This also allows reusing the same generator logic between logspace tests
and extensive tests, so comes with a nice bit of cleanup.
Changes:
* Make the generator part of `CheckCtx` since a `Generator` and
`CheckCtx` are almost always passed together.
* Rename `domain_logspace` to `spaced` since this no longer only
operates within a domain and we may want to handle integer spacing.
* Domain is now calculated at runtime rather than using traits, which is
much easier to work with.
* With the above, domains for multidimensional functions are added.
* The extensive test generator code tests has been combined with the
domain_logspace generator code. With this, the domain tests have just
become a subset of extensive tests. These were renamed to "quickspace"
since, technically, the extensive tests are also "domain" or "domain
logspace" tests.
* Edge case generators now handle functions with multiple inputs.
* The test runners can be significantly cleaned up and deduplicated.
Currently the features that control what we test against are
`build-musl` and `test-multiprecision`. I didn't name them very
consistently and there isn't really any reason for that.
Rename `test-multiprecision` to `build-mpfr` to better reflect what it
actually does and to be more consistent with `build-musl`.
Update test traits to support `f16` and `f128`, as applicable. Add the
new routines (`fabs` and `copysign` for `f16` and `f128`) to the list of
all operations.
Currently, all inputs are generated and then cached. This works
reasonably well but it isn't very configurable or extensible (adding
`f16` and `f128` is awkward).
Replace this with a trait for generating random sequences of tuples.
This also removes possible storage limitations of caching all inputs.
Once we start addinf `f16` and `f128` routines, we will need to have
this cfg for almost all uses of `for_each_function`. Rather than needing
to specify this each time, always emit `#[cfg(f16_enabled)]` or
`#[cfg(f128_enabled)]` for each function that uses `f16` or `f128`,
respectively.
Now that we are using rustdoc output to locate public functions, the
test is indicating a few that were missed since they don't have their
own function. Update everything to now include the following routines:
* `erfc`
* `erfcf`
* `y0`
* `y0f`
* `y1`
* `y1f`
* `yn`
* `ynf`
Currently there is a combination of names starting with
`multiprecision_`, `mp_` and `multiprec_`. Update so `multiprecision_`
is always used when a long form makes sense, `mp_` otherwise
(eliminating `multiprec_`).
