This repository has been archived by the owner on Nov 17, 2023. It is now read-only.
support leading dimension of -1 in ravel/unravel #14356
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description
Fixes #13862
Using "-1" for the leading shape dimension was not officially documented but happened to work in versions 1.3.1 or lower as mshadow::index_t was unsigned so -1 was eventually interpreted as maxint. In subsequent versions of mxnet, mshadow::index_t has been changed to a signed type such that using -1 as leading shape dimension did not work anymore.
This fix documents that -1 is an allowed value for the leading dimension and re-enable behaviour of version 1.3.1. Note that it is natural to assume that this use case is supported as the value of the leading dimension of the shape is not needed for ravel/unravel computations anyway. Also it seems from above issue, that there are valid customer use cases that need support for this.
Checklist
Essentials
Please feel free to remove inapplicable items for your PR.