Lewis Gaul 387b0ac4f1
Make NaNs quiet by default and other NaN tidy-up (#16826)
* Generalise NaN handling and make std.math.nan() give quiet NaNs

* Address uses of std.math.qnan_* and std.math.nan_* consts

* Comment out failing test due to issues with signalling NaN

* Fix issue in c_builtins.zig where we need qnan_u32
2023-08-18 02:07:49 -04:00
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