Implement ldexp and use it in ratio_to_f64 #104
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This eliminates errors where we attempt a multiplication by 2^-x, but that 2^-x underflows. The `ldexp` implementation strategy is mostly to extract the exponent, modify it, then reinsert it. To avoid dealing with subnormal numbers at the bit level, we shift any subnormal numbers into normal range before that operation. This causes no loss of precision.
|
Thanks, and especially the test coverage of bors r+ |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
This eliminates errors where we attempt a multiplication by 2^-x, but that 2^-x underflows. (#91).
This is based on the code in #94.
The
ldexpimplementation strategy is mostly to extract the exponent, modify it, then reinsert it. To avoid dealing with subnormal numbers at the bit level, we shift any subnormal numbers into normal range before that operation.Fixes #91.