Add type for exchange rate from base - Githubissues

Concordium / concordium-contracts-common

Common functionality used by smart contracts and the host environment on the Concordium blockchain.

Mozilla Public License 2.0

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Add type for exchange rate from base #59

Closed limemloh closed 1 year ago

limemloh commented 1 year ago

Purpose

Moved ExchangeRate type from concordium-base needed for the contract chain queries.

Related to https://github.com/Concordium/concordium-base/pull/254 and https://github.com/Concordium/concordium-rust-smart-contracts/pull/185

Changes

Introduce ExchangeRate representing an exchange rate between two quantities.
Added optional dependency on num-integer for the gcd function, only when enabling derive-serde.

Checklist

[x] My code follows the style of this project.
[x] The code compiles without warnings.
[x] I have performed a self-review of the changes.
[ ] I have documented my code, in particular the intent of the hard-to-understand areas.
[x] (If necessary) I have updated the CHANGELOG.

abizjak commented 1 year ago

Please state in the PR that is is moved from concordium-base.