-sdk/pull/17480) Fix panic when calling `.Size()` on a nil `math.Int` value.

## [math/v1.1.0](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.1.0) - 2023-08-19

### Features

* [#17427](https://github.com/cosmos/cosmos-sdk/pull/17427) Implement LegacyDec.MulRoundUp that rounds up at precision end.

### Improvements

* [#17109](https://github.com/cosmos/cosmos-sdk/pull/17109) Add `.ToLegacyDec()` method on `math.Int` type for converting to `math.LegacyDec`.
* [#16263](https://github.com/cosmos/cosmos-sdk/pull/16263) Improved `math/Int.Size` by computing the decimal digits count instead of firstly invoking .Marshal() then checking the length

### Bug Fixes

* [#17352](https://github.com/cosmos/cosmos-sdk/pull/17352) Ensure that modifying the argument to `NewIntFromBigInt` doesn't mutate the returned value.
* [#16266](https://github.com/cosmos/cosmos-sdk/pull/16266) Fix legacy dec power mut zero exponent precision.

## [math/v1.0.1](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.0.1) - 2023-05-15

### Improvements

* [#15768](https://github.com/cosmos/cosmos-sdk/pull/15768) Removed the second call to the `init` method for the global variable `grand`.
* [#16141](https://github.com/cosmos/cosmos-sdk/pull/16141) Speedup `LegacyDec.ApproxRoot` and `LegacyDec.ApproxSqrt`.

### Bug Fixes

* [#15714](https://github.com/cosmos/cosmos-sdk/pull/15714) `FormatInt` returns an error on empty string.

## [math/v1.0.0](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.0.0) - 2023-03-23

### Bug Fixes

* [#15506](https://github.com/cosmos/cosmos-sdk/issues/16605) Dec marshal shouldn't have side effects

## [math/v1.0.0-rc.0](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.0.0-rc.0) - 2023-03-13

### Features

* [#15043](https://github.com/cosmos/cosmos-sdk/issues/15043) add rand funcs to math

### Bug Fixes

* [#14922](https://github.com/cosmos/cosmos-sdk/issues/14922) check for negative precision

### Testing

* [#15215](https://github.com/cosmos/cosmos-sdk/issues/15215) fix `FormatDec` test

## [math/v1.0.0-beta.6](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.0.0-beta.6) - 2023-02-06

### Features

* [#14760](https://github.com/cosmos/cosmos-sdk/issues/14760) add collections key encoders and value encoders for common types.
* [#14166](https://github.com/cosmos/cosmos-sdk/issues/14166) math: add generics versions of Max, Min to cater to all numeric types
* [#13381](https://github.com/cosmos/cosmos-sdk/issues/13381) add uint `IsNil` method

### Improvements

* [#14010](https://github.com/cosmos/cosmos-sdk/issues/14010) math: optimize and test FormatInt + simplify LegacyNewDecFromStr
* [#12794](https://github.com/cosmos/cosmos-sdk/issues/12794) math: precompute & use square of precisionReuse instead of 2 repeated computations

### Bug Fixes

* [#14691](https://github.com/cosmos/cosmos-sdk/issues/14691) do not flatten events attributes by event types
* [#14252](https://github.com/cosmos/cosmos-sdk/issues/14252) math: add LegacyNewDecFromStr fuzzers + remove unnecessary error wrapping

### Testing

* [#14576](https://github.com/cosmos/cosmos-sdk/issues/14576) Added test cases for precisionMultiplier

## [math/v1.0.0-beta.3](https://github.com/cosmos/cosmos-sdk/releases/tag/math/v1.0.0-beta.3) - 2022-07-20

### Bug Fixes

* [#11996](https://github.com/cosmos/cosmos-sdk/issues/11996) math: fix Uint.Unmarshal's lack of negative value checking

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