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93bd042349
Fast math is not required, but it speeds up some calculations at the expense of accuracy. There are some functions like dtMathIsfinite that use floating point functions that become undefined behavior when compiled with fast-math, so we need to conditionally short-circuit these functions when compiled with that flag. -Wnan-infinity-disabled is complaining about the isfinite call in dtMathIsfinite. This also sets the linux runner explicitly to Ubuntu 24.04, since ubuntu-latest defaults to 22.04 for some reason. This also updates gcc and clang to the latest versions in apt and logs their version to the run output. We need at least clang18 to disable the -Wnan-infinity-disabled warning for Catch. Finally, this also removes some unused code that was throwing a warning (and thus an error) on newer compiler versions.