Trevor Gross 228c716a43 Add a new precision adjustment for i586 rint ...

`rint` had a couple recent failures from the random tests:

    ---- mp_random_rint stdout ----
    Random Mpfr rint arg 1/1: 10000 iterations (10000 total) using `LIBM_SEED=Fl1f69DaJnwkHN2FeuCXaBFRvJYsPvEY`

    thread 'mp_random_rint' panicked at crates/libm-test/tests/multiprecision.rs:41:49:
    called `Result::unwrap()` on an `Err` value:
        input:    (-849751480.5001163,) (0xc1c95316dc4003d0,)
        expected: -849751481.0           0xc1c95316dc800000
        actual:   -849751480.0           0xc1c95316dc000000

    Caused by:
        ulp 8388608 > 100000

And:

    ---- mp_random_rint stdout ----
    Random Mpfr rint arg 1/1: 10000 iterations (10000 total) using `LIBM_SEED=XN7VCGhX3Wu6Mzn8COvJPITyZlGP7gN7`

    thread 'mp_random_rint' panicked at crates/libm-test/tests/multiprecision.rs:41:49:
    called `Result::unwrap()` on an `Err` value:
        input:    (-12493089.499809155,) (0xc167d4242ffe6fc5,)
        expected: -12493089.0            0xc167d42420000000
        actual:   -12493090.0            0xc167d42440000000

    Caused by:
        ulp 536870912 > 100000

It seems we just implement an incorrect rounding mode. Replace the
existing `rint` override with an xfail if the difference is 0.0 <= ε <=
1.0.

2025-01-12 03:48:13 -05:00

..

libm

Add a new precision adjustment for i586 rint

2025-01-12 03:48:13 -05:00