Antonio Sanchez 4cf01d2cf5 Update AVX half packets, disable test.
The AVX half implementation is incomplete, causing the `packetmath_13` test
to fail.  This disables the test.

Also refactored the existing AVX implementation to use `bit_cast`
instead of direct access to `.x`.
2020-11-21 09:05:10 -08:00
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SVD