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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

[0.13.0] - 2026-01-06

Changed

  • Use const generics instead of types from typenum to represent units. #95

[0.12.2] - 2025-12-04

Fixed

  • Also updated num-dual dependency to 0.13 to fix incorrect dependency resolution for downstream crates. #95

[0.12.1] - 2025-12-04

Fixed

  • Updated ndarray dependency to 0.17 to fix incorrect dependency resolution. #94

[0.12.0] - 2025-11-08

Packaging

  • Updated pyo3 and numpy dependencies to 0.27. #93

[0.11.0] - 2025-09-28

Added

  • Added core functionalities for quantities with underlying data structures from nalgebra. #92
  • Added automatic differentiation capabilities from the num-dual crate. #92

[0.10.6] - 2025-06-24

Changed

  • Updated the optional num-dual dependency to 0.11.2. #91

[0.10.5] - 2025-06-03

Changed

  • Made all methods (except of logspace) of quantity arrays generic with respect to the item type. #88

[0.10.4] - 2025-06-02

Added

  • Implemented Display for Dimensionless<T>. #88
  • Implemented Debug for Angle<T>. #88
  • Added Quantity<T, U>::inv. #88

Changed

  • Generalized implementation of Quantity<T, U>::abs to every type with T: Signed. #88
  • Generalized implementation of Quantity::from_vec and Quantity::linspace. #88

[0.10.3] - 2025-05-07

Added

  • Implemented Deref for Dimensionless<T>. #86
  • Added the new type aliases MassFlux, HeatFlux, ThermalTransmittance, and ThermalResistance. #87

[0.10.2] - 2025-04-09

Added

  • Added support for the new features in num-dual 0.11.1. #83

[0.10.1] - 2025-01-09

Added

  • Added formatting (and thus Python support) for heat capacity rates. #81

[0.10.0] - 2024-12-05

Packaging

  • Update pyo3 and numpy dependencies to 0.23. #76

[0.9.1] - 2024-11-28

Fixed

  • Added division by CELSIUS in Python. #74

[0.9.0] - 2024-10-24

Changed

  • Reimplemented si-units Python package independent of quantity crate in and more "pythonic" fashion. #63
  • Reimplemented quantity to compile-time checked units using the typenum crate. #64
  • Hide non-essential dependencies behind features ndarray, approx, num-dual, python, python_numpy. #70
  • Implemented angles based on the Quantity struct rather than the ang crate. #72

Added

  • Added basic support for the combination of structs in the num-dual crate with units. #66

Packaging

  • Update pyo3 and numpy dependencies to 0.22. #65

[0.8.0] - 2024-04-11

Packaging

  • Updated pyo3 and numpy dependencies to 0.21 and adjusted to the new Bound API.

[0.7.0] - 2023-10-15

Packaging

  • Updated pyo3 and numpy dependencies to 0.20.
  • Updated approx dependency to 0.5.

[0.6.2] - 2023-08-06

Added

  • Added new functions SIUnit::from_raw_parts and SIUnit::into_raw_parts. #55

Fixed

  • Fixed workflow for Apple universal2 wheels. #55

[0.6.1] - 2023-08-06

Added

  • Added new functions Quantity::from_raw_parts and Quantity::into_raw_parts for SI quantities. #54

[0.6.0] - 2023-01-20

Added

  • Added the new SI unit prefixes QUECTO, RONTO, RONNA, and QUETTA. #49

Packaging

  • Updated pyo3 and numpy dependencies to 0.18. #52

[0.5.1] - 2022-06-08

Added

  • Added implementations of IntoIterator for every Quantity with iteratable inner types. #48
  • Implemented FromIterator for QuantityArray1, enabling the use of collect() for quantity arrays. #48

[0.5.0] - 2022-03-09

Packaging

  • Updated pyo3 and numpy dependencies to 0.16.
  • Updated ang dependency to 0.6.

[0.4.1] - 2022-01-10

Added

  • Added implementations of __getstate__ and __setstate__ functions for PySINumber and PySIArrayX to allow pickling of python objects. #43

Fixed

  • Formatted output for SINumbers shows the correct number of decimal places again. #42
  • Fixed representation of SINumberss with zero value. #42

[0.4.0] - 2021-12-16

Added

  • QuantityScalar1<U>::from_vec as a simple way to convert vectors of scalar quantities to QuantityArrays. #40
  • Added constructor for PySIArray1 that accepts SINumber, a list of SINumbers provided they have the same unit, and PySIArray1 itself. #40

Removed

  • Removed the solve function of QuantityArray2 to avoid a dependency on external libraries (BLAS, LAPACK). #41

Packaging

  • Updated pyo3 and numpy dependencies to 0.15.

[0.3.2] - 2021-11-18

Added

  • Added J/kg/K to the list of SI unit symbols. #37
  • Divide SINumbers and SIArrays by CELSIUS. Panics if the quantity is not a temperature. #36
  • Additional unit DEBYE. Can only be used together with SI units by squaring it first. #38

[0.3.1] - 2021-11-08

Added

  • Index into PySIArray1 (get values, set values and iterate over all values). #28
  • Implement rich comparison operators (==, !=, <, <=, >, >=) in python. #27
  • Added additional arithmetic operations. #26
    • PySINumber + PySIArrayX, PySINumber - PySIArrayX, PySINumber / PySIArrayX
    • PySIArrayX + PySINumber, PySIArrayX - PySINumber
    • abs(PySINumber)

Packaging

  • The standalone Python package is renamed to si_units to avoid a name conflict on PyPI and to better reflect its content. #31

Changed

  • Comparisons (PartialOrd and PartialEq) of Quantitys now panic if they do not have the same unit. #27
  • Changed the order of the type inference in the arithmetic operations to check for scalars first. #26

Fixed

  • Fix the formatting of SINumbers with negative values. #24
  • Correctly return a np.ndarray in multiplications of scalars with arrays in which the units cancel out. #26

[0.3.0] - 2021-08-13

Added

  • Added PyAngle:From<Angle> and Angle:From<PyAngle>. #21
  • Added PySIArrayX:Deref<Target=SIArrayX> to automatically convert between &PySIArrayX and &SIArrayX. #21

Changed

  • Renamed module pyquantity to python. #19
  • Replaced all Python wrapper structs with tuple structs. #19
  • Made the fields of the tuple structs pub(crate). #21
  • Made PySINumber, PyAngle and PyCelsius Copy. #21
  • Improved float and latex representations of some SI quantities. #20

[0.2.0] - 2021-07-26

Packaging

  • Updated ndarray dependency to 0.15.
  • Updated ang dependency to 0.4.
  • Updated regex dependency to 1.5.
  • Updated ndarray-linalg dependency to 0.13.
  • Updated pyo3 dependency to 0.14.

Added

  • Constant CELSIUS, that can be used for simple temperature conversions, mirrored in python. #17

Changed

  • Removed enclosing $ from to_latex functions in rust. #16