Conversation
MSVC's <cmath> does not define M_PI unless _USE_MATH_DEFINES is set before the include, so the Windows wheel compile failed with "'M_PI': undeclared identifier" (and the dependent LN_SQRT_2PI const init error). arma::datum::pi is the same IEEE double, portable, and already the idiom used elsewhere in the engine (PTSmodel.h). Parity is bit-for-bit unchanged: 21/21 specs still match R (worst 3.48e-9); R side recompiles and runs. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
config-i1
added a commit
that referenced
this pull request
Jul 23, 2026
Fix MSVC build: use arma::datum::pi instead of M_PI in bcnorm.h
This file contains hidden or 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
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
MSVC's does not define M_PI unless _USE_MATH_DEFINES is set before the include, so the Windows wheel compile failed with "'M_PI': undeclared identifier" (and the dependent LN_SQRT_2PI const init error). arma::datum::pi is the same IEEE double, portable, and already the idiom used elsewhere in the engine (PTSmodel.h).
Parity is bit-for-bit unchanged: 21/21 specs still match R (worst 3.48e-9); R side recompiles and runs.