GH-100485: Add extended accuracy test. Switch to faster fma() based variant.

[rhettinger]

• Issue: Consider adding sumproduct() or dotproduct() to the math module #100485

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @rhettinger for commit 43a7ba9 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @rhettinger for commit 43a7ba9 🤖

If you want to schedule another build, you need to add the :hammer: test-with-refleak-buildbots label again.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @rhettinger for commit 1e97b8a 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @rhettinger for commit 1e97b8a 🤖

If you want to schedule another build, you need to add the :hammer: test-with-refleak-buildbots label again.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @rhettinger for commit 5355c47 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @rhettinger for commit 5355c47 🤖

If you want to schedule another build, you need to add the :hammer: test-with-refleak-buildbots label again.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @rhettinger for commit 5355c47 🤖

If you want to schedule another build, you need to add the :hammer: test-with-refleak-buildbots label again.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @rhettinger for commit 5355c47 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.