enhance cbrt to work on Complex and to return all cube roots #29

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opened 2025-05-07 01:00:24 +00:00 by glen · 0 comments

glen commented

2025-05-07 01:00:24 +00:00

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For now, we will make cbrt with return typing strategy free or full (the default) always return all three cube roots (by analogy with sqrt's default behavior of returning Complex as necessary), but under typing strategy conservative on real inputs return just the real cube root.

This is the last function needed to implement polynomialRoot.

For now, we will make `cbrt` with return typing strategy `free` or `full` (the default) always return all three cube roots (by analogy with `sqrt`'s default behavior of returning Complex as necessary), but under typing strategy `conservative` on real inputs return just the real cube root. This is the last function needed to implement polynomialRoot.