Add erfcx function - #3405

Merged

andrjohns merged 28 commits into

Sep 20, 2026

Commits on Sep 15, 2026

Add erfcx scaled complementary error function
avehtari
committed
056dd03

Commits on Sep 16, 2026

Flatten erfcx Horner evaluation to satisfy cpplint line length
avehtari
committed
e0707b1
Use fma instead of Dekker split in OpenCL erfcx device function
avehtari
committed
266fb5c
Use fma instead of Dekker split in erfcx lower branch
avehtari
committed
8c16f29

Commits on Sep 17, 2026

Use Cody second-interval rational for erfcx on 0.46875 <= x < 4
avehtari
committed
ea151be
Replace erfcx erfc call below 0.46875 with a Chebyshev expansion and reflection
avehtari
committed
f55de06
Mirror the new erfcx branches in the OpenCL device function and tests
avehtari
committed
7dfed73
Merge commit '5252d51d47c1d5e78005fc043ad996fad6dd8da8' into HEAD
yashikno
committed
bf74584
[Jenkins] auto-formatting by clang-format version 10.0.0-4ubuntu1
stan-buildbot
committed
37d8262
Add reverse-mode OpenCL support for erfcx
avehtari
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6ff4541
Add OpenCL tests for erfcx
avehtari
committed
6630449

Commits on Sep 18, 2026

Commits on Sep 19, 2026

Apply the 2026-09-19 review; keep the cheap derivative and share the tail polynomials
avehtari
committed
3612a0b