4412181e7c
A Rat is represented via a quotient a/b where a and b are Int values. To make it possible to use an uninitialized Rat value (with a and b uninitialized and thus == 0), the implementation treats a 0 denominator as 1. For each operation we check if the denominator is 0, and then treat it as 1 (if necessary). Operations that create a new Rat result, normalize that value such that a result denominator 1 is represened as 0 again. This CL changes this behavior slightly: 0 denominators are still interpreted as 1, but whenever we (safely) can, we set an uninitialized 0 denominator to 1. This simplifies the code overall. Also: Improved some doc strings. Preparation for addressing issue #33792. Updates #33792. Change-Id: I3040587c8d0dad2e840022f96ca027d8470878a0 Reviewed-on: https://go-review.googlesource.com/c/go/+/202997 Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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