On Wed, 23 Oct 2024, LIU Hao wrote:
在 2024-10-23 04:58, Martin Storsjö 写道:
Did you verify this aspect with all these libraries (testing setting
rounding and calling our math functions?), or is this just repeating the
same statement that was tested with UCRT?
Technically I think the patch is fine, but I'm a little weary about adding
statements saying something about how things behave with a library unless
we actually did test that.
Strictly speaking, it's only true for x86-64. Microsoft declare x87 FPU
deprecated on x86-64 and there's no type for 10-byte extended-precision type
in their ABI, so MSVCR120* DLL only check and update MXCSR.
For x86-32, MXCSR is passively updated from the x87 FPU control word.
Thanks, this sounds reasonable. So for old x86 32 bit, this argument isn't
relevant, and it could be concievable that these functions should work
together with our implementations in libmingwex?
// Martin
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