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Ver 0.4.4 (2026-03-17)

Update dependencies (#48)
- Thanks to JSorngard
Export erfcx from public API
Add max iteration guard to gser/gcf to prevent potential infinite loops
Add input validation to beta()
Clarify misleading comment in faddeeva.rs

Ver 0.4.3 (2025-11-12)

Implement the Gamma function by Toshio Fukushima with very low relative error
- Replace the previous Lanczos + reflection formula based implementation with Fukushima's polynomial approximation algorithm
- Reduce relative error from ~1e-10 to ~1e-14 (often within a single ULP)
- Add comprehensive special case handling following the ISO C 99 standard (NaN, ±∞, ±0, negative integers)
- Add polynomial (Horner's method) and mul_add utility functions with optional FMA support
- Contributors: JSorngard
- Related PR: #47

Ver 0.4.2 (2025-10-15)

Improve numerical stability in gammp and gammq
- Add overflow/underflow guards in series and continued fraction methods
- Implement log-sum-exp trick in quadrature approximation
- Add edge case handling and result clamping to [0,1]
- Fix NaN issue when x << a for large a (a >= 100) by using series expansion instead of quadrature
  - For large a with x < 0.2*a, now uses more stable series method
  - Resolves edge case failures in test suite (e.g., gammp(120, 0.1))

Ver 0.4.1 (2025-04-25)

Add all branches of the complex Lambert W function
- Contributors: JSorngard
- Related issue: #40
- Related PR: #45
Enhance CI / Fix proptest & lint
- Contributors: JSorngard
- Related issue: #42
- Related PRs:
  - #41
  - #43
  - #44

Ver 0.4.0 (2025-02-24)

Implement Faddeeva function

Contributors: ethanbarry, inkydragon, Axect, JSorngard
Related PRs
- #30
Newly added dependencies
- num-complex

Fix bugs

#32 : Fix swapped doc for inverf and inverfc (Thanks to ethanbarry)
#36 : Fix gamma function for 1f64 (Thanks to arihant2math)

Ver 0.3.0 (2024-10-17)

Implement comprehensive Tests & Integrate `lambert_w`

Contributors: JSorngard, Axect, ethanbarry
Related issue: #12
Related PRs
- #10
- #13
- #15
- #16
- #17
- #18
- #19
- #21
- #22
- #23
- #24
- #25
- #26
Newly added dependencies
- lambert_w

Ver 0.2.5 (2024-08-03)

Implement Dawson's integral (#9) (Thanks to ethanbarry)
- dawson(x: f64) -> f64: Dawson's integral

Ver 0.2.4 (2024-04-04)

Implement Bessel & Modified Bessel functions
- Integer order
  - Jn(n: usize, x: f64) -> f64: Bessel function of the first kind
  - Yn(n: usize, x: f64) -> f64: Bessel function of the second kind
  - In(n: usize, x: f64) -> f64: Modified Bessel function of the first kind
  - Kn(n: usize, x: f64) -> f64: Modified Bessel function of the second kind
- Fractional order
  - besseljy(nu: f64, x: f64) -> (f64, f64, f64, f64): Bessel functions (include derivatives)
  - besselik(nu: f64, x: f64) -> (f64, f64, f64, f64): Modified Bessel functions (include derivatives)
  - Jnu_Ynu(nu: f64, x: f64) -> (f64, f64): Bessel functions
  - Inu_Knu(nu: f64, x: f64) -> (f64, f64): Modified Bessel functions

Ver 0.2.3 (2024-02-18)

Add docs.rs badge to README.md
Add latex support to gammp and gammq in docs

Ver 0.2.1 (2024-02-17)

Update README.md
- Fix typo (gammap -> gammp, gammaq -> gammq)

Ver 0.2.0 (2022-05-02)

Fix bugs (#4)

Ver 0.1.5 (2021-01-24)

LICENSE Update : BSD-3-Clause -> MIT or Apache-2.0

Ver 0.1.4 (2020-08-06)

Make public ln_gamma. (Thanks to rw)