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add NEWS.md entry re. raising one or negative one to a negative integer power #21836

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May 13, 2017
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add NEWS.md entry re. raising one or negative one to a negative integer power #21836

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7 changes: 7 additions & 0 deletions NEWS.md
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Expand Up @@ -337,6 +337,12 @@ Library improvements
* A new `Dates.Time` type was added that supports representing the time of day
with up to nanosecond resolution ([#12274]).

* Raising one or negative one to a negative integer power formerly threw a `DomainError`.
One raised to any negative integer power now yields one, negative one raised to any
negative even integer power now yields one, and negative one raised to any negative
odd integer power now yields negative one. Similarly, raising `true` to any negative
integer power now yields `true` rather than throwing a `DomainError` ([#18342]).

* A new `@macroexpand` macro was added as a convenient alternative to the `macroexpand` function ([#18660]).

* A new `ConjArray` type was added, as a wrapper type for lazy complex conjugation of arrays.
Expand Down Expand Up @@ -436,6 +442,7 @@ Deprecated or removed
[#18251]: https://github.com/JuliaLang/julia/issues/18251
[#18330]: https://github.com/JuliaLang/julia/issues/18330
[#18339]: https://github.com/JuliaLang/julia/issues/18339
[#18342]: https://github.com/JuliaLang/julia/issues/18342
[#18346]: https://github.com/JuliaLang/julia/issues/18346
[#18442]: https://github.com/JuliaLang/julia/issues/18442
[#18453]: https://github.com/JuliaLang/julia/issues/18453
Expand Down