Switch PI to M_PI to support STRICT_R_HEADERS #1
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
94 tasks
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Outdated suggestions cannot be applied.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.
Dear Chen, dear HDTSA team,
The Rcpp team is trying to move towards defining STRICT_R_HEADERS by default. Please the issue ticket at RcppCore/Rcpp#1158 for motivation and history.
Your package uses (in two files) PI (instead of the standard C define M_PI, or e.g. the newer Armadillo constant arma::datum::pi) and PI goes away when we set STRICT_R_HEADERS (as a #define in a header or source file, a -DSTRICT_R_HEADERS as a compiler flag, or as a #define in the Rcpp sources as we currently do). We plan to enable STRICT_R_HEADERS by the Jan 2022 release of Rcpp, and will likely offer you a define to suppress it. So if you really do not want the change you can prevent it -- see these lines in Rcpp for details:
https://github.com/RcppCore/Rcpp/blob/e79c70e76bc2a776d2d57287f7192dbdbcb292aa/inst/include/Rcpp/r/headers.h#L28-L38
This very simple PR changes PI to M_PI in two files. Your code will then work with and without STRICT_R_HEADERS (as M_PI is an old define from C). But PI only works when STRICT_R_HEADERS is not defined, which we plan to change to.
As discussed in RcppCore/Rcpp#1158, this is not urgent, but we of course welcome relatively prompt resolution at CRAN so when we continue to test for this (at a likely montly pace) so we do not get false positives as we will continue to use the CRAN set of packages (as opposed to hand-curated set of upstream dev versions).
Many thanks for your help, and I hope you continue to find Rcpp helpful. Please don't hesitate to ask if you have any questions.