chore: release v0.2.16

[github-actions]

🤖 New release

• libm: 0.2.15 -> 0.3.0 (⚠ API breaking changes)

⚠ libm breaking changes

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/inherent_method_missing.ron

Failed in:
  Libm::roundevem, previously in file /tmp/.tmpyDcHMR/libm/src/libm_helper.rs:114

Changelog

0.3.0 - 2026-01-24

Other

• Fix a typo in libm::Libm::roundeven
• Ignore unused_unsafe lint in libm/src/math/arch/x86/detect.rs
• Revert "cpuid is safe since the stdarch sync, so remove unsafe from usages"
• Auto merge of rust-lang/compiler-builtins#150357 - ZuseZ4:zusez4-stdarch-push, r=sayantan
• cpuid is safe since the stdarch sync, so remove unsafe from usages
• Mark float intrinsics with no preconditions as safe
• Fix some typos
• Use CARGO_CFG_*_{F16,F128} rather than invoking rustc
• Simplify the configuration for no-panic
• Implement floor and ceil in assembly on i586
• Avoid inlining floor into rem_pio2
• Update for new warn-by-default clippy lints
• Use x86_no_sse configuration in more places
• Enable tests that were skipped on PowerPC
• Allow a new lint failure in nightly
• Test building custom targets and resolve an issue probing rustc
• Use the compiler to determine whether or not to enable f16 and f128
• Improved integer utilities, implement shifts and bug fixes for i256 and u256
• Clean up and sort manifest keys
• Fix incorrect result and add tests
• Fix unintentional skips in binop_common
• Use x.biteq(y) rather than x.to_bits() == y.to_bits()
• Fix new dead_code warnings from recent nightlies
• Reuse libm's Caat and CastFrom in compiler-builtins
• Reuse MinInt and Int from libm in compiler-builtins
• Add a note saying why we use frintx rather than frintn
• Typo in README.md
• Update CmpResult to use a pointer-sized return type
• Clean up unused files
• Fix i256::MAX

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This PR was generated with release-plz.

[rustbot]

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

[quaternic]

Suggested change

	- Significantly optimize `fmod` (13x speedup for f64! [#1002](https://github.com/rust-lang/compiler-builtins/pull/1002))
	- Significantly optimize `fmod` worst case performance ([#1002](https://github.com/rust-lang/compiler-builtins/pull/1002))

I wouldn't oversell it, since typical inputs won't see much benefit.

[tgross35]

Applied via push