From: XrXr@... Date: 2020-03-07T23:40:31+00:00 Subject: [ruby-core:97412] [Ruby master Bug#16677] Negative integer powered (**) to a float number results in a complex Issue #16677 has been updated by alanwu (Alan Wu). Ah thanks for catching that. Interesting, `-2 ** 2.2` is parsed as `-(2 ** 2.2)` whereas `-2.to_i ** 2.2` is parsed as `((-2).to_i) ** 2.2`. It looks like whether it is a literal of negative two changes depending on the presence of the method call. `-2` and `-2.to_i` look so similar on paper! ---------------------------------------- Bug #16677: Negative integer powered (**) to a float number results in a complex https://bugs.ruby-lang.org/issues/16677#change-84545 * Author: CamilleDrapier (Camille Drapier) * Status: Open * Priority: Normal * ruby -v: 2.5.7, 2.6.5, 2.7.0 * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN ---------------------------------------- Not sure if this is an unexpected behavior. This works as I expect: ``` -2 ** 2.2 # => -4.59479341998814 ``` But when I change the code a bit, it gives me a complex: ```ruby -2.to_i ** 2.2 # => (3.717265962412589+2.7007518095995273i) a = -2; a ** 2.2 # => (3.717265962412589+2.7007518095995273i) ``` This seems to happen only with negative numbers and float powers. I think it might be related to how `Fixnum` is treated differently from other classes by the power function. -- https://bugs.ruby-lang.org/ Unsubscribe: