1b-agent/OneCAD-Simulation
1
0 Fork 0
forked from 1b-agent/fieldcraft-upstream
Code Pull Requests Activity

mesh: platform-independent maths (libm) so meshes are bit-identical on macOS and Linux

Browse Source 
The system maths library's sin, cos, atan2, log … are not correctly rounded and differ
between platforms: mesh.hex.generate gave the plate of the strong-relax test a different
mesh on Linux than on macOS (nodes from 2809 on), so the test passed on a Mac and failed
in CI. Every transcendental call in fieldcraft-mesh now goes through the libm crate (a
pure-Rust port of musl's), which gives the same bits everywhere.

Part of #438.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo
This commit is contained in:
jyvikoandClaude Opus 5.5 authored and Irakli Kourtis committed 2026-10-16 18:30:00 -04:00
1 parent f297ffca3a
commit 700a7e3d10
15 files changed
+41 -30
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

crates/mesh/src/surface/topology.rs
+1 -1
View File
@@ -236,7 +236,7 @@ fn solid_angle(s: &Surface, t: usize, x: [f64; 3]) -> f64 {
let [a, b, c] = s.tri_xyz(t).map(|p| sub(p, x));
let (la, lb, lc) = (norm(a), norm(b), norm(c));
let den = la * lb * lc + dot(a, b) * lc + dot(a, c) * lb + dot(b, c) * la;
2.0 * det(a, b, c).atan2(den)
2.0 * crate::vec3::atan2(det(a, b, c), den)
}
/// Edges between different B-rep faces, and edges inside a face whose normals turn by more than