Deduplicated float tests and unified in floats/mod.rs

[xonx4l]

In this PR Float tests are deduplicated and are unified in floats/mod.rs ,as discussed in #141726.

The moved float tests are-:

-> test_powf
-> test_exp
-> test_exp2
-> test_ln
-> test_log_generic
-> test_log2
-> test_log10
-> test_asinh
-> test_acosh
-> test_atanh
-> test_gamma
-> test_ln_gamma

r? tgross35

[rustbot]

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[xonx4l]

Any update @bjorn3 ?

[bjorn3]

CI is still failing.

[xonx4l]

CI is still failing.

ok let me fix .

[rustbot]

Some changes occurred in compiler/rustc_codegen_cranelift

cc @bjorn3

[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.

[LorrensP-2158466]

This test here for f128 will fail because the precision is much higher, if you look at the original test, the expected value is much more precise than what you have written:

assert_approx_eq!(2.3f128.log(3.5), 0.66485771361478710036766645911922010272, TOL);

When testing higher precision floats, you need much more precise expected values or the tests will fail, as they do now. In Miri, this is even more strict.

If you look at the source of f16 constants, they use much more digits after the decimal point than needed:

pub const PI: f16 = 3.14159265358979323846264338327950288_f16;

So you should probably do that as well.

[xonx4l]

Okay it makes sense . Thanks

[tgross35]

Thank you for the final cleanup here. Until CI is fixed,
@rustbot author

[rustbot]

Reminder, once the PR becomes ready for a review, use @rustbot ready.

[xonx4l]

Thank you for the final cleanup here. Until CI is fixed, @rustbot author

Will finish this as soon as possible . A bit busy these days.

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