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Josef Ippisch 50cf00372d MMX subtraction instructions (#280)
* Implement `_m_psubb`

* Implement `_m_psubw`

* Implement `_m_psubd`

* Implement `_m_psubsb`

* Implement `_m_psubsw`

* Implement `_m_psubusb`

* Implement `_m_psubusw`

* Have the subtraction intrinsic naming consistent with the addition ones

E.g. use `_mm_sub_pi8` instead of `_m_psubb`

* Implement all subtraction aliases for the `_mm_*` variants

- `_m_psubb` for `_mm_sub_pi8`
- `_m_psubw` for `_mm_sub_pi16`
- `_m_psubd` for `_mm_sub_pi32`
- `_m_psubsb` for `_mm_subs_pi8`
- `_m_psubsw` for `_mm_subs_pi16`
- `_m_psubusb` for `_mm_subs_pu8`
- `_m_psubusw` for `_mm_subs_pu16`
2018-01-12 17:10:51 -06:00
library/stdarch MMX subtraction instructions (#280) 2018-01-12 17:10:51 -06:00