Define three procedures for format ~F #3
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
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Outdated suggestions cannot be applied.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.
I found that the behavior of format ~F is determined by the implementation
of 'number->string'.
If (number->string (exact->inexact 0.0003)) returns "0.0003",
(format "~1,2F" 0.0003) returns "0.00".
If (number->string (exact->inexact 0.0003)) returns "3.0e-4",
(format "~1,2F" 0.0003) returns "3.00e-4".
I think this behavior should be customizable but it seems difficult.
So, I defined three procedures near the top of code and added a comment
that explains them.
If system provides a kind of 'number->string' that can select whether
output is fixed-point notation or exponential notation, user can use it
by overwriting these procedures.
Also, I refactored some code and confirmed all tests are passed in the
following environment.
OS: Windows 8.1 (64bit)
DevTool: MSYS2/MinGW-w64 (64bit) (gcc version 7.1.0 (Rev2, Built by MSYS2 project))
Scheme: Gauche v0.9.6_pre4, Sagittarius v0.8.4, Racket v6.7