Antonio Sanchez e2f21465fe Special function implementations for half/bfloat16 packets.
Current implementations fail to consider half-float packets, only
half-float scalars.  Added specializations for packets on AVX, AVX512 and
NEON.  Added tests to `special_packetmath`.

The current `special_functions` tests would fail for half and bfloat16 due to
lack of precision. The NEON tests also fail with precision issues and
due to different handling of `sqrt(inf)`, so special functions bessel, ndtri
have been disabled.

Tested with AVX, AVX512.
2020-12-04 10:16:29 -08:00
..
2019-09-16 19:33:29 -04:00
2019-09-16 19:33:29 -04:00
2010-02-16 21:41:04 -05:00